B-2 遠心圧縮機のサージ限界流量低減法に関する研究(空力I,一般講演)

概要

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An experimental and numerical study on the surge limits of a turbocharger compressor was done. Firstly, we developed an effective casing treatment which has curved wall cavity. Secondly, we tried to use variable inlet guide vane together with the casing treatment. They made synergistic effect on reducing the surge flow rate compared with using them separately. The surge flow rate was 40% less than that of the casing treatment at pressure ratio of 2.5, which was 55% less than that of conventional compressor (without casing treatment) under the condition of VIGV setting angle 80deg. CFD analysis showed that the reversed flow through the tip clearance at surge flow rate was prevented by using of the casing treatment and the variable inlet guide vane.
社団法人日本ガスタービン学会の論文
2004-10-01