CN107844673A - A kind of aero-engine complete machine three-dimensional pneumatic emulation mode - Google Patents
A kind of aero-engine complete machine three-dimensional pneumatic emulation mode Download PDFInfo
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- CN107844673A CN107844673A CN201711340337.7A CN201711340337A CN107844673A CN 107844673 A CN107844673 A CN 107844673A CN 201711340337 A CN201711340337 A CN 201711340337A CN 107844673 A CN107844673 A CN 107844673A
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Abstract
The present invention provides a kind of aero-engine complete machine three-dimensional pneumatic emulation mode, and step is as follows：Complete machine 3-D geometric model is inputted in simulation software and assigns attribute and parameter；Interface is set to realize the extraction of data, conversion and bi-directional in the computation model of different parts；Obtain part inlet and outlet boundary condition；Carry out complete machine three-dimensional pneumatic using parts match program to emulate；Carry out parts match；The convergence of simulation result is judged, if reaching convergent requirement, the emulation of complete machine three-dimensional pneumatic is completed；If being unsatisfactory for convergent requirement, adjustment part inlet and outlet boundary condition, reuse parts match program and carry out the emulation of complete machine three-dimensional pneumatic, iterative calculation, until meeting to require.Method provided by the present invention, there is provided high-precision complete machine three-dimensional pneumatic simulation result, realize the assessment to matching effect under the conditions of different part complete machines.
Description
Technical field
The invention belongs to aerial turbo fan engine conceptual design process field, more particularly to aerodynamics simu1ation field, tool
Body is related to a kind of aero-engine complete machine three-dimensional pneumatic emulation mode.
Background technology
With the development of the subjects such as Fluid Mechanics Computation and computer technology, technology of numerical simulation achieves rapid progress,
And important function has been played in the pneumatic performance design of engine, promote the shortening in engine research, development cycle, R＆D costs
Reduce the raising with product quality.
Engine aerodynamics simu1ation can be divided into complete machine aerodynamics simu1ation and part aerodynamics simu1ation, and the latter is more ripe, generally may be used
To carry out three-dimensional pneumatic emulation；But complete machine aerodynamics simu1ation relatively fall behind, with zero dimension, it is one-dimensional based on, two-dimensional simulation still constantly it is complete
Kind, three-dimensional artificial is on the whole also in the exploratory stage.At present, it is independent progress that the three-dimensional pneumatic emulation of each part is mostly, Wu Fakao
Consider the influence between part, it is imported and exported boundary condition and is also difficult to accurate simulation complete machine working condition, each part often occurs and exists
Design objective has been met or exceeded under the conditions of ideal boundary, but work can not be matched well under complete machine environment, has caused to send out
Motivation complete machine is unsatisfactory for design objective.
Following defect be present in prior art.1) because each part aerodynamics simu1ation focus of engine is different, machine is solved
There is very big difference in reason, there is no which kind of fluid emulation software to meet the emulation demand of all parts, therefore, pass through existing skill
Simulation result precision obtained by art is poor, it is difficult to which matching effect is assessed under the conditions of realizing different part complete machines；2) prior art makes
During with carrying out simulation calculation with a software, method there is no to give different turbulence models to the different zonings of discrete model,
Therefore the emulation to all part Flow details can not be realized, acquired results are difficult to reflect Real Flow Field situation, can not guidance department
Part Curve guide impeller；3) prior art uses integrated modelling to whole engine, it is necessary to consider the coordination one between different parts
Causing, Geometric Modeling and corresponding mesh generation need the plenty of time, solves the cycle when going wrong and also grows, therefore, less efficient,
It is difficult to meet the requirement of fast reaction in engineer applied；It is 4) very high to hardware resource requirements when prior art carries out simulation calculation,
It is difficult to realize in general work station.
The content of the invention
It is an object of the invention to provide a kind of aero-engine complete machine three-dimensional pneumatic emulation mode, overcome or alleviated by existing
At least one drawbacks described above of technology.
The purpose of the present invention is achieved through the following technical solutions：A kind of aero-engine complete machine three-dimensional pneumatic emulation mode,
Comprise the following steps,
Step 1：Complete machine 3-D geometric model is inputted in simulation software and assigns subsidiarity and parameter；
Step 2：Interface is set to realize the extraction of data, conversion and two-way biography in the computation model of different parts
Pass；
Step 3：Obtain part inlet and outlet boundary condition；
Step 4：Carry out complete machine three-dimensional pneumatic using parts match program to emulate；
Step 5：Carry out parts match；
Step 6：The convergence of simulation result is judged, if reaching convergent requirement, the emulation of complete machine three-dimensional pneumatic is completed；
If being unsatisfactory for convergent requirement, adjustment part inlet and outlet boundary condition, reuse parts match program and carry out complete machine three-dimensional pneumatic
Emulation, iterative calculation, until meeting to require.
