【摘要】：周向偏距是壓氣機串列葉柵設(shè)計的一個重要參數(shù),選擇合理的周向偏距需要兼顧葉柵設(shè)計點和非設(shè)計點性能,為此本文采用數(shù)值模擬方法,研究五種不同周向偏距的串列葉柵在設(shè)計點和近喘點工況下的總體性能和流場細節(jié)。研究結(jié)果表明,在設(shè)計點工況下,增大周向偏距葉柵損失減小,出口氣流角隨周向偏距的變化相對較小;在近喘點工況下,葉柵損失隨著周向偏距的增大先減小后增大,出口氣流角隨著周向偏距增大而最大有約9°的軸向偏離。因此兼顧壓氣機設(shè)計點和非設(shè)計點性能時該葉柵的最佳周向偏距設(shè)計值在0.67~0.80之間。
[Abstract]:Circumferential offset is an important parameter in cascade design of compressor. In order to select reasonable circumferential offset, the performance of cascade design point and non-design point should be taken into account. In this paper, numerical simulation method is used. The overall performance and flow field details of five cascades with different circumferential deviations at design point and near panting point were studied. The results show that, at the design point, the loss of the cascade with increasing circumferential offset decreases, and the outlet flow angle changes slightly with the circumferential offset. Under the condition of near panting point, the cascade loss decreases first and then increases with the increase of circumferential deviation, and the outlet flow angle increases with circumferential deviation, and the maximum axial deviation is about 9 擄. Therefore, the optimum circumferential offset design value of the cascade is between 0.67 and 0.80 when the performance of compressor design point and non-design point is taken into account.
【作者單位】： 上海交通大學航空航天學院;
【基金】：國家自然科學基金(No.51576124)
【分類號】：TH45

【相似文獻】

相關(guān)期刊論文 前2條

1 莊森;張開飛;馬世榜;虞啟輝;覃壽同;張紹林;鄧秋超;;等偏距同轉(zhuǎn)向空間RCCR機構(gòu)的位移特性[J];機械傳動;2010年02期

2 ;[J];;年期

，

本文編號：2331068