Coupling

The goal of the multi-physics effort is to enable the simulation of the target application. Namely, the simulation of a compressible reacting fluid at hypersonic velocities, including the effects of shock-layer radiation and surface ablation. Furthermore, this group focuses on enabling the infrastructure to perform analyses for the quantification of uncertainty for these coupled problems.

Currently, the group has enhanced an existing reacting, hypersonic flow code provided by NASA to include the shock-layer radiation and ablation models developed by groups in PECOS using a loose coupling scheme. Furthermore, variations of over 300 parameters in the various physics models are being studied to observe the effect on the quantities of interest to inform future UQ efforts.

Future developments will focus on the FIN-S hypersonics code to enable tight coupling of the physics models. This will provide both opportunities for research and development of new algorithms and formulations for hypersonic flow and multi-physics coupling, but also enable adjoint based techniques for verification and uncertainty quantification.

• Loose coupling scheme to enable shock layer radiation and surface ablation within existing hypersonic flow code
• Verification of coupling infrastructure
• Parameter variation analysis on quantities of interest
• Develop tight coupling scheme for radiation and ablation models in FIN-S finite element code
• Explore adjoint-based solution verification techniques
• Development of manufactured solutions for coupled problems
• Adjoint-based UQ for coupled problem