Preferably, in the step 3, imitated by using overall performance zero dimension program, and using characteristics of components figure
True part imports and exports boundary condition.
Preferably, in the step 4, each part is independently calculated using corresponding simulation software, and matcher is responsible for difference
Part emulation integrates, and specially matcher coordinates the computing of different part simulation softwares by interface, passes through different portions
The associated working mechanism of part simulation software and parts match program, to realize being operated together for different part simulated programs.
Preferably, in the step 5, when carrying out parts match, using part Flow Field Calculation acquired results, institute is extracted
Parameter is needed, and according to existing test data, required parameter is modified, to ensure the accuracy of result of calculation；Further according to whole
Parts match principle and error requirements under the conditions of machine, carry out under the conditions of complete machine the matching of required parameter between different parts and comment
Estimate.
Preferably, in the step 6, convergence judges it is ensured that between the convergence of part itself and different parts
Match somebody with somebody.
Preferably, in the step 6, the adjustment of part inlet and outlet boundary condition is realized by interface.
A kind of beneficial effect of aero-engine complete machine three-dimensional pneumatic emulation mode provided by the present invention is that emulation is smart
Degree is high, can be achieved to be more nearly the part aerodynamic characteristic emulation of complete machine actual operating conditions；Realize part under the conditions of complete machine
The matching analysis, the matching working condition between advance evaluation means, instructs the integrated design between part, is engine components
Design and improve provide technical basis；The lifting of three-dimensional simulation model precision under the conditions of complete machine is realized, predicts engine steady state
Under the conditions of overall performance；The experimental test conceptual design of complete machine and part is instructed, such as the confirmation of sensor arrangement, test result
And amendment；Promote aero-engine complete machine to develop to three dimensional design, improve master-plan precision and level, further improve and start
Machine R＆D mode.
Brief description of the drawings
Fig. 1 is the flow chart of aero-engine complete machine three-dimensional pneumatic emulation mode of the present invention.
Embodiment
The aero-engine complete machine three-dimensional pneumatic emulation mode of the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of aero-engine complete machine three-dimensional pneumatic emulation mode, implements as follows.
Step 1：Complete machine 3-D geometric model is inputted in simulation software and assigns attribute and parameter, wherein including calculating
The attributes such as point, characteristics of components and parameter.
Step 2：Interface is set in the computation model of different parts.Interface energy is set in the part computation model
Realize the extraction, conversion and bi-directional of data.
Step 3：Obtain part inlet and outlet boundary condition.Especially by engine overall performance zero dimension program, part is utilized
Performance plot obtains the boundary condition of part emulation.
Step 4：Carry out complete machine three-dimensional pneumatic using parts match program to emulate.Carry out complete machine using parts match program
When three-dimensional pneumatic emulates, each part independently calculated using corresponding simulation software (such as using NUMECA calculating fans and compressor,
Combustion chamber is calculated using FLUENT, turbine is calculated using CFX, jet pipe etc. is calculated using FLUENT), matcher is responsible for different portions
Part emulation integrates, and specifically matcher coordinates the computing of different part simulation softwares (such as material calculation by interface
Coordinate), by the associated working mechanism of different part simulation softwares and parts match program (such as part calculate which kind of journey arrived
Carry out parts match after degree), realize being operated together for different part simulated programs.
Step 5：Carry out parts match.When carrying out parts match, using part Flow Field Calculation acquired results, needed for extraction
Parameter, such as flow, shaft work, rotating speed, and according to engineering development experience and test data, required parameter is modified, to the greatest extent may be used
The elimination error of energy, it is ensured that the accuracy of result of calculation.According to the parts match principle under the conditions of complete machine and specific error requirements,
Carry out the matching and assessment of parameter needed for flow, shaft work, rotating speed etc. between different parts under the conditions of complete machine.
Step 6：The convergence of simulation result is judged, when convergence is judged, convergence and the difference of part itself should be realized
Matching between part.If reaching convergent requirement, the emulation of complete machine three-dimensional pneumatic is completed；If being unsatisfactory for convergent requirement, adjustment portion
Part imports and exports boundary condition, is realized by interface, reuses parts match program and carries out the emulation of complete machine three-dimensional pneumatic, iteration meter
Calculate, until meeting to require.
