Abstract
Optical visualization of interaction between a shock wave and boundary layer in mist has been carried out by using objective light pass filter, by which a perfect shadowgraph can be obtained. The intensity with the filter is proportional to the source density which has a gradient of spatial light diffraction coefficient. Therefore we can obtain a mist density from the image of photograph experimentally obtained. Experimental photograph shows a detailed flow field image. Compression or expansion wave also visualized with the present method. The interaction between a shock wave and thermal boundary layer in mist has been investigated in detail experimentally.
