Application of the hemlab algorithm to a delta wing geometry and a 5th generation fighter model

Abstract

This work presents delta wing simulations using two different geometries: Delta wing geometry provided in the International Workshop on High-Order CFD Methods and the Sydney Standard Aerodynamic Models (SSAM) for a generic fifth-generation high-performance aircraft. This study aims to accurately compute the lift and drag coefficients of each model and to generate low speed, high angle of attack flows for delta wings in order to obtain a further insight into vortex dominated flow physics. The calculations are carried out utilizing a vertex based finite-volume algorithm HEMLAB which is combined with an anisotropic mesh adaption library pyAMG from INRIA in order to further increase its computational efficiency. The main purpose of this study is to validate the HEMLAB solver and use the anisotropic mesh adaptation method with different adaptation functions to get more accurate solutions with optimized mesh resolution in necessary regions.