CN117028223A - Optimal line type determining method for ten-thousand-ton-level loading ship - Google Patents
Optimal line type determining method for ten-thousand-ton-level loading ship Download PDFInfo
- Publication number
- CN117028223A CN117028223A CN202311110026.7A CN202311110026A CN117028223A CN 117028223 A CN117028223 A CN 117028223A CN 202311110026 A CN202311110026 A CN 202311110026A CN 117028223 A CN117028223 A CN 117028223A
- Authority
- CN
- China
- Prior art keywords
- ship
- model
- optimal
- thousand
- ton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 230000005484 gravity Effects 0.000 claims abstract description 12
- 238000004364 calculation method Methods 0.000 claims description 25
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims description 20
- 238000002474 experimental method Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 239000005431 greenhouse gas Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Data Mining & Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Computer Hardware Design (AREA)
- Computational Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- Algebra (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application discloses an optimal line type determining method of a ten-thousand-ton loading ship, which comprises the following steps: modeling the linear shape of the ship body through modeling software, and simulating corresponding ship body performance parameters under various linear states by using the software to obtain an optimal theoretical model; carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structural weight of the ship; calculating the complete stability and the damage stability according to the full ship model, and determining the gravity center position of the ship; and performing a propeller water flowing test to obtain propeller parameters. The application achieves the effects of reducing the weight of the ship, reducing the water flow resistance, reducing the power required by a host machine, improving the propulsion efficiency, and reducing the fuel consumption and the greenhouse gas emission by designing the conversion from the optimal theoretical model to the real ship.
Description
Technical Field
The application relates to the technical field of ship construction, in particular to an optimal line type determining method of a ten-thousand-ton loading ship.
Background
In ship operation, fuel consumption and the exhaust emission requirement of IMO are a great factor in determining operation cost. The emission requirements of IMO on ship greenhouse gases are becoming more stringent, and international shipping industry accounts for about 2% of global carbon dioxide emissions, which is the main greenhouse gas responsible for global warming, and in the great background of efforts to achieve climate goals in all major countries around the world, no good zero-carbon ship solution exists at present. Therefore, on the basis of the original ship, a novel ship body linear design scheme is provided as much as possible to reduce the weight of the ship body and the water flow resistance so as to achieve the effects of reducing the fuel consumption and the emission of greenhouse gases.
Disclosure of Invention
The application aims to provide an optimal line type determining method for a ten-thousand-ton-level loading ship, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions: an optimal line type determining method for a ten thousand-ton-level load carrier comprises the following steps:
modeling the linear shape of the ship body through modeling software, and simulating corresponding ship body performance parameters under various linear states by using the software to obtain an optimal theoretical model;
carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structural weight of the ship;
calculating the complete stability and the damage stability according to the full ship model, and determining the gravity center position of the ship;
performing a propeller water flowing test to obtain propeller parameters;
carrying out a ship model pool test to verify the structural resistance of the ship body under various loading working conditions;
and weighing and pilot-sailing the real ship and the empty ship to determine the implementation of the optimal theoretical model.
Preferably, the modeling of the hull line by using professional software such as NAPA, and simulating corresponding hull performance parameters under various line states by using software to obtain an optimal theoretical model includes:
firstly, gradually adding each station horizontal section line and each height waterline on a Text editor platform of NAPA software according to ship type data provided in a profile diagram from the establishment of boundary curves comprising deck side lines, stem lines, flat side lines and flat bottom lines, and assisting other auxiliary control lines to ensure the closing and fairing of a ship model, thus obtaining the ship geometric model;
then, in a NAPA STEEL module, each deck platform plate, a side board, a cabin wall board and the like are obtained by a method of limiting the curved surface boundary of the ship body, in a corresponding table, the plate seams and the attributes of the plates are respectively given in a parameter definition mode, and various reinforcing ribs, holes, toggle plates and other components are added on the plates;
after the full-ship structural model is built, the model can be divided in sections by referring to drawings, then the model is imported into a TRIBON for simulation, whether the model is a theoretical optimal model is confirmed, if not, the model is returned to NAPA and NAPA STEEL for redefining the parameters of the ship model until the optimal theoretical model is obtained.
