本文選題：高速擴(kuò)壓葉柵 + 射流旋渦��； 參考：《推進(jìn)技術(shù)》2017年11期

【摘要】：為了探究不同攻角下單孔以及雙孔射流旋渦發(fā)生器(VGJs)對高速擴(kuò)壓葉柵氣動性能的影響和作用機(jī)理,采用數(shù)值模擬的方法對柵內(nèi)氣動性能參數(shù)以及端區(qū)流動分布進(jìn)行了較為詳細(xì)的分析。數(shù)值結(jié)果表明:單孔以及同向雙孔射流均具有較好的變攻角特性,隨著攻角的增加控制效果先顯著增加然后略微降低,在2°攻角條件下,VGJs使得總壓損失降低最為明顯,單孔射流達(dá)到11.0%。反向雙孔射流的控制效果較差,在-4°攻角條件下甚至出現(xiàn)了3.9%的總壓損失增長。采用射流旋渦發(fā)生器,射流旋渦(JV)將通道渦分成兩部分,靠近吸力面的次生通道渦(PVⅡ)很快匯入角區(qū),端壁展向渦(SV)消失,吸力面分離被推遲,但吸力面上的展向運(yùn)動顯著增強(qiáng),葉柵通道內(nèi)的二次流動得到有效控制。
[Abstract]:In order to investigate the effect and mechanism of VGJs on the aerodynamic performance of high-speed diffuser cascade at different angles of attack, a single hole and two hole jet vortex generator (VGJs) is proposed. The aerodynamic performance parameters and the end flow distribution in the gate are analyzed in detail by numerical simulation. The numerical results show that both single-hole and codirectional double-hole jets have better characteristics of variable angle of attack. With the increase of angle of attack, the control effect increases significantly and then decreases slightly. VGJs make the total pressure loss decrease most obviously under the condition of 2 擄angle of attack. The single hole jet reaches 11.0. The control effect of the reverse double-hole jet is poor, and the total pressure loss increases by 3.9% under the condition of -4 擄angle of attack. Using a jet vortex generator (JV), the passage vortex is divided into two parts. The secondary channel vortex PVII near the suction surface quickly converges into the corner region, the end wall spanned vortex SVV) disappears, and the suction surface separation is delayed. However, the spanned motion on the suction surface is enhanced significantly, and the secondary flow in the cascade channel is effectively controlled.
【作者單位】： 哈爾濱工業(yè)大學(xué)能源科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金(51306042)
【分類號】：TH45

【相似文獻(xiàn)】

相關(guān)期刊論文 前2條

1 張海燈;吳云;李應(yīng)紅;趙勤;;高速壓氣機(jī)葉柵旋渦結(jié)構(gòu)及其流動損失研究[J];航空學(xué)報(bào);2014年09期

2 王祥鋒;顏培剛;俞李斌;韓萬金;;兩級軸流壓氣機(jī)流場內(nèi)流動分離及旋渦運(yùn)動[J];空氣動力學(xué)學(xué)報(bào);2014年02期

，

本文編號：1895210