%0 Journal Article
%T An Experimental Observation of 3-D Scramjet Inlet Flow in a Shock Tunnel<br>激波风洞内超燃冲压发动机三面压缩进气道流场实验观测
%A HUANG Bo
%A LI Zhu-fei
%A YANG Ji-ming
%A LUO Xi-sheng
%A <br>黄舶
%A 李祝飞
%A 杨基明
%A 罗喜胜
%J 实验力学
%D 2012
%I 
%X An experimental observation was carried out for three-dimensional scramjet inlet flow. Six 3-D inlet models with different swept and wedge angles were examined in a M4.5 straight shock tunnel to review the inner flow field of inlet model by means of high speed schlieren photography, oil dot visualization technology and surface tuft method,respectively. As a valuable supplement, 2-D numerical simulation was also conducted. Schlieren photos clearly show the very complex flow structure in the inlet, which is mainly caused by the shock wave-boundary interaction. The shock wave interaction consists of shock waves and viscous separation regions. These phenomena are also confirmed by numerical simulation. Oil dot photos capture the flow patterns near the walls of the inlet. The fin shock, separation line and reattachment line can be identified. According to the experimental results, it is presumed that the interaction of shock wave caused by cowl with the boundary layer over the inlet top and the boundary layer over the sidewall are main flow structures, which deteriorate the flow field in the inlet. Pumping was used to control the separation, and presented some positive results.
%K shock wave-boundary interaction
%K scramjet
%K hypersonic inlet
%K flow visualization<br>激波边界层相互作用
%K 超燃冲压发动机
%K 高超声速进气道
%K 流动显示
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=EB1EEE94DAF205C63966F496F76A4C1B&yid=99E9153A83D4CB11&vid=DB817633AA4F79B9&iid=CA4FD0336C81A37A&sid=EA389574707BDED3&eid=771469D9D58C34FF&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=0