Preferably, the modeling of the structure according to the obtained optimal theoretical model and finite element analysis of the structure are performed, and the structure is selected according to the optimal structural specification to reduce the structural weight of the ship, including:
after the optimal theoretical model is obtained, the optimal theoretical model is subjected to grid division through NAPA STEEL, finite element calculation software is imported through an interface, the divided segmented ship models are subjected to analysis calculation one by one or are subjected to simple modification treatment to be subjected to analysis calculation, the structural specification of the ship models is optimized, and the structural weight of the ship is reduced.
Preferably, the calculating the complete stability and the damage stability according to the model of the whole ship and determining the gravity center position of the ship comprises the following steps:
establishing a ship body coordinate system according to the full ship model, and acquiring the gravity center position of the ship; in the complete stability calculation, only vertical force is appliedDraft all 、 Inclination angle->And pitch angle->Three floating state parameters are represented, euler angle parameters are defined through coordinate system transformation, a coordinate transformation matrix represented by Euler angles is established, the coordinates of a natural coordinate system are transformed into a ship body coordinate system, ship stability calculation is conducted, and a floating center position is obtained;
and then, based on the complete stability calculation, carrying out the damage stability calculation by adopting a successive linearization method based on a loss buoyancy method.
Preferably, in the propeller water flowing test, MATLAB is firstly used for converting two-dimensional coordinates of the propeller, UG is then used for three-dimensional modeling, ICEM is then used for dividing a regional mixing grid, fluent is finally introduced for calculating water opening performance, a water opening characteristic curve is given, and a ship model open water test is performed.
Preferably, in the ship model pool test, the whole ship model entity is built according to the proportion, then the whole ship model entity is dragged in the pool by a test pool trailer to walk at a preset speed, and the water flow resistance of each structure of the whole ship model entity is measured by a resistance dynamometer.
The application also provides an optimal line type determining device of the ten-thousand-ton-level loading ship, which comprises the following components:
the data modeling module is used for carrying out linear modeling on the ship body through modeling software and simulating corresponding ship body performance parameters under various linear states by using the software so as to obtain an optimal theoretical model;
the data analysis module is used for carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structure weight of the ship;
the data calculation module is used for calculating the complete stability and the damage stability according to the whole ship model and determining the gravity center position of the ship;
the hull experiment module is used for performing a propeller water flowing experiment to obtain propeller parameters;
the hull experiment module is also used for carrying out a ship model pool experiment and verifying the structural resistance of the hull under various loading working conditions.
The application also provides an optimal line type determining device of the ten-thousand-ton-level loading ship, wherein the optimal line type determining device of the ten-thousand-ton-level loading ship is entity equipment, and the optimal line type determining device of the ten-thousand-ton-level loading ship comprises:
the device comprises a processor and a memory, wherein the memory is in communication connection with the processor; the memory is used for storing executable instructions executed by at least one processor, and the processor is used for executing the executable instructions to realize the optimal line type determining method of the ten-thousand-ton-level carrier.
The present application also provides a computer readable storage medium having stored therein a computer program which when executed by a processor implements the method for determining an optimal line profile for a ten thousand ton carrier vessel as described above.
Compared with the prior art, the application has the beneficial effects that:
the method comprises the steps of continuously optimizing a hull linear diagram to perform optimal theoretical modeling of a full-ship model, performing finite element analysis on the structure of the full-ship model after modeling, selecting according to optimal structural specifications to reduce the structural weight of a ship, performing complete stability and damage stability calculation on the full-ship model, performing a propeller water flowing test and a ship model pool test on the full-ship model, and performing pilot navigation by a real ship to determine the implementation of the optimal theoretical model, thereby achieving the effects of reducing the weight of the ship, reducing water flow resistance, reducing the power required by a host machine, improving propulsion efficiency, and reducing fuel consumption and greenhouse gas emission.
