Abstract
Recently, three-dimensional structures of chondrules have been studied using X-ray microtomography. It showed that there are many chondrules which are deformed from a perfect sphere. On the contrary, in the framework of shock-wave heating model, which is one of the most plausible model for chondrule formation, the molten droplet is exposed to the high-velocity rarefied gas flow. The gas drag force also induces a rotation on the droplet. It is naturally expected that the effects of the gas drag force and the rotation deform the droplet. In order to investigate the dynamics of the droplet, we perform three-dimensional hydrodynamic simulations and calculate the deformation of the droplet. We also compare our results with the structures of chondrules measured by the X-ray microtomography.
