TY - GEN
T1 - Outlook for theoretical modeling of isolated roughness-induced perturbations in turbulent boundary layers (invited)
AU - Tumin, Anatoli
PY - 2007
Y1 - 2007
N2 - Theoretical modeling of perturbations introduced into turbulent boundary layers by an isolated hump can be carried out within the scope of the Reynolds-averaged Navier-Stokes equations. The main obstacle is the closure problem. Having chosen a closure model that is suitable for the boundary layer, one may expect that it will not be adequate for the perturbations. As is known from asymptotic analysis of laminar boundary layers with roughness elements, the physics and the governing equations depend on the roughness length, width, and height. Even at small heights of roughness element, one should expect that the governing equations are nonlinear. These and other questions relevant to roughness-induced perturbations are discussed in the lecture.
AB - Theoretical modeling of perturbations introduced into turbulent boundary layers by an isolated hump can be carried out within the scope of the Reynolds-averaged Navier-Stokes equations. The main obstacle is the closure problem. Having chosen a closure model that is suitable for the boundary layer, one may expect that it will not be adequate for the perturbations. As is known from asymptotic analysis of laminar boundary layers with roughness elements, the physics and the governing equations depend on the roughness length, width, and height. Even at small heights of roughness element, one should expect that the governing equations are nonlinear. These and other questions relevant to roughness-induced perturbations are discussed in the lecture.
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U2 - 10.2514/6.2007-3993
DO - 10.2514/6.2007-3993
M3 - Conference contribution
AN - SCOPUS:35648950436
SN - 1563478978
SN - 9781563478970
T3 - Collection of Technical Papers - 37th AIAA Fluid Dynamics Conference
SP - 602
EP - 613
BT - Collection of Technical Papers - 37th AIAA Fluid Dynamics Conference
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 37th AIAA Fluid Dynamics Conference
Y2 - 25 June 2007 through 28 June 2007
ER -