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libParanumal simulation for 3D flow over a finite fence modeled with the Galerkin-Boltzmann flow equations of gas dynamics (Toelke et al 00). The simulation uses a mix of discretization techniques: Physical space: a 4th order polynomial discontinuous Galerkin spatial discretization with 2M tetrahedral elements. Velocity space discretization: second order Hermite expansion modulating a Maxwellian distribution. Temporal discretization: semi-analytical Runge-Kutta time integrator with adaptive time-step selection. Far field closure: the outer domain non-wall boundaries are wrapped with a multiaxial MPML absorbing layer to absorb outgoing waves. Simulation performed by Ali Karakus using 12 NVIDI