TY - GEN
T1 - An immersed boundary method for general flow applications
AU - Edwards, Jack R.
AU - Choi, Jung Il
AU - Ghosh, Santanu
AU - Gieseking, Daniel A.
AU - Eischen, Jeffrey D.
PY - 2010
Y1 - 2010
N2 - The development of a direct-forcing immersed-boundary method for general flow applications is outlined in this paper. A cell-classification procedure based on a signed distance to the nearest surface is used to separate the computational domain into cells outside the immersed object ('field cells'), cells outside but adjacent to the immersed object ('band cells'), and cells within the immersed object ('interior cells'). Interpolation methods based on laminar / turbulent boundary layer theory are used to prescribe the flow properties within the 'band cells'. The method utilizes a decomposition of the velocity field near embedded surfaces into normal and tangential components, with the latter handled using power-law interpolations to mimic the energizing effects of turbulent boundary layers. A procedure for directly embedding sequences of stereo-lithography files as immersed objects in the computational is described, as are extensions of the methodology to compressible, turbulent flows. Described applications include human motion, moving aerodynamic surfaces, and shock / boundary layer interaction flow control.
AB - The development of a direct-forcing immersed-boundary method for general flow applications is outlined in this paper. A cell-classification procedure based on a signed distance to the nearest surface is used to separate the computational domain into cells outside the immersed object ('field cells'), cells outside but adjacent to the immersed object ('band cells'), and cells within the immersed object ('interior cells'). Interpolation methods based on laminar / turbulent boundary layer theory are used to prescribe the flow properties within the 'band cells'. The method utilizes a decomposition of the velocity field near embedded surfaces into normal and tangential components, with the latter handled using power-law interpolations to mimic the energizing effects of turbulent boundary layers. A procedure for directly embedding sequences of stereo-lithography files as immersed objects in the computational is described, as are extensions of the methodology to compressible, turbulent flows. Described applications include human motion, moving aerodynamic surfaces, and shock / boundary layer interaction flow control.
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U2 - 10.1115/FEDSM-ICNMM2010-31097
DO - 10.1115/FEDSM-ICNMM2010-31097
M3 - Conference contribution
AN - SCOPUS:80055008752
SN - 9780791849484
T3 - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
SP - 2461
EP - 2469
BT - ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting Collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels, FEDSM2010
T2 - ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting, FEDSM 2010 Collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
Y2 - 1 August 2010 through 5 August 2010
ER -