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A Grid-free Central Scheme for Inviscid Compressible4 Flows

机译:用于IncIscid Compressible4流动的无网总方案

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A grid-free central scheme for inviscid compressible flows is presented here. The space derivatives in the governing equations are discretized using the least squares minimization of the error in a Taylor series approximation. The discretization is for any arbitrary cloud of points with full stencil support. A new grid-free central scheme is formulated based on convective - pressure splitting using the mid-points of the lines connecting each point to its neighbours for introducing artificial viscosity. The numerical dissipation is reduced due to the modified eigenvalues in the convective - pressure splitting together with a diffusion regulator based on the jump in the Mach number. The results obtained for standard test cases in two dimensions with first and second order accuracy are presented.
机译:这里介绍了无粘性可压缩流量的无电网中央方案。控制方程中的空间衍生物使用泰勒级近似值中的误差最小化的最小平方离散化。离散化适用于具有完整模板支持的任何任意点云。使用将每个点连接到其邻居的线的中点,基于对流 - 压力分裂来配制新的无网总方案,用于引入人工粘度。由于与马赫数中的跳跃在马赫数中的跳跃和扩散调节器一起减少了数值耗散。提出了具有第一和二阶精度的两个维度的标准测试用例获得的结果。

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