CN110816773A - Method for calculating rudder effect of marine rudder with flow control plate - Google Patents
Method for calculating rudder effect of marine rudder with flow control plate Download PDFInfo
- Publication number
- CN110816773A CN110816773A CN201911106343.5A CN201911106343A CN110816773A CN 110816773 A CN110816773 A CN 110816773A CN 201911106343 A CN201911106343 A CN 201911106343A CN 110816773 A CN110816773 A CN 110816773A
- Authority
- CN
- China
- Prior art keywords
- rudder
- flow control
- flow
- control plate
- effect
- 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
- 230000000694 effects Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004364 calculation method Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000013461 design Methods 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000002372 labelling Methods 0.000 claims 1
- 238000012938 design process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001970 hydrokinetic effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
A method for calculating the rudder effect of a rudder with a flow control plate for a ship. According to the invention, by decomposing the complex model, based on the existing test result and a means of properly processing the boundary conditions, the rudder effect of the rudder with the flow control plate is calculated more conveniently, and a convenient and flexible calculation method is provided for calculating the rudder effect in the initial stage of design. The method is divided into five steps, wherein the step 1 is to establish a coordinate system, the step 2 is to calculate the rudder effect of the rudder blade, the step 3 is to calculate the hydrodynamic force of the flow control plate, the step 4 is to calculate the rudder effect of the rudder with the flow control plate in the uniform incoming flow, and the step 5 is to introduce the wake effect for adjustment. Compared with the existing calculation method, the method has the following advantages: the influence of ship wake flow and propeller wake flow is considered, so that the accuracy meets the requirement of the design process; compared with a CFD method, the calculation process is greatly simplified, the design efficiency is improved, and the working intensity is reduced; the calculation method has wide coverage range and flexible use, and is suitable for the condition of continuously adjusting the scheme at the initial stage of design; and a special test is not needed, so that the cost is saved.
Description
Technical Field
The invention relates to a method for calculating the rudder effect of a marine rudder with a flow control plate, and belongs to the technical field of ship outfitting devices.
Background
Today, ship designs place increasingly higher demands on the rudder. On the one hand, the demand of ships for maneuverability is increasing, and there is an urgent need to improve the steering efficiency in all aspects. On the other hand, the sensitivity of the ship to the on-body resistance is in contradiction with the traditional mode of increasing the steering effect by increasing the steering area. Nowadays, the potentiality excavation of traditional rudder is almost exhausted, and this form of rudder of installing system flow board has been proposed abroad for a long time, has gained unusual effect, is worth very much domestic reference. The rudder with the flow control plate is characterized in that the flow control plate is arranged on a traditional rudder body in order to improve the fluid performance of the rudder, and the flow control plate cuts off the washing flow of two wing tips of the rudder plate to improve the pressure distribution on the surface of the rudder body, so that the effects of improving the rudder effect, improving the operating performance, reducing the total resource occupation and the like are achieved. The accurate calculation of the rudder effect of the rudder with the flow control plate relates to the analysis of the problems of a large amount of fluid and even multiphase fluid, and is difficult to solve, complex in flow, large in workload and not suitable for the calculation and judgment of the initial design stage.
The main content of the rudder effect calculation is to calculate the lift and the torque of the rudder. At present, the calculation of the rudder effect of the rudder with flow control plates at home and abroad mainly focuses on the following two methods: 1) by utilizing a CFD calculation method, the overall flow field model of the stern is established for solving, the workload is large and complex, and personnel are required to have higher fluid mechanics calculation level. 2) The lift and torque of the rudder plate are directly measured by using a method of a water tank test. The method is simple, accurate, time-consuming and labor-consuming, requires a large investment cost, and can only be applied to a specific scheme. At present, a calculation method which is simple and convenient and considers the actual condition of the stern incoming flow is not available.
