本文關(guān)鍵詞： 超燃燃燒室 菱形孔 摻混增強 數(shù)值模擬　出處：《彈箭與制導(dǎo)學報》2016年03期 　論文類型：期刊論文

【摘要】：為分析相同面積條件下菱形孔的不同長寬比、不同偏轉(zhuǎn)角度對超燃燃燒室中的流動特性影響,對低動壓噴射的超聲速流場進行了數(shù)值模擬。研究結(jié)果表明:在計算的6種長寬比構(gòu)型中,長寬比為5構(gòu)型燃料穿透能力和摻混特性最強,但此時對稱面上總壓損失變大;在計算的3種偏轉(zhuǎn)角構(gòu)型中,偏轉(zhuǎn)角度為30°構(gòu)型的燃料摻混特性和燃料的穿透能力最強,但此構(gòu)型在遠流場處抬升能力變?nèi)?羽流質(zhì)量中心高度出現(xiàn)下降。
[Abstract]:In order to analyze the effect of different aspect ratio and deflection angle of diamond hole on the flow characteristics of the combustion chamber under the same area. Numerical simulation of supersonic flow field of low hydrodynamic injection is carried out. The results show that, of the six configurations calculated, the aspect to width ratio of 5 configuration is the best, and the penetration ability and mixing characteristics of the fuel are the strongest. However, the total pressure loss on the symmetric surface becomes larger. Among the three deflection angle configurations calculated, the fuel mixing characteristics and the fuel penetration ability of the 30 擄configuration are the strongest, but the uplift capacity of the fuel is weak at the far flow field, and the height of the plume mass center decreases.
【作者單位】： 空軍工程大學防空反導(dǎo)學院;
【基金】：航空科學基金(20130196004)資助
【分類號】：V235.21
【正文快照】： 0引言超燃沖壓發(fā)動機作為高超聲速發(fā)動機最為理想的動力裝置之一,其技術(shù)是目前各國研究的關(guān)鍵技術(shù)[1_2]。由于超聲速入口氣流速度較快,摻混氣體在燃燒室停留時間非常短,超燃燃燒室內(nèi)的燃料摻混成為燃燒室研究的難點[3。壁面射流由于結(jié)構(gòu)簡單、總壓損失小被很多研究者青睞。，

本文編號：1455693