B-10 軸流多段圧縮機における非定常流れの影響(空力・圧縮機,一般講演)

概要

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As a first step in practical application of virtual rig test, in present work, a full unsteady multistage simulation was performed for a 6-stage transonic axial compressor at design point. A steady multistage simulation was also performed and compared with the results of the unsteady simulation to clarify the unsteady flow effects. Comparison of overall performance, stage matching, and inter stage performance with measured test data showed that the unsteady multistage simulation could predict the performance reasonably. It was also demonstrated that, at design point, the steady multistage simulation could predict the stage matching at the same level as the unsteady multistage simulation. To clarify the effects of the unsteady flow in a multistage compressor, the pressure loss by unsteady wake interaction was investigated specifically at the inter-blade passage or down stream blade rows. Some issues in the predictive ability of the unsteady multistage simulation were newly found in the spanwise mixing phenomena.
公益社団法人日本ガスタービン学会の論文
2009-10-21