Disclosure of Invention
The invention provides a method for calculating the rudder effect of a marine rudder with a flow control plate aiming at the defects of the prior art. According to the invention, by decomposing the complex model, based on the existing test result and a means of properly processing the boundary conditions, the rudder effect of the rudder with the flow control plate is calculated more conveniently, and a convenient and flexible calculation method is provided for calculating the rudder effect in the initial stage of design.
In order to solve the technical problem, the invention is realized by the following steps:
step 1: regarding the rudder with the flow control plate as a whole, and establishing a calculation coordinate system of the rudder in a stern flow field; and the whole rudder is divided into a rudder blade and two flow control plates, and respective sub-coordinate systems are respectively established.
Step 2: and (4) calculating the lift and torque of the rudder blade body under uniform incoming flow.
And step 3: and calculating the hydrodynamic force of the flow control plate under uniform incoming flow by using the plate frictional resistance.
And 4, step 4: according to the existing test results, the problem of hydrodynamic interference between the rudder blade and the flow control plate is solved, and the lift and the torque with the flow control plate are solved.
And 5: and clearing the boundary conditions. Correcting the induced propeller wake flow and the hull wake flow, and calculating the rudder effect of the flow control plate in the stern flow field
Compared with the existing calculation method, the method has the following advantages: the influence of ship wake flow and propeller wake flow is considered, so that the accuracy meets the requirement of the design process; compared with a CFD method, the calculation process is greatly simplified, the design efficiency is improved, and the working intensity is reduced; the calculation method has wide coverage range and flexible use, and is suitable for the condition of continuously adjusting the scheme at the initial stage of design; and a special test is not needed, so that the cost is saved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic diagram of a global coordinate system in an embodiment of the invention;
FIG. 2 is a schematic view of a rudder blade coordinate system in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a flow control plate coordinate system according to an embodiment of the present invention;
fig. 4 is a schematic view of a hydrodynamic calculation of a flow control plate according to an embodiment of the present invention;
FIG. 5 is a schematic view of a flow plate with different geometric dimensions according to an embodiment of the present invention;
fig. 6 shows a rudder with damper C having λ of 1.67 according to an embodiment of the present inventionL/CL' test pattern;
fig. 7 shows a rudder with damper C having λ of 1.67 according to an embodiment of the present inventionM/CM' test pattern;
the same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The invention is further elucidated with reference to the drawing. The preferred embodiments of the present invention are provided only to help illustrate the present invention and not to limit the scope of the present invention. The preferred embodiments of the present invention are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents. After reading the description of the invention, one skilled in the art can make various changes and modifications to the invention, and such equivalent changes and modifications also fall into the scope of the invention defined by the claims.
Now, the method for calculating the rudder effect of the marine rudder with flow control plates according to the invention will be described in detail.
In the step 1, the propeller and the rudder with the flow control plate are positioned in the uneven flow field of the stern, and the propeller shaft of the propeller is horizontal, so that a space rectangular coordinate system O-XYZ is established. The origin O of the coordinate system is established at the intersection point of the propeller shaft of the propeller and the reference line of the propeller, and the X axis is the extension line of the propeller shaft and points to the rear of the propeller; the Y axis is vertical upwards; the Z axis is determined by the right hand rule, see in particular FIG. 1. Then, the rudder with the flow control plates is split into rudder blades and 2 flow control plates, and sub-coordinate systems are respectively established. For the rudder blade, the establishment principle of a coordinate system o-xyz is as follows: the intersection point of the section of the origin o in the rudder spreading chord and the rudder axis; the y axis is superposed with the rudder axis and the direction is vertical and upward; the x axis is parallel to the chord length of the rudder and the direction is backward; the z-axis satisfies the right hand rule, see in particular fig. 2. For the flow control plate, a coordinate system o-xyz is established on the XOY section, wherein the origin o is located in the middle of the front edge of the flow control plate, the x axis points to the stern, the y axis is vertical upwards, and the z axis meets the right-hand rule, which is specifically shown in fig. 3.
In the step 2, the rudder effect of the rudder blade in the uniform incoming flow is calculated according to the 2 nd article of Steel Ship entry and construction Specification.
