某开口回流式低速风洞固定地板结构优化  

Structural Optimization of Fixed Floor of Certain Type Low Speed Wind Tunnel with Open Reflux

作　　者：孙福振[1] 刘江涛[1] 赵佳锡 傅澔 Sun Fuzhen;Liu Jiangtao;Zhao Jiaxi;Fu Hao(Low Speed Institute,China Aerodynamics Research and Development Center,Mianyang 622722,China)

机构地区：[1]中国空气动力研究与发展中心低速空气动力研究所,四川绵阳622722

出　　处：《兵工自动化》2023年第10期25-28,39,共5页Ordnance Industry Automation

摘　　要：针对低速风洞固定地板对地效试验数据质量和试验效率的影响,采用CFD计算方法优化设计固定地板的吸除缝及其整流前缘的结构参数。基于非接触测控方式,设计固定地板随动密封装置;在低速风洞中,通过试验对优化后固定地板上方的风洞落差系数及附面层厚度进行测量。结果表明:在常用风速下,优化后固定地板模型区域的附面层厚度能够满足地面效应实验的要求。In view of the influence of the fixed floor of low speed wind tunnel on the data quality and test efficiency of ground effect test,the structural parameters of the suction seam and the fairing leading edge of the fixed floor are optimized by CFD calculation method.Based on the non-contact measurement and control method,a fixed floor follow-up sealing device was designed.In the low-speed wind tunnel,the wind tunnel drop coefficient and boundary layer thickness above the optimized fixed floor were measured through the test.The results show that the boundary layer thickness of the optimized fixed floor model can meet the requirements of the ground effect experiment under the common wind speed.

关 键 词：低速风洞 固定地板 附面层吸除缝 随动密封 地效试验 

分 类 号：V211.74[航空宇航科学与技术—航空宇航推进理论与工程]