Drawings
FIG. 1 is a main flow chart of an optimal line type determining method for a ten thousand ton carrier provided by an embodiment of the present application;
FIG. 2 is a view of a cross section of a bow portion during NAPA modeling of an optimal line type determination method for a ten thousand ton carrier provided by an embodiment of the present application;
FIG. 3 is a stern cross section line shape of a ten thousand ton carrier in NAPA modeling of an optimal line shape determination method according to an embodiment of the present application;
FIG. 4 is a view of a fore water plane line graph during NAPA modeling of an optimal line type determination method for a ten thousand-ton carrier provided by an embodiment of the present application;
FIG. 5 is a view of a stern water plane line graph during NAPA modeling of an optimal line type determination method for a ten thousand ton carrier provided by an embodiment of the present application;
FIG. 6 is a longitudinal cross-sectional line view of a bow portion during NAPA modeling of an optimal line type determination method for a ten thousand ton carrier provided by an embodiment of the present application;
fig. 7 is a longitudinal sectional line view of a stern portion of a ten thousand-ton-scale load carrier according to an embodiment of the present application, when the NAPA modeling is performed.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The main execution body of the method in this embodiment is a terminal, and the terminal may be a device such as a mobile phone, a tablet computer, a PDA, a notebook or a desktop, but of course, may be another device with a similar function, and this embodiment is not limited thereto.
Referring to fig. 1 to 7, the present application provides a method for determining an optimal line type of a ten thousand ton-level load carrier, which is applied to determining an optimal line type of a 82500 ton-level load carrier, comprising:
and 101, performing linear modeling on the ship body through modeling software, and simulating corresponding ship body performance parameters under various linear states by using the software to obtain an optimal theoretical model.
Specifically, as shown in fig. 2 to 7, the step 101 further includes:
step 1011, firstly, on a Text editor platform of NAPA software, starting from establishing a boundary curve comprising a deck side line, a stem line, a flat side line and a flat bottom line according to ship type data provided in a model diagram, gradually adding each station horizontal line and each height waterline, and assisting other auxiliary control lines to ensure the closing and the fairing of a ship model, thus obtaining a ship geometric model;
step 1012, then, in a NAPA STEEL module, obtaining a deck platform plate, a side board, a cabin wall board and the like by a method of limiting a curved surface boundary of a ship body, respectively endowing the board with board seams and attributes in a parameter definition form in a corresponding table, and adding various reinforcing ribs, open pores, toggle plates and other components on the board;
step 1013, after the full-ship structural model is built, the model can be divided in sections by referring to the drawing, then the model is imported into a TRIBON for simulation, whether the model is a theoretical optimal model is confirmed, if not, the model is returned to NAPA and NAPA STEEL for redefining the parameters of the ship model until the optimal theoretical model is obtained.
And 102, carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structural weight of the ship.
Specifically, after the optimal theoretical model is obtained, grid division is carried out on the optimal theoretical model through NAPA STEEL, finite element calculation software is led in through an interface, analysis calculation is carried out on the divided segmented ship models one by one or analysis calculation is carried out through simple modification treatment, the structural specification of the ship model is optimized, the structural weight of the ship is reduced, and the optimal theoretical model is determined to meet the requirement of HSCR on the structural strength of the ship.
And 103, calculating the integrity stability and the damage stability according to the whole ship model, and determining the gravity center position of the ship.
In particular, according toThe whole-ship model establishes a ship body coordinate system and acquires the gravity center position of the ship; in the complete stability calculation, only vertical force is applied, and average draft is used 、 Inclination angle->And pitch angle->Three floating state parameters are represented, euler angle parameters are defined through coordinate system transformation, a coordinate transformation matrix represented by Euler angles is established, the coordinates of a natural coordinate system are transformed into a ship body coordinate system, ship stability calculation is conducted, and a floating center position is obtained;
based on the complete stability calculation, the loss buoyancy method is adopted to calculate the stability and damage stability calculation by adopting a successive linearization method, and the parameters are mutually independent, so that the buoyancy of the damaged ship only needs the parameters、/>And->To determine.
Step 104, performing a propeller water flowing test to obtain the propeller parameters such as the optimal propeller pitch and the propeller diameter matched with the new line type of the application, and better matching the line type performance of the ship.
Specifically, MATLAB is firstly used for converting two-dimensional coordinates of a propeller, UG is then used for three-dimensional modeling, ICEM is then used for partition mixing grid division, fluent is finally introduced for open water performance calculation, an open water characteristic curve is given, and a ship model open water test is performed.
