Numerical Modelling of Flow Over A Rigid Wavy Surface by LES
نویسندگان
چکیده
A flow field over a rigid wavy surface is numerically generated. The general concept of the large eddy simulation that captures the large scale flow structure is utilized. A coordinate transformation scheme is developed to transform any wavy surface to a flat surface. The numerical computations are carried out in the co ~ domain. The subgrid scales are resolved by utilizing a Smagorinsky subgrid model. The fourth-order central difference and the thirdorder upwinding schemes are used for the diffusive and convective terms, respectively. Adams-Bashforth and Dufort-Frankel schemes are used to solve the equations of the fluid motion. The computational scheme ensured a non-penetration and a no-slip boundary condition. The velocity profile, and the separation and reattachment locations are found to agree well with an experimental investigation.
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