Stagnation point heat flux characterization under numerical error and boundary conditions uncertainty

Michele Capriati (1, 2) , Andrea Cortesi (1) , Thierry E. Magin (2) , Pietro Marco Congedo (1)

1 PLATON - Uncertainty Quantification in Scientific Computing and Engineering
2 VKI - von Karman Institute for Fluid Dynamics

The numerical simulation of hypersonic atmospheric entry flows is a challenging problem. Prediction of quantities of interest, such as surface heat flux and pressure, is strongly influenced by the mesh quality using conventional second-order spatial accuracy schemes, while depending on the boundary conditions, which generally suffer from uncertainty. This paper explores these two aspects, illustrating a CFD study on the forebody of the EXPERT vehicle of the European Space Agency employing the US3D solver.

Mots clés: atmospheric entry flows; uncertainty quantification; surrogate model; numerical error

Domaines: Dynamique des Fluides [physics.flu-dyn]

Michele Capriati, Andrea Cortesi, Thierry E. Magin, Pietro Marco Congedo. Stagnation point heat flux characterization under numerical error and boundary conditions uncertainty. European Journal of Mechanics - B/Fluids, 2022. ⟨hal-03707319v2⟩