And 105, performing a ship model pool test, verifying the structural resistance of the ship body under various loading working conditions, and improving the boosting effect of the propulsion efficiency.
Specifically, the whole-ship model entity is built according to the proportion, then the whole-ship model entity is dragged in a pool by a test pool trailer to walk at a preset speed, and the water flow resistance of each structure of the whole-ship model entity is measured by a resistance dynamometer.
And 106, weighing and pilot-sailing the real ship and the empty ship to determine the implementation of the optimal theoretical model.
In the embodiment, the ship body linear diagram is optimized to perform optimal theoretical modeling of the whole ship model, finite element analysis is performed on the structure of the whole ship model after modeling, the structure weight of the ship is reduced by selecting the optimal structure specification, then the whole ship model is subjected to complete stability and damage stability calculation, a propeller water flowing test and a ship model pool test are performed on the basis, and finally the implementation of the optimal theoretical model is determined by actual ship pilot voyage, so that the effects of reducing the weight of the ship, reducing the water flow resistance, reducing the power required by a host machine, improving the propulsion efficiency and reducing the fuel consumption and the greenhouse gas emission are achieved.
On the basis of the above embodiment, the present application also provides an optimal line type determining apparatus for a ten thousand-ton-level load carrier, for supporting the optimal line type determining method for a ten thousand-ton-level load carrier of the above embodiment, the optimal line type determining apparatus for a ten thousand-ton-level load carrier comprising:
the data modeling module is used for carrying out linear modeling on the ship body through modeling software and simulating corresponding ship body performance parameters under various linear states by using the software so as to obtain an optimal theoretical model;
the data analysis module is used for carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structure weight of the ship;
the data calculation module is used for calculating the complete stability and the damage stability according to the whole ship model and determining the gravity center position of the ship;
the hull experiment module is used for performing a propeller water flowing experiment to obtain propeller parameters;
the hull experiment module is also used for carrying out a ship model pool experiment and verifying the structural resistance of the hull under various loading working conditions.
Furthermore, the optimal line type determining device of the ten-thousand-ton-level carrier can operate the optimal line type determining method of the ten-thousand-ton-level carrier, and specific implementation can be referred to a method embodiment and will not be described herein.
On the basis of the above embodiment, the present application also provides an optimum line type determining apparatus for a ten thousand-ton-level load carrier, the optimum line type determining apparatus for a ten thousand-ton-level load carrier including:
the device comprises a processor and a memory, wherein the processor is in communication connection with the memory;
in this embodiment, the memory may be implemented in any suitable manner, for example: the memory can be read-only memory, mechanical hard disk, solid state disk, USB flash disk or the like; the memory is used for storing executable instructions executed by at least one of the processors;
in this embodiment, the processor may be implemented in any suitable manner, e.g., the processor may take the form of, for example, a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an application specific integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), a programmable logic controller, and an embedded microcontroller, etc.; the processor is configured to execute the executable instructions to implement the method of determining an optimal line type for a ten thousand ton class load vessel as described above.
On the basis of the above-mentioned embodiments, the present application also provides a computer-readable storage medium in which a computer program is stored, which when being executed by a processor, implements the method for determining an optimal line type for a ten thousand ton-level load carrier as described above.
Those of ordinary skill in the art will appreciate that the modules and method steps of the examples described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus, device and module described above may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or units may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or apparatuses, which may be in electrical, mechanical or other form.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a read-only memory server, a random access memory server, a magnetic disk or an optical disk, or other various media capable of storing program instructions.
In addition, it should be noted that the combination of the technical features described in the present application is not limited to the combination described in the claims or the combination described in the specific embodiments, and all the technical features described in the present application may be freely combined or combined in any manner unless contradiction occurs between them.
It should be noted that the above-mentioned embodiments are merely examples of the present application, and it is obvious that the present application is not limited to the above-mentioned embodiments, and many similar variations are possible. All modifications attainable or obvious from the present disclosure set forth herein should be deemed to be within the scope of the present disclosure.
