# Kinetics & BEM on the Saar

## June 4 - 7, 2019

### Saarland University, Saarbrücken, Germany

organised by Sergej Rjasanow

### Tuesday, June 4

 8:00 - 9:00 Registration 9:00 Opening 9:15 - 10:00 Kazuo AokiShock-wave structure for a polyatomic gas with large bulk viscosity 10:00 - 10:30 Martin GeierAero-acoustic simulation with the cumulant lattice Boltzmann method: application to an organ pipe Coffee break 11:00 - 11:45 Ernst P. Stephanhp-version boundary elements for the wave equation 11:45 - 12:15 Jakub StocekOptimal operator preconditioning for pseudodifferential boundary problems 12:15 - 12:45 Daniel SeibelFast boundary element methods for the wave equation Lunch break 14:15 - 15:00 Wolfgang L. WendlandIntegral equations for the Darcy-Forchheimer-Brinkman system 15:00 - 15:30 Raphael WatschingerFast Directional Matrix-Vector Multiplications - Algorithm and Parameter Study 15:30 - 16:00 Lászlo Levente TóthHierarchical $$\textbf{H}(\text{div})$$ basis functions and universal matrices for curvilinear finite elements Coffee break 16:30 - 17:15 Roland Duduchava$$\Gamma$$-convergence and shell equations 17:15 - 17:45 Darya ApushkinskayaThin obstacle problem: error estimates for solutions Reception

### Wednesday, June 5

 9:00 - 9:45 Naoshi NishimuraSolution of eigenvalue problems with BEMs with applications to stability analysis of time domain BEMs for the wave equation 9:45 - 10:15 André BuchauSmart application of boundary element methods in engineering and science 10:15 - 10:45 Ryota MisawaA well-conditioned boundary integral equation for transmission problem of Helmholtz' equation Coffee break 11:15 - 12:00 Hans BabovskyOn local kinetic models for fluid flows - Boltzmann vs. BGK 12:00 - 12:30 Niclas BernhoffHalf-space problems in the kinetic theory of gases 12:30 - 13:00 Gerhard KitzlerA spatial discontinuous Galerkin method with rescaled velocities for the Boltzmann equation 16:00 Excursion

### Thursday, June 6

 9:00 - 9:45 Irene M. GambaMulti-component gas system model: the mixing of mixtures 9:45 - 10:15 Giovanni ManfrediWigner-Maxwell and Vlasov-Maxwell equations for particles with spin 10:15 - 10:45 Torsten KeßlerVlasov-Poisson system tackled by particle simulation utilising Boundary Element Methods Coffee break 11:15 - 12:00 Olaf Steinbach30 years in boundary element methods. When it all began ... Lunch break 13:30 - 14:15 Eric SonnendrückerDerivation of the gyrokinetic model based on a variational principle 14:15 - 14:45 Beatrice SignorelloSharp decay estimates and $$L^2$$ -propagator norm for Fokker-Planck equations with linear drift 14:45 - 15:15 Andrea BondesanA numerical scheme for the multi-species Boltzmann equation in the diffusion limit: well-posedness and main properties Coffee break 15:45 - 16:30 Sergey E. MikhailovBoundary-Domain Integral Equations for Stokes and Brinkman PDE Systems with Variable Coefficients in $$L_p$$-based Spaces 16:30 - 17:00 Maximilian BauerLow-rank Approximations for Discretised Boundary Integral Operators via an Adaptive Matrix-Vector Multiplication Scheme 18:30 Workshop Dinner

### Friday, June 7

 9:00 - 9:45 Ulrich LangerSpace-Time Finite Element Methods for Parabolic Initial-Boundary Value Problems 9:45 - 10:15 Alexander LeichnerA Contact Algorithm for Voxel-based Meshes using Implicit Boundary Representations 10:15 - 10:45 Sudarshan TiwariSemi-Lagrangian scheme with a meshfree reconstruction for the BGK model of the Boltzmann equation Coffee break 11:15 - 12:00 Mario BebendorfInterlaced construction and solution of non-local discretisations 12:00 - 12:30 Andreas A. BuchheitNumerical Study of Structural Phase Transitions in the Frenkel-Kontorova Model with Long-Range Interactions utilising Branch-and-Cut Algorithms Closing