Abstract
Breakup of droplets have been investigated by many researchers. The process of disintegration is influenced on Weber number, Bond number and Laplace number or Reynolds number. We have investigated the deformation and disintegration of small droplets with a large viscosity in a high speed air behind a shock wave. The consequent Weber number is of 20 to 100. Droplets are deformed by the hot air behind a shock wave. For the visualization of droplets, a flash light is used and the photograph are taken by the direct shadowgraph method. The results are analyzed with Weber and Laplace numbers.
