CN106326543A - Automatic finite element calculation method and automatic finite element calculation system for flowing of fluid in pipeline - Google Patents
Automatic finite element calculation method and automatic finite element calculation system for flowing of fluid in pipeline Download PDFInfo
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- CN106326543A CN106326543A CN201610702831.2A CN201610702831A CN106326543A CN 106326543 A CN106326543 A CN 106326543A CN 201610702831 A CN201610702831 A CN 201610702831A CN 106326543 A CN106326543 A CN 106326543A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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Abstract
The invention discloses an automatic finite element calculation method and an automatic finite element calculation system for flowing of fluid in a pipeline, which are capable of remarkably improving the research efficiency of related workers on the flowing problem of the fluid in the pipeline. The technical scheme provided by the invention is that the automatic finite element calculation method comprises the following steps: an upper computer receives an importing operation of a geometric model of the pipeline; the upper computer receives unified setting of parameters for finite element calculation; the upper computer calls a bottom layer finite element calculation model, and automatically divides grids in a standardized manner; the upper computer receives unified setting of boundary conditions; the upper computer calls the bottom layer finite element calculation model, and executes automatic finite element calculation; the upper computer outputs a finite element calculation result.
Description
Technical field
The present invention relates to a kind of finite element method and system, particularly relate to the automatic finite element of fluids within pipes flowing
Computational methods and system.
Background technology
Fluids within pipes flow field problem is a kind of relatively common flow problem, such as the flowing of water, oil pipeline in water pipe
The flowing of interior oil, and the flow field problem etc. of vessel inner blood.At present, the common method of the research being engaged in relevant issues is, profit
By ripe finite element fluid calculation business software (such as Ansys, Fluent etc.), operated by the gui interface of software self, enter
Row FEM calculation, solves problem according to result of calculation analysis.
This Normal practice has certain defect: Study on Problems person uses the operant skill of FEM calculation business software
Require higher；Pipeline model to different sizes and shapes, needs repeatedly to be modeled, GUI operation and interpretation of result etc.
Operating process, carries out a series of repetitive operation；It is unfavorable for that the relative analysis of same problems calculates.
Therefore, the problems referred to above are solved in the urgent need to a kind of new method at present.
Summary of the invention
The brief overview of one or more aspect given below is to provide the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and the key or decisive key element being both not intended to identify all aspects is the most non-
Attempt to define the scope in terms of any or all.Its unique purpose is intended to provide the one of one or more aspect in simplified form
A little concepts think the sequence of more detailed description given later.
It is an object of the invention to solve the problems referred to above, it is provided that a kind of fluids within pipes flowing automatic finite element calculates
Method and system, it is possible to significantly improve relevant staff's Efficiency to fluids within pipes flow field problem.
The technical scheme is that and present invention is disclosed the side that a kind of fluids within pipes flowing automatic finite element calculates
Method, including:
The import operation of host computer receiving pipeline geometric model；
Host computer receives the unified setting of the parameter of FEM calculation；
Host computer calls bottom limited element calculation model, automatic standardizing grid division；
Host computer receives the unified setting of boundary condition；
Host computer calls bottom limited element calculation model, performs finite element and automatically calculates；
Host computer output result of finite element.
One embodiment of the method that the fluids within pipes flowing automatic finite element according to the present invention calculates, pipeline includes straight tube
And bend pipe, pipeline section includes circle, square.
One embodiment of the method that the fluids within pipes flowing automatic finite element according to the present invention calculates, host computer is by upper
Machine interface, position receives outside input, and the calculating of bottom limited element calculation model processes separate.
One embodiment of the method that the fluids within pipes flowing automatic finite element according to the present invention calculates, host computer receives pipe
During the import operation of road geometric model, automatically identify the entrance and exit of pipeline.
One embodiment of the method that the fluids within pipes flowing automatic finite element according to the present invention calculates, host computer output mark
The result of finite element of quasiconfiguaration.
Present invention further teaches the system that a kind of fluids within pipes flowing automatic finite element calculates, including:
Model imports module, the import operation of host computer receiving pipeline geometric model；
Parameter setting module, host computer receives the unified setting of the parameter of FEM calculation；
Stress and strain model module, host computer calls bottom limited element calculation model, automatic standardizing grid division；
Border setting module, host computer receives the unified setting of boundary condition；
FEM calculation module, host computer calls bottom limited element calculation model, performs finite element and automatically calculates；
Result output module, host computer output result of finite element.
One embodiment of the system that the fluids within pipes flowing automatic finite element according to the present invention calculates, pipeline includes straight tube
And bend pipe, pipeline section includes circle, square.
