Validation of an immersed boundary method for compressible flows

TL;DR

This paper validates an immersed boundary method for compressible flows, demonstrating its accuracy and efficiency across various flow regimes and geometries, with comparisons to classical methods and experimental data.

Contribution

It provides a comprehensive validation of an immersed boundary method for compressible flows, highlighting its accuracy and computational efficiency across diverse test cases.

Findings

Accurate results for subsonic to hypersonic flows.

Effective in steady and unsteady large-eddy simulations.

Reduces computational time compared to traditional methods.

Abstract

This paper sums up some recent validations of an immersed boundary method for compressible flow simulations. It has been already shown that this method is able to provide accurate results without meshing effort around more or less complex geometries. Here, the authors focus on several simple test cases to assess the application range of the method. From subsonic to hypersonic flows, from steady to large-eddy unsteady simulations, in 2D or 3D, results are compared to classical simulations with body-fitted meshes and experiment. Moreover, the use of an efficient Navier-Stokes solver for all the cases is part of the benefit of the approach to provide a CFD solution in a reduced time.