本文選題：探針支桿 + .級(jí)壓氣機(jī)　； 參考：《推進(jìn)技術(shù)》2017年05期

【摘要】：為了評(píng)估進(jìn)口測(cè)試探針支桿對(duì)壓氣機(jī)氣動(dòng)性能的影響,定常計(jì)算了包含不同直徑、軸向位置、周向位置及形狀的探針支桿的1.5級(jí)壓氣機(jī)特性線。結(jié)果表明,較無進(jìn)口探針支桿的工況,帶探針支桿的壓氣機(jī)特性線整體向左下方偏移。圓柱型支桿較迎風(fēng)面積相同的長條型支桿而言,使壓氣機(jī)特性線衰減更嚴(yán)重;隨支桿直徑增加,壓氣機(jī)特性線偏移量增大,5mm,10mm及20mm的支桿使壓氣機(jī)平均效率分別降低0.8%,1.32%及2.28%;支桿周向位置、軸向位置對(duì)壓氣機(jī)特性線無影響。分析定常及非定常數(shù)值計(jì)算結(jié)果發(fā)現(xiàn),當(dāng)支桿尾跡引起的進(jìn)口氣流角脈動(dòng)位于進(jìn)口導(dǎo)葉不敏感角范圍內(nèi)時(shí),導(dǎo)葉的整流作用使導(dǎo)葉下游壓氣機(jī)性能不受進(jìn)口支桿的影響。
[Abstract]:In order to evaluate the influence of the imported test probe rod on the aerodynamic performance of the compressor, the 1.5 stage compressor characteristic lines with different diameters, axial positions, circumferential positions and shapes were calculated. The results show that the compressor characteristic line with the probe rod is shifted to the lower left than that without the inlet probe rod. The attenuation of the characteristic line of the compressor is more serious than that of the long rod with the same upwind area, and with the increase of the diameter of the rod, The compressor characteristic line offset increased by 5 mm and 10 mm and the 20mm support bar reduced the average compressor efficiency by 0.81.32% and 2.28%, respectively, while the circumferential position and axial position of the supporting rod had no effect on the compressor characteristic line. By analyzing the steady and unsteady numerical results, it is found that when the inlet flow angle pulsation caused by the wake of the supporting rod is within the insensitive angle range of the inlet guide vane, the rectifying action of the guide vane makes the performance of the compressor downstream of the guide vane independent of the inlet branch.
【作者單位】： 南京航空航天大學(xué)能源與動(dòng)力學(xué)院;中國燃?xì)鉁u輪研究院;
【基金】：南京航空航天大學(xué)青年科技創(chuàng)新基金(NS2014023)
【分類號(hào)】：TH45
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本文編號(hào)：2090202