CAJ | 학술논문

通过实施高负荷压气机叶栅叶片表面流场显示实验和气动参数测量，针对前缘形态对叶栅通道内分离流动和叶型损失的影响展开了研究。实验采用两种前缘形状的高负荷叶型，在弦长雷诺数1．5×105～2．0×105之间进行。结果表明，该叶型吸力面流动分离由前缘分离、中部分离、尾缘开式分离组成；圆弧前缘相对椭圆弧前缘增厚了边界层起始动量厚度，进而影响了边界层向下游的发展，在实验条件下Re小于1．5×105时获得更小的总压损失；Re进一步增大，椭圆弧前缘因可抑制前缘分离和尾缘附近开式分离进而降低损失优势凸显。
통과실시고부하압기궤협책협편표면류장현시실험화기동삼수측량，침대전연형태대협책통도내분리류동화협형손실적영향전개료연구。실험채용량충전연형상적고부하협형，재현장뢰낙수1．5×105～2．0×105지간진행。결과표명，해협형흡력면류동분리유전연분리、중부분리、미연개식분리조성；원호전연상대타원호전연증후료변계층기시동량후도，진이영향료변계층향하유적발전，재실험조건하Re소우1．5×105시획득경소적총압손실；Re진일보증대，타원호전연인가억제전연분리화미연부근개식분리진이강저손실우세철현。
A experimental study has been conducted to characterize the influence of leading edge geometry, Reynolds number on suc-tion side separation of the high lift compressor cascade profile.Tests have been conducted in a low-speed linear compressor cascade at Reynolds numbers between 1.0 ×105 to 2.0 ×105 .Separation on suction side of high lift profile can be divided into three categories:leading edge separation, middle section separation and trailing edge open-separation.Circular arc and elliptic arc leading edge was considered, the measurement results indicated that circular leading edge geometry has advantage at Reynolds number less than 1.5 × 105 with lower profile loss, but elliptic arc profile has a smaller leading edge separation bubble and open-separation area at Reynolds number large than 1.5 ×105 ~2.0 ×105 which was more close to compressors design point.