背景型シュリーレン法を用いた鏡面加工された加熱壁面近傍の3次元密度分布の可視化計測の検討

抄録

The Background Oriented Schlieren (BOS) method is an optical visualization technique for flow fields using background images. In recent years, 3D-BOS has been studied to capture the three-dimensional flow by taking simultaneous images from multiple directions. However, in the measurement of 3D density distribution around a heated wall, it is difficult to obtain the necessary refraction data from multiple directions because the wall blocks most of the light rays. In this study, we investigate the possibility of 3D visualization measurement near the heating wall by using the reflection of light from the mirror-finished wall surface.