A-9 翼列内を伝播する音波の数値解析(空力I,一般講演)

概要

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In this paper, two cases were analyzed. Firstly, a case when an acoustic wave propagates through a cascade with flat plate blades was analyzed by our numerical code based on Euler equation. The results were compared with those solved by a theoretical method, and showed good agreement with theoretical one qualitatively. Secondly, for the realistic case, fan noise generation and propagation was simulated by unsteady Reynolds averaged Navier-Stokes code. Some of the authors had analyzed generation and propagation of fan noise caused by rotor-stator interaction before. In their results, acoustic wave propagation through rotor blades could not be simulated clearly because the grid density around the rotor blades was not sufficient for capturing the acoustic wave propagating through. In the present study, the grid density has been improved to capture the acoustic wave propagation through the rotor, and the acoustic wave propagating to upstream of the rotor blade row has been captured.
公益社団法人日本ガスタービン学会の論文
2006-10-01