T＝FR (2)
In the formulae (1) and (2), FLThe lift force of the rudder when the rudder is full, T the torque of the rudder when the rudder is full, A the area of the rudder blade and VdThe speed of the ship and the arm moment. K1、K2、K3Are coefficients. Wherein, K1＝b2/AtB is the average height of the rudder blade, AtIs the sum of the areas of the rudder and the rudder post/rudder horn within the average height of the rudder blade. K2The section form of the rudder blade is selected according to the section form of the rudder blade, and China Classification corporation has corresponding specified coefficients for the commonly used section form of the rudder blade. K3The rudder-oar relationship and the form of the oar are selected from the data sheet of classification society of China. After the full rudder effect is obtained, the rudder effect under each rudder angle can be obtained according to the profile performance curve.
After the rudder effect of the rudder blade is obtained through calculation, the lift coefficient and the torque coefficient of the rudder blade can be obtained through calculation: cL’、CM’。
In the step 3, the hydrodynamic force of the flow control plate is calculated by using a plate frictional resistance calculation formula. Because the Re number of the stern flow field of the flow control plate is higher, the boundary layer on the surface of the flow control plate is turbulent flow, and the method solves the problem on the basis of the momentum integral equation of the Karman boundary layer. Taking the x direction as an example, the flow control plate is arranged at the incoming flow UXWhere δ is the thickness of the boundary layer at a distance x from the leading edge of the flow control plate (see fig. 4), the x-direction hydrodynamic force per unit width in a section from the leading edge of the flow control plate to x is:
in the formula (4), uxIs the flow velocity in the boundary layerAnd due to
Thus, it is possible to provide
In the formula (6), θ represents the momentum loss thickness. Substituting equation (6) into (5), integrate along the length/of the flow control plate, and note: when x is 0, theta is 0, and when x is l, theta is thetalThe x-direction hydrodynamic force of unit width is obtained as follows:
considering that the flow control plate is a geometric flat plate with a finite aspect ratio, when the velocity distribution in the boundary layer is assumed, both the scale effect and the geometric similarity need to be considered. Therefore, the method adopts the Houss formula to calculate Cfx。
In the formula (9), Re is a Reynolds number. F can be obtained by the following equations (7) to (9)X，fZThe solving method of (1) is the same as that of (1), and the Hours formula is also adopted to calculate CZ。
In step 4, the hydrodynamic coefficient of the entire rudder with the damper is obtained based on the already-disclosed test results and the already-completed calculation. Rudders of this type are typically symmetrical profile flaps with an aspect ratio of no more than 2. The currently published research has already carried out experimental research on rudders with flow control plates with aspect ratios of 0.5-2, and the rudders have data of dimensionless influence coefficients of the flow control plates with different geometric dimensions on the hydrodynamic force of the rudders. For ship rudder, the aspect ratio is usually 1.4-1.8, the invention adopts the test results of the aspect ratio lambda being 1, 1.67 and 2 as the calculation basis after internal difference. Fig. 5 is a schematic diagram of the flow control plates with different geometrical dimensions, which respectively represent a plurality of typical situations that the flow control plates are almost consistent with the cross section size of the rudder blade to the oblong limit. Geometric dimension of the flow control plate is as a dimensionless effective width he' means.
In the formula (10), heThe effective width is defined as A' as the average area of the flow control plate on one side, A as the average area of the rudder cross section, and b as the chord length. The geometric dimensions of the test flow control plate adopted by the invention are shown in the table 1, and the flow control plates with other geometric parameters can be subjected to interpolation calculation according to the test data of the typical conditions.
TABLE 1 geometric parameters of flow control plates
Fig. 6 and 7 show dimensionless influence coefficients of flow control plates with different geometric dimensions on rudder hydrodynamic force in a rudder test with flow control plates with an aspect ratio λ of 1.67. En route, CL、CMThe lift and torque coefficients of the rudder with the flow control plate; cL’、CM' is the lift and torque coefficient of the rudder blade without the flow plate.
