Tracking the vortex motion by using Brownian fluid particles

Zhongmin Qian, Yuchun Qiu, Yihuang Zhang

Published 2021-07-23Version 1

In this paper we propose a simple yet powerful vortex method to numerically approximate the dynamics of an incompressible flow. The idea is to sample the distribution of the initial vortices of the fluid flow in question then follows vortex dynamics along Taylor's Brownian fluid particles. The weak convergence of this approximation scheme are obtained for 2D and 3D cases, though only for small time in 3D case. Based on our method, the simulation results are quite attracting.