One embodiment of the system that the fluids within pipes flowing automatic finite element according to the present invention calculates, host computer is by upper
Machine interface, position receives outside input, and the calculating of bottom limited element calculation model processes separate.
One embodiment of the system that the fluids within pipes flowing automatic finite element according to the present invention calculates, model imports module
Automatically the entrance and exit of pipeline is identified.
One embodiment of the system that the fluids within pipes flowing automatic finite element according to the present invention calculates, result output module
The result of finite element of outputting standard form.
The present invention contrasts prior art following beneficial effect: the solution of the present invention includes the feature of three aspects, the
On the one hand being that parameter arranges standardization, i.e. for similar fluids within pipes flow field problem, user has only to input a finite element
Calculate parameter and boundary condition, it is not necessary to the duplication of labour；Second aspect is that user operation is simplified, and fluid flow fields FEM calculation is led to
The finite element fluid calculation model crossing automatization realizes, simple to operate, reduces the operation of the professional finite element software to user
The requirement of ability；The third aspect is to facilitate the comparative study of same problems, by by the finite element meter of host computer interface and bottom
The standardized fluid calculating model composition calculates test platform, can be used to similar fluids within pipes flow field problem is carried out repeatability
Comparative study.
Generally, for similar fluids within pipes flow field problem, user only need to input FEM calculation parameter and
Boundary condition, it is not necessary to the duplication of labour, i.e. arranges the efficiency improving same problems FEM calculation by normalizing parameter；Finite element
Calculate and realized by the limited element calculation model of automatization, simple to operate, reduce wanting of the professional software operational capacity to user
Ask, i.e. calculate liberation user's both hands by automatization, improve the analysis of fluid flow problem and solve efficiency；By by host computer
The standardized fluid of the limited element calculation model composition of interface and bottom calculates test platform, can be used to similar fluids within pipes
Flow field problem carries out repeatable comparative study.
Accompanying drawing explanation
Fig. 1 shows the flow process of the preferred embodiment of the method for the fluids within pipes flowing automatic finite element calculating of the present invention
Figure.
Fig. 2 shows the principle of the preferred embodiment of the system of the fluids within pipes flowing automatic finite element calculating of the present invention
Figure.
Detailed description of the invention
After reading the detailed description that embodiment of the disclosure in conjunction with the following drawings, it is possible to be more fully understood that the present invention's
Features described above and advantage.In the accompanying drawings, each assembly is not necessarily drawn to scale, and has similar correlation properties or feature
Assembly be likely to be of same or like reference.
The embodiment of the method that fluids within pipes flowing automatic finite element calculates
Fig. 1 shows the stream of the preferred embodiment of the method for the fluids within pipes flowing automatic finite element calculating of the present invention
Journey.Referring to Fig. 1, details are as follows for the enforcement step of the method for the present embodiment.
Step S1: the import operation of host computer receiving pipeline geometric model.
The pipeline of the present embodiment can be that straight tube can also be for bend pipe, and the cross section of pipeline can be regular circle, side
Shape, it is also possible to for other shapes.
Host computer, when the import operation of receiving pipeline geometric model, identifies the entrance and exit of pipeline automatically.
Step S2: host computer receives the unified setting of the parameter of FEM calculation.
Set FEM calculation relevant parameter include finite element calculating unit lattice type, cell size, fluid density,
Fluid viscosity coefficient etc..Realize unified parameters to arrange and can realize same problems and have only to arrange once, decrease the duplication of labour.
Step S3: host computer calls bottom limited element calculation model, automatic standardizing grid division.
Step S4: host computer receives the unified setting of boundary condition.
These boundary conditions include inlet flow rate, outlet pressure etc..The unified setting realizing boundary condition can realize same
Class problem has only to arrange once, decreases the duplication of labour.
Step S5: host computer calls bottom limited element calculation model, performs finite element and automatically calculates.
Host computer receives outside input, host computer interface and the calculating of bottom limited element calculation model by host computer interface
Process separate, be different from the gui interface of the most business-like finite element analysis software.
Step S6: host computer output result of finite element.
The result of finite element of host computer outputting standard form, the result of output includes the distribution of pressure, velocity field, entrance
The data such as pressure and exit velocity statistics.
Operation based on above-mentioned steps, by by the interface of the host computer of the present embodiment and bottom limited element calculation model institute
The standardized fluid of composition calculates test platform, can be used to that similar fluids within pipes flow field problem carries out repeatable contrast and grinds
Study carefully.
The embodiment of the system that fluids within pipes flowing automatic finite element calculates
Fig. 2 shows the former of the preferred embodiment of the system of the fluids within pipes flowing automatic finite element calculating of the present invention
Reason.Referring to Fig. 2, the system of the present embodiment includes: model imports module 1, parameter setting module 2, stress and strain model module 3, limit
Boundary's setting module 4, FEM calculation module 5, result output module 6.