In the step 5, the hydrodynamic force of the rudder with the flow control plate is finally obtained by introducing boundary conditions of the propeller wake flow and the hull wake flow in the form of correction of the current speed in front of the rudder. Wherein, the correction of the ship wake flow to the incoming flow speed is expressed as:
URω＝U(1-ωR) (11)
in the formula (11), U is the ship speed; omegaRCoefficient of wake flow, omega, at the rudder of a shipR＝(0.7Cb-0.08)c。CbIs the square coefficient of the ship, and c is the position coefficient. The rudder is arranged on the centerline plane, and c is 1.0; when rudders are arranged on both sides, C ═ Cb+0.15。
On the basis of the ship wake flow, the correction of the incoming flow speed by the propeller wake flow is expressed as follows:
URP＝URω+ku∞＝UP[ε+k(u∞/UP-1)](12)
in the formula (12), the advancing speed U of the propellerP＝(1-ωP)U，ωPIs the wake coefficient at the propeller; e ═ 1- ωR)/(1-ωP) (ii) a k is a coefficient between 0.5 and 1; u. of∞For the flow velocity of the propeller after acceleration and flowing to the position at infinity behind the propeller, the method adopts the following formula to calculate:
in formula (13), KTIs the thrust coefficient of the propeller, JPIs the advance speed coefficient. For rudder of ship, the rudder area S in the wake of the propellerPBy URPFor incoming velocity, the rudder area (S-S) outside the wake of the propellerP) By URIs the incoming flow velocity. Lift and torque P of rudder with flow control plateLM may be represented as:
in the formula (14), bP、bRRespectively the average chord length of the inner rudder and the outer rudder of the propeller wake flow.
Taking the forms of the rudder and the mother ship described in tables 2 and 3 as examples, the rudder effect of the rudder at each rudder angle is calculated by referring to the present invention.
TABLE 2 example parameters of rudders with dampers
| Geometric form | Rectangular rudder | Rudder blade chord length | 1.3m |
| Section plane | NACA0018 | Area of rudder blade | 2.8m2 |
| Aspect ratio of rudder blade | 1.67 | Number of flow-making plates | 2 |
| Rudder height | 2.2m | Flow-making plate form | V type |
TABLE 3 mother vessel example environmental parameters
| Speed U | 28kn | Diameter of propeller | 3.5m |
| Square coefficient Cb | 0.50 | Rotational speed of propeller | 250r/min |
| Area S of rudder in wake flowP | 1.8m2 | Coefficient of thrust KT | 0.20 |
| Screw moment of propeller | 5.2m | Coefficient of advance JP | 0.97 |
Firstly, according to the step 1 and the parameters in the table 2, establishing a whole coordinate system with a flow control plate and a rudder by referring to fig. 1; and (4) splitting the rudder blade and the upper and lower flow control plates, and respectively establishing respective sub-coordinate systems. Secondly, according to the step 2, a flow-around flow field model of the rudder body under the condition of uniform inflow is established, and the hydrodynamic coefficient of the rudder blade is calculated by using a surface element method, and the result can be shown in table 4.
TABLE 4 hydrodynamic coefficient of uniform inflow rudder blade
| Steering angle (°) | 2.5 | 5 | 10 | 15 | 17.5 | 20 |
| CL’ | 0.096 | 0.197 | 0.366 | 0.481 | 0.452 | 0.460 |
| CM’ | 0.0036 | 0.0069 | 0.0088 | 0.0092 | 0.0085 | 0.0087 |
Then, according to the step 3, a flow field model of the uniform inflow throttling plate is established, and the hydrodynamic coefficient of a single throttling plate is solved on the basis of the momentum integral equation of the karman boundary layer, and the result is shown in table 5.
