On the collision of a moving droplet against a moving particle with heat transfer

Abstract

A Moving droplet impacting a moving particle has been investigated numerically and experimentally. However, the collision with heat transfer is still absent. Therefore, this paper presents a moving droplet impacting a moving particle with heat transfer using the lattice Boltzmann method coupled with a modified immersed boundary method. The influence of Prandtl number (0.1 ≤ Pr ≤ 10) and Grashof number (−100 ≤ Gr ≤ 100) are taken into account. The results show that the vertical velocity of the particle (Uz) grows up against the increment of Pr and Gr. Uz has three stages based on Pr and Gr ≥ 0. And for Gr = −100, Uz is classified into four stages. Especially, for the last stage (at that time, the droplet separates from the particle), Uz varies slightly.