A Numerical Study on the Thermocapillary Migration of Droplet under Microgravity with Periodic Thermal Boundaries by Front Tracking Method

This paper mainly studied the thermocapillary migration of deformable droplets induced by periodic temperature boundary under microgravity conditions. The Finite-Difference/Front-Tracking (FD/FT) Method was used to solve Navier-Stokes equation coupled with energy equation, and Continuum Surface Force (CSF) model simplify surface tension phase interface. results showed that maximum droplet velocity increased increase amplitude. And cycle period became shorter angular frequency. In 1/4 cycle, initial movement time decreased phase. If reversed, direction changed. With Reynolds number (Re), tended maintain its motion inertia.