TABLE 5 hydrodynamic coefficients of a single flow control plate under uniform incoming flow
| Steering angle (°) | 2.5 | 5 | 10 | 15 | 17.5 | 20 |
| Cx(×103) | 2.365 | 2.366 | 2.370 | 2.378 | 2.383 | 2.389 |
| Cz(×103) | 4.863 | 4.857 | 3.596 | 3.322 | 3.227 | 3.148 |
Next, according to the step 4, the hydrokinetic coefficient of the entire rudder with baffles flowing down uniformly is obtained, and the specific results are shown in table 6.
TABLE 6 hydrodynamic coefficient of rudder with damper plate under uniform incoming flow
| Steering angle (°) | 2.5 | 5 | 10 | 15 | 17.5 | 20 |
| CL’ | 0.170 | 0.250 | 0.559 | 0.633 | 0.621 | 0.451 |
| CM’ | 0.0056 | 0.0070 | 0.0095 | 0.0129 | 0.0136 | 0.0072 |
And finally, according to the step 5, introducing the hull wake flow and the propeller wake flow to obtain the rudder effect of the rudder with the flow control plates and the rudder, and referring to a table 7.
Water power of rudder with flow control plate under tail flow of table 7
| Angle of attack (°) | 2.5 | 5 | 10 | 15 | 17.5 | 20 |
| PL(kN) | 44.8 | 65.9 | 147.4 | 166.9 | 163.8 | 118.9 |
| M(kN*m) | 17.7 | 22.1 | 30.0 | 40.8 | 43.1 | 22.8 |
Therefore, the method can calculate the hydrodynamic force of the rudder with the flow control plate more simply, is more accurate than the traditional empirical formula algorithm, is more convenient and faster than the CFD algorithm, has lower cost than the test method, and is suitable for scheme selection and adjustment in the initial design stage.
Claims (7)
1. A method for calculating rudder effect of a rudder with a flow control plate for a ship is characterized by comprising the following steps:
step 1: regarding the rudder with the flow control plate as a whole, and establishing a calculation coordinate system of the rudder in a stern flow field; the whole rudder is divided into a rudder blade and two flow control plates, and respective sub-coordinate systems are respectively established;
step 2: calculating the lift and torque of the rudder blade body under uniform incoming flow;
and step 3: calculating the hydrodynamic force of the flow making plate under uniform incoming flow by using the plate friction resistance;
and 4, step 4: according to the existing test results, the problem of hydrodynamic interference between the rudder blade and the flow control plate is solved, and the lift and the torque with the flow control plate are solved;
and 5: clearing boundary conditions; and correcting the wake flow of the propeller and the wake flow of the ship body, and calculating the rudder effect of the flow control plate in the stern flow field.
2. The method for calculating the rudder effect of the marine rudder with the flow control plate according to claim 1, wherein the step 1 is to establish two sets of three primary and secondary coordinate systems of the whole rudder, the rudder blade and the flow control plate respectively; the propeller and the rudder with the flow control plate are positioned in an uneven flow field of a stern, and the propeller shaft of the propeller is horizontal, so that a space rectangular coordinate system O-XYZ is established; the origin O of the coordinate system is established at the intersection point of the propeller shaft of the propeller and the reference line of the propeller, and the X axis is the extension line of the propeller shaft and points to the rear of the propeller; the Y axis is vertical upwards; the Z axis is determined by a right hand rule; then, splitting the rudder with the flow making plates into rudder blades and 2 flow making plates, and respectively establishing a sub-coordinate system; for the rudder blade, the establishment principle of a coordinate system o-xyz is as follows: the intersection point of the section of the origin o in the rudder spreading chord and the rudder axis; the y axis is superposed with the rudder axis and the direction is vertical and upward; the x axis is parallel to the chord length of the rudder and the direction is backward; the z-axis satisfies the right hand rule; for the flow control plate, a coordinate system o-xyz is established on the XOY section of the flow control plate, wherein an origin o is positioned in the middle of the front edge of the flow control plate, an x axis points to the stern, a y axis is vertically upward, and a z axis meets the right-hand rule.