The foregoing is merely illustrative of the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. The method for determining the optimal line type of the ten-thousand-ton loading ship is characterized by comprising the following steps of:
modeling the linear shape of the ship body through modeling software, and simulating corresponding ship body performance parameters under various linear states by using the software to obtain an optimal theoretical model;
carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structural weight of the ship;
calculating the complete stability and the damage stability according to the full ship model, and determining the gravity center position of the ship;
performing a propeller water flowing test to obtain propeller parameters;
carrying out a ship model pool test to verify the structural resistance of the ship body under various loading working conditions;
and weighing and pilot-sailing the real ship and the empty ship to determine the implementation of the optimal theoretical model.
2. The method for determining the optimal line type of the ten-thousand-ton-level cargo ship according to claim 1, wherein the modeling of the line type of the ship body is performed by professional software such as NAPA, and the corresponding performance parameters of the ship body under various line types are simulated by software to obtain an optimal theoretical model, and the method comprises the following steps:
firstly, gradually adding each station horizontal section line and each height waterline on a Text editor platform of NAPA software according to ship type data provided in a profile diagram from the establishment of boundary curves comprising deck side lines, stem lines, flat side lines and flat bottom lines, and assisting other auxiliary control lines to ensure the closing and fairing of a ship model, thus obtaining the ship geometric model;
then, in a NAPA STEEL module, each deck platform plate, a side board, a cabin wall board and the like are obtained by a method of limiting the curved surface boundary of the ship body, in a corresponding table, the plate seams and the attributes of the plates are respectively given in a parameter definition mode, and various reinforcing ribs, holes, toggle plates and other components are added on the plates;
after the full-ship structural model is built, the model can be divided in sections by referring to drawings, then the model is imported into a TRIBON for simulation, whether the model is a theoretical optimal model is confirmed, if not, the model is returned to NAPA and NAPA STEEL for redefining the parameters of the ship model until the optimal theoretical model is obtained.
3. The method for determining the optimal line type of a ten thousand-ton carrier according to claim 1, wherein the modeling of the structure according to the obtained optimal theoretical model and the finite element analysis of the structure are performed, and the selection is performed according to the optimal structural specification to reduce the structural weight of the ship, comprising:
after the optimal theoretical model is obtained, the optimal theoretical model is subjected to grid division through NAPA STEEL, finite element calculation software is imported through an interface, the divided segmented ship models are subjected to analysis calculation one by one or are subjected to simple modification treatment to be subjected to analysis calculation, the structural specification of the ship models is optimized, and the structural weight of the ship is reduced.
4. The method for determining the optimal line type of a ten thousand-ton carrier according to claim 1, wherein the calculating of the integrity stability and the damage stability according to the model of the whole ship and determining the center of gravity of the ship comprises:
establishing a ship body coordinate system according to the full ship model, and acquiring the gravity center position of the ship;
in the complete stability calculation, only vertical force is applied, and average draft is usedInclination angle->And pitch angle->Three floating state parameters are represented, euler angle parameters are defined through coordinate system transformation, a coordinate transformation matrix represented by Euler angles is established, the coordinates of a natural coordinate system are transformed into a ship body coordinate system, ship stability calculation is conducted, and a floating center position is obtained;
and then, based on the complete stability calculation, carrying out the damage stability calculation by adopting a successive linearization method based on a loss buoyancy method.
5. The optimal line type determining method for the ten-thousand-ton-level cargo ship according to claim 1, wherein in the propeller water flowing test, firstly, MATLAB is used for converting two-dimensional coordinates of a propeller, then UG is used for three-dimensional modeling, then ICEM is used for partition mixing grid division, and finally Fluent is introduced for calculation of water opening performance, a water opening characteristic curve is given, and a ship model open water test is performed.
6. The method for determining the optimal line type of the ten-thousand-ton-level cargo ship according to claim 1, wherein in the ship model pool test, the whole ship model entity is built according to the proportion, then the whole ship model entity is dragged in the pool by a test pool trailer to walk at a preset speed, and the water flow resistance of each structure of the whole ship model entity is measured by a resistance force measuring instrument.
