Search Results for author: Lukas Einkemmer

Found 4 papers, 0 papers with code

An exponential integrator/WENO discretization for sonic-boom simulation on modern computer hardware

no code implementations10 Mar 2021 Lukas Einkemmer, Alexander Ostermann, Mirko Residori

Recently a splitting approach has been presented for the simulation of sonic-boom propagation.

Numerical Analysis Numerical Analysis

Efficient adaptive step size control for exponential integrators

no code implementations4 Feb 2021 Pranab Jyoti Deka, Lukas Einkemmer

Traditional step size controllers make the tacit assumption that the cost of a time step is independent of the step size.

Numerical Analysis Numerical Analysis Mathematical Physics Mathematical Physics Optimization and Control

A mass, momentum, and energy conservative dynamical low-rank scheme for the Vlasov equation

no code implementations29 Jan 2021 Lukas Einkemmer, Ilon Joseph

The primary challenge in solving kinetic equations, such as the Vlasov equation, is the high-dimensional phase space.

Numerical Analysis Numerical Analysis Computational Physics

An efficient dynamical low-rank algorithm for the Boltzmann-BGK equation close to the compressible viscous flow regime

no code implementations18 Jan 2021 Lukas Einkemmer, Jingwei Hu, Lexing Ying

In this paper, we propose an efficient dynamical low-rank integrator that can capture the fluid limit -- the Navier-Stokes equations -- of the Boltzmann-BGK model even in the compressible regime.

Numerical Analysis Numerical Analysis Computational Physics

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