3. The method for calculating the rudder effect of the marine rudder with flow control plates according to claim 2, wherein the step 2 adopts a labeling algorithm in the current ship design specification to calculate the rudder effect of the rudder blade in the uniform incoming flow:
T＝FR (2)
in the formulae (1) and (2), FLThe lift force of the rudder when the rudder is full, T the torque of the rudder when the rudder is full, A the area of the rudder blade and VdThe speed of the ship and the arm moment. K1、K2、K3Is a coefficient; wherein, K1＝b2/AtB is the average height of the rudder blade, AtThe sum of the areas of the rudder and a rudder post/rudder horn in the average height range of the rudder blade; k2Selecting according to the section form of the rudder blade, wherein the China Classification society has corresponding specified coefficients for the section form of the commonly used rudder blade; k3The rudder-oar relationship and the oar form are selected from a data sheet of China Classification; after the full rudder effect is obtained, the rudder effect under each rudder angle can be obtained according to the profile performance curve; after the rudder effect of the rudder blade is obtained through calculation, the lift coefficient and the torque coefficient of the rudder blade can be obtained through calculation: cL’、CM’；
4. The method for calculating the rudder effect of the marine rudder with the flow control plates according to claim 3, wherein the flow control plates in the step 3 are higher in the Re number of the stern flow field, so that the boundary layer of the surfaces of the flow control plates is turbulent, and the method is solved on the basis of a momentum integral equation of the Karman boundary layer; taking the x direction as an example, the flow control plate is arranged at the incoming flow UXIn the specification, δ is the thickness of the boundary layer at a distance x from the front edge of the flow control plate, and the x-direction hydrodynamic force per unit width from the front edge of the flow control plate to the x is as follows:
in the formula (4), uxIs the flow velocity in the boundary layer, and because
Thus, it is possible to provide
In the formula (6), θ represents the momentum loss thickness. Substituting equation (6) into (5), integrate along the length/of the flow control plate, and note: when x is 0, theta is 0, and when x is l, theta is thetalThe x-direction hydrodynamic force of unit width is obtained as follows:
considering that the flow control plate is a geometric flat plate with a finite aspect ratio, when the velocity distribution in the boundary layer is assumed, the scale effect and the geometric similarity need to be considered; therefore, the method adopts the Houss formula to calculate Cfx；
In the formula (9), Re is a Reynolds number. F can be obtained by the following equations (7) to (9)X，fZThe solving method of (1) is the same as that of (1), and the Hours formula is also adopted to calculate CZ。
5. The method for calculating the rudder effect of the marine rudder with flow control plates according to claim 3, wherein the step 4 adopts public coupling test data between the flow control plates and the rudder blades, and calculates the rudder effect of the rudder with flow control plates in the uniform incoming flow more intuitively according to the calculation results of the step 2 and the step 3.
6. The method for calculating rudder effect of marine rudder with flow control plates according to claim 3, wherein the calculation in the step 4 is performed by using dimensionless hydrodynamic coefficients as calculation objects.
7. The method for calculating the rudder effect of the marine rudder with the flow control plates according to the claim 2, wherein in the step 5, the wake flow of the ship body and the wake flow of the propeller participate in the calculation in a mode of correcting the induced speed, so that the rudder effect of the rudder with the flow control plates in the wake flow is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106343.5A CN110816773A (en) | 2019-11-13 | 2019-11-13 | Method for calculating rudder effect of marine rudder with flow control plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106343.5A CN110816773A (en) | 2019-11-13 | 2019-11-13 | Method for calculating rudder effect of marine rudder with flow control plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110816773A true CN110816773A (en) | 2020-02-21 |
Family
ID=69554969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911106343.5A Pending CN110816773A (en) | 2019-11-13 | 2019-11-13 | Method for calculating rudder effect of marine rudder with flow control plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110816773A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010068024A2 (en) * | 2008-12-09 | 2010-06-17 | 현대중공업 주식회사 | Rudder with asymmetric cross section |
| CN205366034U (en) * | 2016-02-26 | 2016-07-06 | 广东海洋大学 | Novel rudder |
| CN107122508A (en) * | 2017-01-12 | 2017-09-01 | 南通航运职业技术学院 | A kind of rudder type is NACA0018 selection method |
| CN206691351U (en) * | 2016-12-19 | 2017-12-01 | 华南理工大学 | A kind of straight tail vane |
| JP2018203194A (en) * | 2017-06-09 | 2018-12-27 | 三井Ｅ＆Ｓ造船株式会社 | Ship rudder and ship |
-
2019
- 2019-11-13 CN CN201911106343.5A patent/CN110816773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010068024A2 (en) * | 2008-12-09 | 2010-06-17 | 현대중공업 주식회사 | Rudder with asymmetric cross section |
| CN205366034U (en) * | 2016-02-26 | 2016-07-06 | 广东海洋大学 | Novel rudder |
| CN206691351U (en) * | 2016-12-19 | 2017-12-01 | 华南理工大学 | A kind of straight tail vane |
| CN107122508A (en) * | 2017-01-12 | 2017-09-01 | 南通航运职业技术学院 | A kind of rudder type is NACA0018 selection method |
| JP2018203194A (en) * | 2017-06-09 | 2018-12-27 | 三井Ｅ＆Ｓ造船株式会社 | Ship rudder and ship |
Non-Patent Citations (4)
| Title |
|---|
| 中国船级社: "《钢制海船入级规范》", 1 July 2018 * |
| 喻红霞: "鱼型舵定常升力的数值模拟与试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 杨建民: "带制流板舵在螺旋桨尾流中的水动力性能", 《上海交通大学学报》 * |
| 邵世明等: "《船舶阻力》", 30 April 1995, 国防工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Sixty years of research on ship rudders: effects of design choices on rudder performance | |
| Dubbioso et al. | Analysis of propeller bearing loads by CFD. Part I: Straight ahead and steady turning maneuvers | |
| Wang et al. | CFD study of ship stopping maneuver by overset grid technique | |
| Nowruzi et al. | An experimental and CFD study on the effects of different pre-swirl ducts on propulsion performance of series 60 ship | |
| Rijpkema et al. | Viscous flow computations on propulsors: verification, validation and scale effects | |
| Yoo et al. | Computational and experimental study on performance of sails of a yacht | |
| JP2008143489A (en) | Duct for ship, method of manufacturing duct for ship and ship with duct for ship | |
| Toda et al. | Mean-flow measurements in the boundary layer and wake of a series 60 CB= 0.6 model ship with and without propeller | |
| US5456200A (en) | Rudder for reduced cavitation | |
| US5415122A (en) | Twisted rudder for a vessel | |
| CN105677945B (en) | A kind of multi-state propulsive performance optimum design method of composite propeller | |
| Liu | Mathematical modeling of inland vessel maneuverability considering rudder hydrodynamics | |
| Toxopeus et al. | Submarine hydrodynamics for off-design conditions | |
| Lin et al. | Shape optimization and hydrodynamic simulation of a Magnus anti-rolling device based on fully parametric modeling | |
| Truong et al. | The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water | |
| CN110816773A (en) | Method for calculating rudder effect of marine rudder with flow control plate | |
| Pearce et al. | Inviscid cavity flow over a wall-mounted fence | |
| Jo et al. | Aerodynamic design optimization of wing-sails | |
| Truong et al. | Improvement of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water | |
| Broglia et al. | Prediction of maneuvering properties for a tanker model by computational fluid dynamics | |
| Marzi et al. | Hydrodynamic Tools in Ship Design | |
| Qiu et al. | Effect of turbulence modeling on RANS computation of propeller tip vortex flow | |
| CN110062734B (en) | Fin device and ship | |
| Yokoi | Numerical experiment of flow around a flat plate with round edges | |
| Benes et al. | Preliminary computational fluid dynamics (CFD) simulation of EIIB push barge in shallow water |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
|
| RJ01 | Rejection of invention patent application after publication |