非轴对称导叶尾迹对低速轴流压气机影响.pdfVIP

24 8 V ol. 24 No. 8 2009 8 Journal of Aerospace Power A ug . 2009 : 1000- 8055( 2009) 08- 1799- 06 刘建勇, 李志平, 陆亚钧, 曾 涛 ( , 10019 1) : , . , ( IGV ) . , , , , . , B 1. 2% , . : ; ; ; : V231. 3 : A Effects of non-axisymmetric IGV wakes on a low speed axial compressor L IU J an-yong , LI Zh- p ng, L U Y a-ju n, ZEN G T ao ( N at onal Key L abo rato ry on A ero- Eng ne, Schoo l o f Jet Pro puls o n, Be j ng Un vers t y of A eronaut cs and A st ronaut cs , Be j ng 100191, Ch na) Abstract: Based on the ax sym metr c w ake m pact exper m ent , several no n- ax sy mmet- r c w ake mpact exper ment s w ere car r ed out . When the num ber and c rcumf erent al pos- t ons of nlet g u de vanes ( IGV) w ere log cal, the w akes of non- ax sym met r c IGV s co uld make benef c al unst eady ex c t at o n on dow nst ream rot or f eld. In these ex per ment s, some su table non- ax symm et r c w ake m pact plans w o rked bet t er t han t he ax sym met r c w ake m- pact plan. A s compared t o t he ax sym metr c w ake m pact plan, t he non- ax sym met r c w ake m pact plan could supply mult-f requency ex c t ng s gnals. In add t on t o the benef c al h g h- frequency s gnal, t he non- ax symm et r c plan B g enerated a low- frequency square-wave ex c t- ng s gnal and som e benef c al secondary s gnals. Based o n t he unst eady cooperat ve flo w the- o ry, t he ex c t ng w akes n non- ax sym met r c plan w ere eas er t o co operat e w t h compl cat ed vort ces n a com pressor, such as clear ance vo r