7. An optimum line type determining apparatus for a ten thousand-ton-level load carrier, comprising:
the data modeling module is used for carrying out linear modeling on the ship body through modeling software and simulating corresponding ship body performance parameters under various linear states by using the software so as to obtain an optimal theoretical model;
the data analysis module is used for carrying out full-ship structure modeling according to the obtained optimal theoretical model to obtain a full-ship model, carrying out finite element analysis on the structure of the full-ship model, and selecting according to the optimal structure specification to reduce the structure weight of the ship;
the data calculation module is used for calculating the complete stability and the damage stability according to the whole ship model and determining the gravity center position of the ship;
the hull experiment module is used for performing a propeller water flowing experiment to obtain propeller parameters;
the hull experiment module is also used for carrying out a ship model pool experiment and verifying the structural resistance of the hull under various loading working conditions.
8. An optimal line type determining apparatus for a ten thousand-ton-level load carrier, characterized in that the optimal line type determining apparatus for a ten thousand-ton-level load carrier comprises:
the device comprises a processor and a memory, wherein the memory is in communication connection with the processor;
the memory is configured to store executable instructions that are executed by at least one of the processors, the processor configured to execute the executable instructions to implement the method of determining an optimal line profile for a ten thousand ton carrier vessel as claimed in any one of claims 1 to 6.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein a computer program which, when executed by a processor, implements the method of determining an optimal line type of a ten-thousand-ton-level load carrier as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311110026.7A CN117028223A (en) | 2023-08-31 | 2023-08-31 | Optimal line type determining method for ten-thousand-ton-level loading ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311110026.7A CN117028223A (en) | 2023-08-31 | 2023-08-31 | Optimal line type determining method for ten-thousand-ton-level loading ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117028223A true CN117028223A (en) | 2023-11-10 |
Family
ID=88628223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311110026.7A Pending CN117028223A (en) | 2023-08-31 | 2023-08-31 | Optimal line type determining method for ten-thousand-ton-level loading ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117028223A (en) |
-
2023
- 2023-08-31 CN CN202311110026.7A patent/CN117028223A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tahara et al. | CFD‐based multi‐objective optimization method for ship design | |
| Bertram | Practical ship hydrodynamics | |
| Fu et al. | An assessment of computational fluid dynamics predictions of the hydrodynamics of high-speed planing craft in calm water and waves | |
| CN103617333B (en) | Ocean platform floating holder installation shock analog analysing method | |
| KR101227953B1 (en) | Method and apparatus for hull design | |
| CN105205261A (en) | Autonomous underwater vehicle appearance optimization method | |
| Ang et al. | Hull form design optimisation for improved efficiency and hydrodynamic performance of ‘ship-shaped’offshore vessels | |
| Sun et al. | A practical method for stability assessment of a damaged ship | |
| Guan et al. | Automatic optimal design of self-righting deck of USV based on combined optimization strategy | |
| Jafaryeganeh et al. | Multi-objective optimization of internal compartment layout of oil tankers | |
| Kim et al. | Hydrodynamic optimization of twin-skeg LNG ships by CFD and model testing | |
| CN117028223A (en) | Optimal line type determining method for ten-thousand-ton-level loading ship | |
| Senjanović et al. | Launching of ships from horizontal berth by tipping tables–CFD simulation of wave generation | |
| CN108528628B (en) | A kind of surveying vessel | |
| KR102146910B1 (en) | Shape optimization apparatus and method for water breaker of container ship | |
| Majidian et al. | Numerical simulation of container ship in oblique winds to develop a wind resistance model based on statistical data | |
| Kandasamy et al. | CFD based hydrodynamic optimization and structural analysis of the hybrid ship hull | |
| Calabrese et al. | A method for evaluating the ship equilibrium point using 3D meshes developed for embedded device | |
| Peric et al. | Trends in industry applications of computational fluid dynamics for maritime flows | |
| Tong et al. | An alternative method for computing hydrostatic performances of a floating body with arbitrary geometrical configurations | |
| Mahmoodi et al. | A CFD investigation of the propulsion performance of a low-speed VLCC tanker at different initial trim angles | |
| Sheingart | Hydrodynamics of high speed planing hulls with partially ventilated bottom and hydrofoils | |
| CN113268938B (en) | Bionic fluctuation fin water surface stability analysis method, system, equipment and readable storage medium | |
| Caldas et al. | Ship survivability study using high fidelity CFD | |
| Coelho et al. | Equilibrium, ballast control and free-surface effect computations using the sstab system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |