Large eddy simulation of the flow in a transpired channelThe flow in a transpired channel has been computed by large eddy simulation. The numerical results compare very well with experimental data. Blowing decreases the wall shear stress and enhances turbulent fluctuations, while suction has the opposite effect. The wall layer thickness normalized by the local wall shear velocity and kinematic viscosity increases on the blowing side of the channel and decreases on the suction side. Suction causes more rapid decay of the spectra, larger mean streak spacing and higher two-point correlations. On the blowing side, the wall layer structures lie at a steeper angle to the wall, whereas on the suction side this angle is shallower.
Document ID
19890037947
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Piomelli, Ugo (Maryland, University College Park, United States)
Moin, Parviz (NASA Ames Research Center Moffett Field; Stanford University, CA, United States)
Ferziger, Joel (Stanford University CA, United States)