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- W569446138 abstract "In the applications of computational aeroacoustics (CAA) involving far-field noise predictions, the most common solution strategy is the hybrid method which combines a computational fluid dynamics (CFD) solver for the sound source field with an acoustic solver for the acoustic far-field. Hybrid CAA methods provide flexibility to select the most appropriate methods to compute the sound source and the acoustic fields, respectively, to suit various aeroacoustic problems. The present study reports the development of a hybrid large-eddy simulation (LES)-acoustic analogy method to effectively predict the noise of viscous flow over complex geometries. With complex geometries, difficulties arise with numerical methods based on body fitted grids. Generating good quality body fitted grids around complex geometries is challenging and time-consuming. Alternatively, numerical methods based on non-body conformal grids can deal with bodies of almost any arbitrary shape. Although the present research was initially motivated for CAA applications, most of the contributions and the novelty of the work is in the development of efficient, easy-to-implement and more accurate non-body conformal methods that can be used for flow over complex geometries. To date, most of the listed work on non-body conformal methods is applied to incompressible flows. The use of non-body conformal methods for compressible turbulent flows is still rare and immature. Two non-body conformal grid methods are developed and assessed in this work: the ghost-cell based immersed boundary method (GC-IBM) and the ghost-cell based cut-cell method (GC-CCM). In both methods, the boundary conditions on the immersed boundary are enforced through the use of “ghost cells” located inside the solid body. Variables on these ghost cells are computed using linear interpolation schemes. The implementation using GC-IBM is simpler; however, the exact shape of the fluid cells in the vicinity of the solid boundary is not detailed, which results in the loss or gain of mass and momentum. As such, sufficiently refined meshing is required in the vicinity of the solid boundary to mitigate the error on mass conservation. The implementation using GC-CCM requires more work; however, the underlying conservation laws is guaranteed by introducing “cut cells”. A cell-merging approach is used to address the small-cell problem associated with" @default.
- W569446138 created "2016-06-24" @default.
- W569446138 creator A5033028873 @default.
- W569446138 date "2015-04-17" @default.
- W569446138 modified "2023-09-27" @default.
- W569446138 title "Non-Body Conformal Grid Methods for Large-Eddy Simulations of Compressible Flows and their Applications in Computational Aeroacoustics" @default.
- W569446138 cites W108247611 @default.
- W569446138 cites W1240171986 @default.
- W569446138 cites W1555627060 @default.
- W569446138 cites W1568523411 @default.
- W569446138 cites W1656028269 @default.
- W569446138 cites W1963793766 @default.
- W569446138 cites W1966848757 @default.
- W569446138 cites W1967759243 @default.
- W569446138 cites W1971293215 @default.
- W569446138 cites W1972928271 @default.
- W569446138 cites W1973481688 @default.
- W569446138 cites W1975456273 @default.
- W569446138 cites W1975943852 @default.
- W569446138 cites W1977912657 @default.
- W569446138 cites W1978665867 @default.
- W569446138 cites W1981524462 @default.
- W569446138 cites W1984426476 @default.
- W569446138 cites W1984813164 @default.
- W569446138 cites W1984965649 @default.
- W569446138 cites W1989075469 @default.
- W569446138 cites W1989938031 @default.
- W569446138 cites W1994098079 @default.
- W569446138 cites W1996235275 @default.
- W569446138 cites W1997015953 @default.
- W569446138 cites W1997654684 @default.
- W569446138 cites W1997815093 @default.
- W569446138 cites W1999921738 @default.
- W569446138 cites W2003168818 @default.
- W569446138 cites W2005002779 @default.
- W569446138 cites W2007077624 @default.
- W569446138 cites W2007809012 @default.
- W569446138 cites W2007845513 @default.
- W569446138 cites W2010667743 @default.
- W569446138 cites W2012645756 @default.
- W569446138 cites W2015350864 @default.
- W569446138 cites W2023457940 @default.
- W569446138 cites W2025610129 @default.
- W569446138 cites W2025700795 @default.
- W569446138 cites W2028441661 @default.
- W569446138 cites W2032966402 @default.
- W569446138 cites W2035436883 @default.
- W569446138 cites W2036579531 @default.
- W569446138 cites W2042760803 @default.
- W569446138 cites W2043057066 @default.
- W569446138 cites W2050392056 @default.
- W569446138 cites W2054638849 @default.
- W569446138 cites W2054662916 @default.
- W569446138 cites W2055306152 @default.
- W569446138 cites W2055940338 @default.
- W569446138 cites W2055997949 @default.
- W569446138 cites W2056570045 @default.
- W569446138 cites W2061721381 @default.
- W569446138 cites W2063701273 @default.
- W569446138 cites W2064370164 @default.
- W569446138 cites W2065582788 @default.
- W569446138 cites W2068056613 @default.
- W569446138 cites W2070912498 @default.
- W569446138 cites W2072844193 @default.
- W569446138 cites W2075842486 @default.
- W569446138 cites W2078644903 @default.
- W569446138 cites W2080202186 @default.
- W569446138 cites W2080516591 @default.
- W569446138 cites W2080558414 @default.
- W569446138 cites W2085623372 @default.
- W569446138 cites W2086155676 @default.
- W569446138 cites W2088661126 @default.
- W569446138 cites W2091312969 @default.
- W569446138 cites W2091493188 @default.
- W569446138 cites W2092284897 @default.
- W569446138 cites W2092566323 @default.
- W569446138 cites W2095743480 @default.
- W569446138 cites W2109401351 @default.
- W569446138 cites W2112548197 @default.
- W569446138 cites W2121163504 @default.
- W569446138 cites W2121473486 @default.
- W569446138 cites W2125429864 @default.
- W569446138 cites W2126171617 @default.
- W569446138 cites W2126573595 @default.
- W569446138 cites W2127406832 @default.
- W569446138 cites W2128649404 @default.
- W569446138 cites W2134387111 @default.
- W569446138 cites W2135169903 @default.
- W569446138 cites W2136679136 @default.
- W569446138 cites W2137041556 @default.
- W569446138 cites W2138404389 @default.
- W569446138 cites W2138567255 @default.
- W569446138 cites W2140616302 @default.
- W569446138 cites W2145249302 @default.
- W569446138 cites W2145851836 @default.
- W569446138 cites W2146794926 @default.
- W569446138 cites W2158900113 @default.
- W569446138 cites W2159268266 @default.
- W569446138 cites W2166182578 @default.
- W569446138 cites W2166464456 @default.