Scalable Computational Tools for Predicting Fluid-Structure Interactions in Laser Directed-Energy Applications

Robert Nourgaliev | 19-ERD-015

Executive Summary

We will develop the necessary capabilities for simulating laser-driven directed energy physics, including material heating, melting, degradation in the target area, and interaction with external, high-speed fluid flows. This research will significantly impact the field of computational modeling of fluid-structure interactions in the defense application space, as well as laser-based advanced manufacturing, through the development of state-of-the-art scalable algorithms for high-performance computing and tightly coupled multiphysics.

Publications, Presentations, Etc.

Luo, H., et al. 2019. "A Moving Discontinuous Galerkin Finite Element Method for Conservation Laws." 2019 IEEE Aerospace Sciences Meeting, Big Sky, Montana, March 2019. LLNL-CONF-786477.

––– . 2019 "A Moving Discontinuous Galerkin Finite Element Method for Conservation Laws." MultiMat2019: 9th International Conference on Numerical Methods for Multi-Material Fluid Flow, Trento, Italy, September 2019. LLNL-ABS-779579.

Nourgaliev, R., et al. 2019. "High-Order Fully Implicit Solver for All-Speed Fluid Dynamics." Shock Waves 29(5): 651-689. doi: 10.1007/s00193-0118-0871-8. LLNL-JRNL-745590.

––– . 2019 "Preconditioning a Newton-Krylov Solver for All-Speed Melt Pool Flow Physics." Journal of Computational Physics 397: 108847. doi: 10.1016/ LLNL-JRNL-745515.

Weston, B. and R. Nourgaliev, 2019. "p-Multigrid Block Reduction Preconditioning Strategies for Scalable High-Order All-Speed Compressible Flow Physics." Coupled 2019: VIII International Conference On Coupled Problems in Science and Engineering, Barcelona, Spain, June 2019. LLNL-ABS-766341.