Model imports in module 1, the import operation of host computer receiving pipeline geometric model.The pipeline of the present embodiment can be
Straight tube can also be bend pipe, and the cross section of pipeline can be the circle, square of rule, it is also possible to for other shapes.Host computer exists
During the import operation of receiving pipeline geometric model, automatically identify the entrance and exit of pipeline.
In parameter setting module 2, host computer receives the unified setting of the parameter of FEM calculation.Set FEM calculation
Relevant parameter includes finite element calculating unit lattice type, cell size, fluid density, fluid viscosity coefficient etc..Realize unified
Parameter arranges and can realize same problems and have only to arrange once, decreases the duplication of labour.
In stress and strain model module 3, host computer calls bottom limited element calculation model, automatic standardizing grid division.
In border setting module 4, host computer receives the unified setting of boundary condition.These boundary conditions include entrance stream
Speed, outlet pressure etc..Realize the unified setting of boundary condition to realize same problems and have only to arrange once, decrease repetition
Work.
In FEM calculation module 5, host computer calls bottom limited element calculation model, performs finite element and automatically calculates.On
Position machine receives outside input by host computer interface, and the calculating of host computer interface and bottom limited element calculation model processes the most solely
Vertical, it is different from the gui interface of the most business-like finite element analysis software.
In result output module 6, host computer output result of finite element.The finite element meter of host computer outputting standard form
Calculating result, the result of output includes the data such as the distribution of pressure, velocity field, inlet pressure and exit velocity statistics.
Operation based on above-mentioned module, by by the interface of the host computer of the present embodiment and bottom limited element calculation model institute
The standardized fluid of composition calculates test platform, can be used to that similar fluids within pipes flow field problem carries out repeatable contrast and grinds
Study carefully.
Understand from the embodiment of aforesaid method and system, present invention achieves the standardization ginseng of flow field problem in pipeline
Number is arranged and automatization's FEM calculation, reduces the requirement of the professional finite element analysis software operational capacity to user, improves
The analysis of fluid flow problem and solve efficiency, calculates test platform by standardized fluid, can be used in similar pipeline
Fluid flow problem carries out repeatable comparative study.Technical scheme is also applied for various application scenario, such as, water
The flowing of oil in the flowing of water, oil pipeline in pipe, and the problem such as the flowing of vessel inner blood.
Although illustrate for making explanation simplify said method and be described as a series of actions, it should be understood that and understand,
These methods are not limited by the order of action, because according to one or more embodiments, some actions can occur in different order
And/or with from depicted and described herein or the most not shown and describe but it will be appreciated by those skilled in the art that other
Action occurs concomitantly.
Those skilled in the art will further appreciate that, the various illustrative described in conjunction with the embodiments described herein
Logic plate, module, circuit and algorithm steps can be embodied as electronic hardware, computer software or combination of the two.For clearly
Chu ground explains orally this interchangeability of hardware and software, various illustrative components, frame, module, circuit and step be above with
Its functional form makees what vague generalization described.This type of is functional be implemented as hardware or software depends on specifically applying and
Put on the design constraint of total system.Technical staff can realize described by different modes for every kind of application-specific
Functional, but such realize decision-making and should not be interpreted to cause departing from the scope of the present invention.
The various illustrative logic plates, module and the circuit that describe in conjunction with presently disclosed embodiment can use general place
Reason device, digital signal processor (DSP), special IC (ASIC), field programmable gate array (FPGA) or other can compile
Journey logical device, discrete door or transistor logic, discrete nextport hardware component NextPort or its be designed to carry out function described herein
Any combination realizes or performs.General processor can be microprocessor, but in alternative, this processor can be to appoint
Processor, controller, microcontroller or the state machine what is conventional.Processor is also implemented as the combination of calculating equipment, example
One or more microprocessors of cooperating with DSP core with the combination of microprocessor, multi-microprocessor such as DSP or any its
He configures this type of.
The method described in conjunction with embodiment disclosed herein or the step of algorithm can be embodied directly in hardware, in by processor
Embody in the software module performed or in combination of the two.Software module can reside in RAM memory, flash memory, ROM deposit
Reservoir, eprom memory, eeprom memory, depositor, hard disk, removable dish, the appointing of CD-ROM or known in the art
What in the storage medium of his form.Exemplary storage medium is coupled to processor so that this processor can be from/to this storage
Medium reads and write information.In alternative, storage medium can be integrated into processor.Processor and storage medium can
Reside in ASIC.ASIC can reside in user terminal.In alternative, processor and storage medium can be as discrete sets
Part is resident in the user terminal.
