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Parallel Performance of ADPDIS3D—A High Order Multiblock Overlapping Grid Solver for Hypersonic Turbulence



The goal of this paper is to evaluate the parallel performance of a newly developed fluid dynamic flow solver ADPDIS3D. ADPDIS3D is a 3-D variable high order multiblock overlapping grid code in curvilinear geometries. It includes a unified treatment of gas dynamics/MHD (magnetohydrodynamics), multifluid, combustion and nonequilibrium flows. The code is based on low dissipation high-order accurate spatial finite difference methods (Yee et al., 1999; Yee & Sjo¨ green, 2007, 2008) for turbulence with shock computations. Flow sensors are used in an adaptive procedure to analyze the computed flow data and indicate the amount, location and type of builtin shock-capturing numerical dissipation that can be eliminated or further reduced. By design, the flow sensors, spatial base schemes and nonlinear dissipation models are standalone modules. The current version of the code consists of high order central spatial base schemes of order up to 14, and adaptive nonlinear filters of order up to 9. The code also includes the sixth-order central compact scheme with an eighth-order compact filter. Standard shock-capturing schemes and hybrid schemes of order up to nine are included. To further minimize the use of numerical dissipation, the conservative and non-conservative skew-symmetric splitting of the gas dynamics equations (Sjogreen & Yee, 2009; Yee et al., 2000) are included in the code. ADPDIS3D was originally designed for time-accurate simulation of hypersonic turbulent flows, including combustion, plasma, thermal and chemical nonequilibrium flows. Different type and order of spatial base schemes and filter dissipations can be used on different grid blocks.

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