Vertical structure of a supernova-driven turbulent, magnetized interstellar medium

…, LM Haffner, C Klingenberg, K Waagan - The Astrophysical …, 2012 - iopscience.iop.org
Stellar feedback drives the circulation of matter from the disk to the halo of galaxies. We
perform three-dimensional magnetohydrodynamic simulations of a vertical column of the …

A positive MUSCL-Hancock scheme for ideal magnetohydrodynamics

K Waagan - Journal of Computational Physics, 2009 - Elsevier
We present a highly robust second order accurate scheme for the Euler equations and the
ideal MHD equations. The scheme is of predictor–corrector type, with a MUSCL scheme …

A robust numerical scheme for highly compressible magnetohydrodynamics: Nonlinear stability, implementation and tests

K Waagan, C Federrath, C Klingenberg - Journal of Computational Physics, 2011 - Elsevier
The ideal MHD equations are a central model in astrophysics, and their solution relies upon
stable numerical schemes. We present an implementation of a new method, which …

The immuneML ecosystem for machine learning analysis of adaptive immune receptor repertoires

…, C Kanduri, R Kompova, N Vazov, K Waagan… - Nature Machine …, 2021 - nature.com
Adaptive immune receptor repertoires (AIRR) are key targets for biomedical research as they
record past and ongoing adaptive immune responses. The capacity of machine learning (…

A multiwave approximate Riemann solver for ideal MHD based on relaxation. I: theoretical framework

F Bouchut, C Klingenberg, K Waagan - Numerische Mathematik, 2007 - Springer
We present a relaxation system for ideal magnetohydrodynamics (MHD) that is an extension
of the Suliciu relaxation system for the Euler equations of gas dynamics. From it one can …

A multiwave approximate Riemann solver for ideal MHD based on relaxation II: numerical implementation with 3 and 5 waves

F Bouchut, C Klingenberg, K Waagan - Numerische Mathematik, 2010 - Springer
In the first part of this work Bouchut et al. (J Comput Phys 108:7–41, 2007) we introduced an
approximate Riemann solver for one-dimensional ideal MHD derived from a relaxation …

Generating random earthquake events for probabilistic tsunami hazard assessment

RJ LeVeque, K Waagan, FI González, D Rim… - Global Tsunami Science …, 2017 - Springer
To perform probabilistic tsunami hazard assessment for subduction zone earthquakes, it is
necessary to start with a catalog of possible future events along with the annual probability of …

Numerical comparison of Riemann solvers for astrophysical hydrodynamics

C Klingenberg, W Schmidt, K Waagan - Journal of Computational Physics, 2007 - Elsevier
The idea of this work is to compare a new positive and entropy stable approximate Riemann
solver by Francois Bouchut with a state-of the-art algorithm for astrophysical fluid dynamics. …

High order well-balanced finite volume schemes for simulating wave propagation in stratified magnetic atmospheres

…, AD McMurry, S Mishra, NH Risebro, K Waagan - Journal of …, 2010 - Elsevier
Wave propagation in idealized stellar atmospheres is modeled by the equations of ideal
MHD, together with the gravity source term. The waves are modeled as small perturbations of …

Approximate Riemann solvers and robust high-order finite volume schemes for multi-dimensional ideal MHD equations

…, S Mishra, NH Risebro, K Waagan - Communications in …, 2011 - cambridge.org
We design stable and high-order accurate finite volume schemes for the ideal MHD equations
in multi-dimensions. We obtain excellent numerical stability due to some new elements in …