87 citations · 218 across the 13 of their papers we have counts for
7 papers · 1 filter
Numerical schemes for a multi-species BGK model with velocity-dependent collision frequency
Jeffrey Haack, Cory Hauck, Christian Klingenberg +2
We consider a kinetic description of a multi-species gas mixture modeled with Bhatnagar-Gross-Krook (BGK) collision operators, in which the collision frequency varies not only in t…
A fast spectral method for the Boltzmann collision operator with general collision kernels
Irene M. Gamba, Jeffrey R. Haack, Cory D. Hauck +1
We propose a simple fast spectral method for the Boltzmann collision operator with general collision kernels. In contrast to the direct spectral method \cite{PR00, GT09} which requ…
A conservative spectral method for the Boltzmann equation with anisotropic scattering and the grazing collisions limit
Irene M. Gamba, Jeffrey R. Haack
We present the formulation of a conservative spectral scheme for Boltzmann collision operators with anisotropic scattering mechanisms to model grazing collision limit regimes appro…
A Spectral-Lagrangian Boltzmann Solver for a Multi-Energy Level Gas
Alessandro Munafo, Jeffrey R. Haack, Irene M. Gamba +1
In this paper a spectral-Lagrangian method for the Boltzmann equation for a multi-energy level gas is proposed. Internal energy levels are treated as separate species and inelastic…
A hybrid OpenMP and MPI implementation of a conservative spectral method for the Boltzmann equation
Jeffrey Haack
We demonstrate the implementation of a hybrid OpenMP and MPI parallelization of a conservative spectral method for the Boltzmann equation originally developed by Gamba and Tharkabh…
High Performance Computing with a Conservative Spectral Boltzmann Solver
Irene M. Gamba, Jeffrey R. Haack
We present new results building on the conservative deterministic spectral method for the space inhomogeneous Boltzmann equation developed by Gamba and Tharkabhushaman. This approa…
Conservative Deterministic Spectral Boltzmann Solver Near the Grazing Collisions Limit
Irene M. Gamba, Jeffrey R. Haack
We present new results building on the conservative deterministic spectral method for the space homogeneous Boltzmann equation developed by Gamba and Tharkabhushaman. This approach…