Analysis and Selection of Test Cases for Validating 6DOF Dynamic Mesh Technique

Abstract

This study focuses on the selection of examples to evaluate a numerical mesh movement strategy, aimed at validating the development of a newly proposed technique. The method’s reliability is assessed through various test cases, verifying its compliance with the Geometric Conservation Law (GCL), a necessary and sufficient condition to ensure the numerical stability of the method. Then, the accuracy is tested against known benchmark problems with analytical or experimental results. The selected cases include 2D geometries, cover transient Taylor-Green vortices, a cylinder undergoing simultaneous translation and rotation, and the oscillatory motion of a NACA0012 airfoil. These benchmark cases provide a comprehensive validation of the proposed technique’s performance and stability, facilitating the development of future dynamic mesh strategies.