3D Inverse Design Method Coupling with Flowfield for Compressor Blade

doi:10.3901/JME.2017.20.184

Abstract

Abstract: For the demand for development of the high-performance compressor used in fields such as aeroengine, an inverse design method for three-dimensional compressor blade is studied, created and validated. The pressure on the blade surface is used as the prescribed parameter. The permeable wall boundary condition is constructed basing on the characteristic wave theory for non-viscous flow, with which the flow field matching the prescribed pressure is solved. The blade geometry is solved by tracing streamline. Through the analysis on sensitivity of the surface correction system to the flow field parameters, the measures including mesh reconstruction for solving profile and relaxation for the prescribed pressure distribution are put forward to reduce the dependence on the calculation precision of flow field. The accuracy of the inverse design systems is improved without increasing design time and computational cost. The key principles of the inverse method and the measures reducing errors are verified by varieties of testing cases. The results show that the aerodynamic design of axial flow compressor blade can be done accurately and efficiently through the inverse method proposed.

Key words: aerodynamic design, aeroengine, axial compressor, boundary conditions, inverse method, streamline tracing

CLC Number:

TK474

CHEN Jie, SUN Li, MA Wenxiao, HUANG Guoping. 3D Inverse Design Method Coupling with Flowfield for Compressor Blade[J]. Journal of Mechanical Engineering, 2017, 53(20): 184-191.

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