A Spline-Based Collocation Method for Stokes and Navier-Stokes equations

Jinsil Lee, Jungho Yoon

Published 2023-10-24Version 1

In the paper, we propose a collocation method based on multivariate polynomial splines over triangulation or tetrahedralization for solving Stokes and Navier-Stokes equations. We start with a detailed explanation of the method for the Stokes equation and then extend the study to the Navier-Stokes equations. We shall show that the numerical solution can approximate the exact PDE solution very well over several domains. Then we present several numerical experimental results to demonstrate the performance of the method over the 2D and 3D settings. Also, we apply the IPBM method to our method to find the solution over several curved domains effectively. In addition, we present a comparison with the existing multivariate spline methods in \cite{AL02} and several existing methods to show that the new method produces a similar and sometimes more accurate approximation in a more efficient fashion.