CFDによる遠心圧縮機空力設計

概要

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The influence of impeller geometry on the relative flow field has been studied by means of three dimensional EULER code. Investigated geometric parameters were shroud/hub meridi-onal contour, splitter blade geometry at the splitter leading edge portion and circumferen-tial location of splitter blade. Effects of these parameters on the impeller flow field were examined by varing one parameter at a time while the other parameters were fixed. And it turned out that sudden change of the impeller inlet relative velocities at shroud/hub could be reduced by appropriate shroud/hub contour modifications, and that relative flow field at the splitter leading edge and subsequent flow field could be improved by setting direction of the leading edge of the splitter blade towards the suction side of the main blade and by locating the splitter blade nearer to the suction side of the main blade.
社団法人日本ガスタービン学会の論文
1995-06-10