等离子体合成射流激波/边界层干扰主动流动控制机理研究

项目名称： 等离子体合成射流激波/边界层干扰主动流动控制机理研究

项目编号： No.11502295

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 王林

作者单位： 中国人民解放军国防科技大学

项目金额： 22万元

中文摘要： 激波/边界层干扰主动流动控制可以显著提升超/高超声速飞行器及其动力装置的气动性能，但实际应用和控制效果受到主动流动控制激励器性能的制约。等离子体合成射流兼具有合成射流零质量通量和表面放电等离子体气动激励的优点，在激波/边界层干扰控制方面具有广阔的应用前景。目前国际上采用等离子体合成射流已取得了一定的激波/边界层干扰控制效果，但对具体控制机理尚不清楚。本项目在已有研究基础之上，开展等离子体合成射流激波/边界层干扰控制作用机理研究：通过流动显示、放电测量和光学诊断等手段，分析等离子体合成射流流场特性和放电等离子体特性随时间的演化规律，建立等离子体合成射流工程计算模型。结合数值模拟和风洞实验，分析等离子体合成射流与超声速主流的耦合作用机制；综合分析，获得等离子体合成射流激波/边界层干扰控制机理并实现控制效果优化。本项目研究可为超/高超声速飞行器激波/边界层干扰主动流动控制提供新的技术途径。

中文关键词： 等离子体激励；合成射流；超声速/高超声速流动；激波/边界层干扰；主动控制

英文摘要： Active control of shock-boundary layer interaction (SBLI) can remarkably enhance the aerodynamic performance of supersonic/hypersonic aircrafts and aeroengines, but the practical application and the control effect are limited by the performance of the active flow control actuators. Plasma synthetic jet has the advantages of zero mass flux of synthetic jet and surface plasma actuation, which is promising in the field of SBLI control. At present, some research has been made on SBLI control worldwide, and relevant results have been acquired. However, the mechanism of plasma synthetic jet on SBLI control is still not clear. In this project, according to the preliminary results, the mechanism of the SBLI control will be studied. Through flowfield vision, discharge measurement and optics diagnosis, the characteristics of the plasma synthetic jet flowfield and the plasma are analyzed, plasma synthetic jet engineering computational model is established. With the numerical simulation and wind tunnel experiments, the interaction of the plasma synthetic jet with the supersonic crossflow is investigated, the physical mechanism of the SBLI control by the plasma synthetic jet is discussed and the control effect is optimized. The work mentioned above is expected to provide a new solutions for supersonic/hypersonic SBLI active control.

英文关键词： plasma actuation;synthetic jet;supersonic/hypersonic flow;shok-boundary layer interaction;active control