Aircraft aerodynamic model selection method based on CFD software shock wave simulation capability
An aircraft and shock technology, which is applied in the field of aerodynamic selection of super aircraft based on the shock simulation capability of CFD software, can solve the problems of lengthening the design period of the aircraft, reducing the design quality, and evaluating the shock flow characteristic simulation capability not systematically.
Pending Publication Date: 2020-10-30
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology
[0005] The object of the present invention is to solve the problem that the existing CFD software does not evaluate the simulation ability of the shock wave flow characteristics systematically, which leads to the prolongation of the design cycle of the aircraft and the reduction of the design quality, and provides an aircraft aerodynamic type selection method based on the shock wave simulation ability of the CFD software , this method can realize the quantitative evaluation of the main hypersonic flow characteristic-shock wave, form a shock wave simulation ability evaluation system, and provide technical support for the design and selection of aircraft
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[0039] The invention provides an aircraft aerodynamic type selection method based on the shock wave simulation capability of CFD software. Aiming at the main flow characteristic of the hypersonic aircraft in the working state—shock wave, the selection of CFD software with good or bad shock wave simulation capabilities is carried out. The method selects The CFD software with the highest quantitative score of the overall shock flow characteristic simulation ability is used for the overall design, and then for the shock flow of different components after the overall design, the CFD software with the best simulation ability for the shock wave evaluation example is selected for component design, and the The optimal configuration of design tools can greatly shorten the design cycle and improve the accuracy of aerodynamic parameters.
[0040] Such as figure 1 with figure 2 As shown, the aircraft aerodynamic type selection method based on CFD software shock wave simulation capabilit...
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The invention provides an aircraft aerodynamic model selection method based on CFD software shock wave simulation capability, and solves the problems that the design period of an aircraft is prolongedand the design precision is reduced due to the fact that the existing CFD software is not systematic in evaluation of the simulation capability of shock wave flow characteristics. The method comprises the following steps: 1, establishing a shock wave flow characteristic database; 2, quantifying the shock wave simulation capability to obtain CFD software with the highest shock wave evaluation example simulation capability and a quantification score M of the CFD software for the overall shock wave flow characteristic simulation capability; 3, selecting CFD software with the highest quantification score M of the overall shock wave flow characteristic simulation capability according to the overall design of the aircraft; selecting a corresponding shock wave evaluation example according to aircraft part design, and selecting CFD software with the highest simulation capability of the shock wave evaluation example according to the quantitative score N of the shock wave evaluation example; and 4, according to the selected CFD software, performing aircraft overall and component aerodynamic model selection design.
Description
technical field [0001] The invention relates to the field of aerodynamic type selection design of hyperflight vehicles, in particular to an aerodynamic type selection method for hyperflight vehicles based on the shock wave simulation capability of CFD software. Background technique [0002] Computational fluid dynamics (CFD) plays an increasingly important role in aircraft design, and has become the third major design method after wind tunnel experiments and theoretical analysis, and plays a very important role in all stages of aircraft design, so , the reliability of the CFD software simulation results has attracted more and more attention. However, if any advanced numerical simulation technology plays a role in engineering projects and obtains due benefits, it is necessary to make a comprehensive evaluation of the accuracy, accuracy and scope of application of the software used in numerical simulation to ensure the reliability of numerical simulation results And usability...
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IPC IPC(8): G06F30/28G06F30/15
CPCG06F30/28G06F30/15Y02T90/00
Inventor 曹平宽梁益华杨永
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA