航空发动机变维度总体性能仿真方法研究现状及展望

With the increasing effects of gas turbine components interaction and multidisciplinary coupling, incorporating higher-dimensional factors into zero-dimensional overall performance it is of important role and significance to introduce high-dimensional factors and conduct a variable-dimensional simulation in the zero-dimensional overall performance simulation of aero-engines . The background of variable-dimensional methods is analyzed, the development status of the variable-dimensional method is clarified, and the different technical paths for realizing variable-dimensional simulation are compared and analyzed and the application results of the variable-dimensional hybrid simulation methods are summarized with the inlet, fan/compressor, tail nozzle, and core engine/low-pressure system as specific objects in this paper. The results show that the variable-dimensional simulation method can effectively improve the system-level performance simulation accuracy of the whole machine, for which the autonomous and controllable 0D to 3D program is the basis for implementation. Partial coupling or characteristic correction methods have the most advantages in terms of accuracy, time consumption, flexibility, etc. The research on variable-dimensional performance simulation under the influence of new configuration engines (such as variable cycle engines) and the real working environments (such as rain swallowing) should be focused on.