TY - GEN
T1 - Computation of slat noise by a LES/LPCE hybrid method with Brinkman penalization
AU - Lee, So Hyeon
AU - Kim, Jong Rok
AU - Bae, Youngmin
AU - Jo, Yong Woo
AU - Moon, Young J.
PY - 2010
Y1 - 2010
N2 - The slat noise of three-element 30P30N airfoil in high-lift configuration is computed by a LES/LPCE hybrid method with Brinkman penalization. The three-dimensional turbulent flow at Rec=1.7×106 and M=0.17 is computed by incompressible large eddy simulation (LES), while acoustic field is calculated by the linearized perturbed compressible equations (LPCE) coupled with Brinkman penalization. An anisotropic permeability tensor is introduced in the momentum equations to impose a slip boundary condition at the impermeable boundaries. The result of present method with body-fitted Cartesian-like grids is validated with that of the conformal multi-block structured grids. Besides, flow structures in the slat cove region are investigated in relation to the noise generation, and finally the effect of porous trailing-edge is examined for reduction of slat noise.
AB - The slat noise of three-element 30P30N airfoil in high-lift configuration is computed by a LES/LPCE hybrid method with Brinkman penalization. The three-dimensional turbulent flow at Rec=1.7×106 and M=0.17 is computed by incompressible large eddy simulation (LES), while acoustic field is calculated by the linearized perturbed compressible equations (LPCE) coupled with Brinkman penalization. An anisotropic permeability tensor is introduced in the momentum equations to impose a slip boundary condition at the impermeable boundaries. The result of present method with body-fitted Cartesian-like grids is validated with that of the conformal multi-block structured grids. Besides, flow structures in the slat cove region are investigated in relation to the noise generation, and finally the effect of porous trailing-edge is examined for reduction of slat noise.
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M3 - Conference contribution
AN - SCOPUS:78649579046
SN - 9781600867446
T3 - 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)
BT - 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)
T2 - 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)
Y2 - 7 June 2010 through 9 June 2010
ER -