Modeling Method for Virtual Test of Combustion Chamber Test Bench

Abstract

The invention discloses a combustor test bed virtual test modeling method. The method comprises following steps of step 1, dividing a test model into multiple finite control volumes by adopting a finite volume method; establishing the mathematic model equations of the finite control volumes; step 2, establishing a simulation model according to the mathematic model equations, thus carrying out parallel operation and obtaining related parameters of the test model. Through adoption of the combustor test bed virtual test modeling method, the real working situations of an engine can be simulated relatively realistically, and the accuracy of a combustor test bed virtual test can be improved.

Description

technical field [0001] The invention relates to the technical field of engine virtual tests, in particular to a virtual test modeling method for a combustion chamber test bench. Background technique [0002] Establishing a virtual test of a turbine engine can reduce the number of physical tests of the combustion chamber, shorten the development cycle of the engine, especially the combustion chamber, and thus greatly reduce the development cost of the turbine transmitter. [0003] However, most of the virtual experiments carried out in the prior art are under ideal conditions, without considering the actual situation in the combustion process. In fact, the actual combustion process in the combustion chamber is a two-phase flow process of gas particles with chemical reactions. Therefore, the aerodynamic and thermal parameters of the combustion chamber, the intake pipe and other components, such as the total pressure, total temperature, flow rate and oil-gas ratio in the combus...

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Problems solved by technology

[0003] However, most of the virtual tests carried out in the prior art are under ideal conditions, without considering the actual situation in the combustion process

In fact, the actual combustion process in the combustion chamber is a two-phase flow process of gas particles with chemical reactions. Therefore, the aerodynamic parameters of the combustion chamber, the intake pipe and other components, such as the total pressure, total temperature, flow rate and oil-gas ratio in the combustion chamber The calculation of such as is more complicated, and the complexity of the calculation is doubled, which puts forward higher requirements for the calculation efficiency of the virtual test.

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