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- W2000815672 abstract "In this work a patched grid technique is proposed with the aim of increasing the exibility and eciency of high-order nite dierence aeroacoustic computation. The patched characteristic interface condition (CIC) allows arbitrarily positioned non-matching grid points along each side of the internal block boundaries. The work extends the CIC originally proposed to treat the problem of grid singularity associated with structured grids and high-order nite dierence schemes (FDSs). A simple method of generalizing the original CIC theory is also presented. The new interface condition is implemented into a high-order computational aeroacoustics (CAA) solver which solves either the Euler or Navier-Stokes equations. The patch algorithm makes use of a high-order optimized interpolation method to approximate the characteristic convection terms along the non-matching block interface. The result is an interface condition that provides better management of cell distribution in the computational domain whilst providing a treatment to the grid singularity problem associated with complex geometries. Several test cases are used to demonstrate the exibility of the new interface condition and to investigate various parameters. The computed results are shown to be in excellent agreement with exact solutions." @default.
- W2000815672 created "2016-06-24" @default.
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- W2000815672 date "2009-05-11" @default.
- W2000815672 modified "2023-10-05" @default.
- W2000815672 title "Patched Characteristic Interface Condition for High-Order Aeroacoustic Computation" @default.
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- W2000815672 doi "https://doi.org/10.2514/6.2009-3112" @default.
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