Abstract.
Turbulent flow over a sinusoidal solid wavy surface was investigated by a direct numerical simulation using a spectral element technique. The train of waves has an amplitude to wavelength ratio of 0.05. For the flow conditions (Re=hU b/2ν= 3460) considered, adverse pressure gradients were large enough to cause flow separation. Numerical results compare favorably with those of Hudson's (1993) measurements. Instantaneous flow fields show a large variation of the flow pattern in the spanwise direction in the separated bubble at a given time. A surprising result is the discovery of occasional velocity bursts which originate in the separated region and extend over large distances away from the wavy wall. Turbulence in this region is very different from that near a flat wall in that it is associated with a shear layer which is formed by flow separation.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 17 April 1996 and accepted 19 November 1997
Rights and permissions
About this article
Cite this article
Cherukat, P., Na, Y., Hanratty, T. et al. Direct Numerical Simulation of a Fully Developed Turbulent Flow over a Wavy Wall . Theoret. Comput. Fluid Dynamics 11, 109–134 (1998). https://doi.org/10.1007/s001620050083
Issue Date:
DOI: https://doi.org/10.1007/s001620050083