利用激光片光技术进行双三角翼剖面流动显示研究

进行双三角翼翼面流动显示研究的目的是为了揭示前、后翼脱体涡的干扰机理和详细结构 ,进而达到控制表面涡分离的目的 ,并为计算流体力学建立数学模型提供依据。介绍了采用激光片光技术在风洞中进行双三角翼剖面流动显示研究的方法和主要结果。研究表明 ,在较大攻角下 ,由于后翼涡的强度远远超过前翼涡的强度 ,后翼涡对前翼涡的诱导作用比前翼涡对后翼涡的诱导作用强 ,最终两涡将合并在一起 ,成为单一的旋涡。试验给出了很好的涡结构瞬态流动显示图片 ,两对涡的干扰合并明显可见 ,这对分析双三角翼涡的合并和破碎机理以及建立计算模型均有重要意义。

The flow field visualization about the sections of double delta-wing by laser sheet technology

The purpose of flow visualization research of sections in double delta wing is to uncover the mechanism of vortex interference and structure,from this research,we can control the vortex and provide lasis for constructing numerical model. In this paper, the laser sheet technology is used to research the flow visualization of sections of double delta wing ,and some important results are introduced. From these results,we can see that two vortexes change to one vortex because the strength of vortex position relative to leading-edge is more intensity than that of vortex position relative to trailing-edge. Some vortical images are achieved in this test. These research results are very important for double delta wing flow research and valuable to construct the numerical model.