The implementation of the present embodiment can bring as follows：1) high-precision complete machine three-dimensional pneumatic simulation result, realization pair are provided
The assessment of matching effect under the conditions of different part complete machines；2) High Precision Simulation to different part Flow details is realized, is part
Curve guide impeller provides support；3) efficiency of complete machine three-dimensional pneumatic emulation is improved, iteratively faster, shortens simulation time；4) improve whole
The application flexibility of machine three-dimensional pneumatic emulation mode, realizes application on a workstation.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (6)
- A kind of 1. aero-engine complete machine three-dimensional pneumatic emulation mode, it is characterised in that comprise the following steps,Step 1：Complete machine 3-D geometric model is inputted in simulation software and assigns attribute and parameter；Step 2：Interface is set to realize the extraction of data, conversion and bi-directional in the computation model of different parts；Step 3：Obtain part inlet and outlet boundary condition；Step 4：Carry out complete machine three-dimensional pneumatic using parts match program to emulate；Step 5：Carry out parts match；Step 6：The convergence of simulation result is judged, if reaching convergent requirement, the emulation of complete machine three-dimensional pneumatic is completed；If no Meet convergent requirement, then adjust part inlet and outlet boundary condition, reuse parts match program and carry out the emulation of complete machine three-dimensional pneumatic, Iterative calculation, until meeting to require.
- 2. aero-engine complete machine three-dimensional pneumatic emulation mode according to claim 1, it is characterised in that the step 3 In, obtain simulation component inlet and outlet boundary condition by using overall performance zero dimension program, and using characteristics of components figure.
- 3. aero-engine complete machine three-dimensional pneumatic emulation mode according to claim 2, it is characterised in that the step 4 In, each part is independently calculated using corresponding simulation software, and matcher is responsible for the integrated of different part emulation, specially matches journey Sequence coordinates the computing of different part simulation softwares by interface, passes through different part simulation softwares and the connection of parts match program Working mechanism is closed, to realize being operated together for different part simulated programs.
- 4. aero-engine complete machine three-dimensional pneumatic emulation mode according to claim 3, it is characterised in that the step 5 In, when carrying out parts match, using part Flow Field Calculation acquired results, parameter needed for extraction, and according to existing test data, it is right Required parameter is modified, to ensure the accuracy of result of calculation；Further according to the parts match principle and error under the conditions of complete machine It is required that carry out the matching and assessment of required parameter between different parts under the conditions of complete machine.
- 5. aero-engine complete machine three-dimensional pneumatic emulation mode according to claim 4, it is characterised in that the step 6 In, convergence judges the matching it is ensured that between the convergence of part itself and different parts.
- 6. aero-engine complete machine three-dimensional pneumatic emulation mode according to claim 5, it is characterised in that the step 6 In, the adjustment of part inlet and outlet boundary condition is realized by interface.
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Cited By (7)
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| CN110020491A (en) * | 2019-04-16 | 2019-07-16 | 厦门大学 | A kind of propeller and engine mixed dimension emulation mode |
| CN110486326A (en) * | 2019-07-31 | 2019-11-22 | 中国航发沈阳发动机研究所 | Aviation turbofan engine fan aeroperformance and acoustical behavior integrated design method |
| CN110609493A (en) * | 2019-09-30 | 2019-12-24 | 大连理工大学 | Real-time simulation method of aero-engine control system |
| CN110717273A (en) * | 2019-10-11 | 2020-01-21 | 内蒙古第一机械集团股份有限公司 | Technological process simulation boundary condition construction method |
| CN111079235A (en) * | 2019-12-11 | 2020-04-28 | 内蒙动力机械研究所 | Method for simulating and rapidly converging internal flow field of solid rocket engine |
| CN112926193A (en) * | 2021-01-29 | 2021-06-08 | 中国航发沈阳发动机研究所 | Aircraft engine performance simulation method |
| CN113656907A (en) * | 2021-08-04 | 2021-11-16 | 中国航发沈阳发动机研究所 | Three-dimensional steady-state simulation matching iteration method for aircraft engine |
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| CN112926193A (en) * | 2021-01-29 | 2021-06-08 | 中国航发沈阳发动机研究所 | Aircraft engine performance simulation method |
| CN112926193B (en) * | 2021-01-29 | 2024-03-19 | 中国航发沈阳发动机研究所 | Aeroengine performance simulation method |
| CN113656907A (en) * | 2021-08-04 | 2021-11-16 | 中国航发沈阳发动机研究所 | Three-dimensional steady-state simulation matching iteration method for aircraft engine |
| CN113656907B (en) * | 2021-08-04 | 2022-08-19 | 中国航发沈阳发动机研究所 | Three-dimensional steady-state simulation matching iteration method for aircraft engine |
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Inventor after: Sui Yanfeng Inventor after: Chen Hongfu Inventor after: Liu Qingdong Inventor after: Liang Caiyun Inventor after: Ning Huaisong Inventor after: Zheng Ning Inventor after: Shi Yanyan Inventor after: Wang Yanli Inventor after: Yu Haishun Inventor after: Sun Xiaohuan Inventor before: Sui Yanfeng Inventor before: Liu Qingdong Inventor before: Ning Huaisong Inventor before: Zheng Ning Inventor before: Shi Yanyan Inventor before: Wang Yanli Inventor before: Yu Haishun Inventor before: Sun Xiaohuan Inventor before: Chen Hongfu |
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Application publication date: 20180327 |