In one or more exemplary embodiments, described function can be in hardware, software, firmware or its any combination
Middle realization.If being embodied as computer program in software, the most each function can be as the instruction of one or more bars or generation
Code storage on a computer-readable medium or mat its transmit.Computer-readable medium includes computer-readable storage medium and communicates
Both media, it includes any medium facilitating computer program to shift to another ground from a ground.Storage medium can be can quilt
Any usable medium that computer accesses.Non-limiting as example, such computer-readable medium can include RAM, ROM,
EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage apparatus, maybe can be used to carry or store instruction
Or the desirable program code of data structure form and other medium any that can be accessed by a computer.Any connection is also by by rights
It is referred to as computer-readable medium.Such as, if software is to use coaxial cable, fiber optic cables, twisted-pair feeder, numeral subscriber's line
(DSL) or the most infrared, radio and microwave etc wireless technology from web site, server or other remote source pass
Send, then this coaxial cable, fiber optic cables, twisted-pair feeder, DSL or the most infrared, radio and microwave etc is wireless
Technology is just included among the definition of medium.Dish (disk) and dish (disc) include compact disc as used herein
(CD), laser dish, laser disc, digital versatile dish (DVD), floppy disk and blu-ray disc, its mid-game (disk) often reproduces in the way of magnetic
Data, and dish (disc) reproduces data optically with laser.Combinations of the above also should be included in computer-readable medium
In the range of.
Thering is provided of this disclosure being previously described is for making any person skilled in the art all can make or use these public affairs
Open.Various amendment of this disclosure the most all will be apparent from, and as defined herein general
Suitable principle can be applied to other variants spirit or scope without departing from the disclosure.Thus, the disclosure is not intended to be limited
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope caused.
Claims (10)
1. the method that a fluids within pipes flowing automatic finite element calculates, it is characterised in that including:
The import operation of host computer receiving pipeline geometric model；
Host computer receives the unified setting of the parameter of FEM calculation；
Host computer calls bottom limited element calculation model, automatic standardizing grid division；
Host computer receives the unified setting of boundary condition；
Host computer calls bottom limited element calculation model, performs finite element and automatically calculates；
Host computer output result of finite element.
The method that fluids within pipes the most according to claim 1 flowing automatic finite element calculates, it is characterised in that pipeline bag
Including straight tube and bend pipe, pipeline section includes circle, square.
The method that fluids within pipes the most according to claim 1 flowing automatic finite element calculates, it is characterised in that host computer
Receive outside input by host computer interface, and the calculating of bottom limited element calculation model processes separate.
The method that fluids within pipes the most according to claim 1 flowing automatic finite element calculates, it is characterised in that host computer
During the import operation of receiving pipeline geometric model, automatically identify the entrance and exit of pipeline.
The method that fluids within pipes the most according to claim 1 flowing automatic finite element calculates, it is characterised in that host computer
The result of finite element of outputting standard form.
6. the system that a fluids within pipes flowing automatic finite element calculates, it is characterised in that including:
Model imports module, the import operation of host computer receiving pipeline geometric model；
Parameter setting module, host computer receives the unified setting of the parameter of FEM calculation；
Stress and strain model module, host computer calls bottom limited element calculation model, automatic standardizing grid division；
Border setting module, host computer receives the unified setting of boundary condition；
FEM calculation module, host computer calls bottom limited element calculation model, performs finite element and automatically calculates；
Result output module, host computer output result of finite element.
The system that fluids within pipes the most according to claim 6 flowing automatic finite element calculates, it is characterised in that pipeline bag
Including straight tube and bend pipe, pipeline section includes circle, square.
The system that fluids within pipes the most according to claim 6 flowing automatic finite element calculates, it is characterised in that host computer
Receive outside input by host computer interface, and the calculating of bottom limited element calculation model processes separate.
The system that fluids within pipes the most according to claim 6 flowing automatic finite element calculates, it is characterised in that model is led
Enter module and automatically identify the entrance and exit of pipeline.
The system that fluids within pipes the most according to claim 6 flowing automatic finite element calculates, it is characterised in that result
The result of finite element of output module outputting standard form.
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| CN201610702831.2A CN106326543A (en) | 2016-08-22 | 2016-08-22 | Automatic finite element calculation method and automatic finite element calculation system for flowing of fluid in pipeline |
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| CN201610702831.2A CN106326543A (en) | 2016-08-22 | 2016-08-22 | Automatic finite element calculation method and automatic finite element calculation system for flowing of fluid in pipeline |
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| CN107908821A (en) * | 2017-10-19 | 2018-04-13 | 北京理工大学 | Structural strain energy entropy characterization calculates and result treatment system |
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Application publication date: 20170111 |