Publications

DNS/LES Study of Representative Wall-Bounded Turbulent Flows using SIERRA/Fuego

Koo, Heeseok K.; Hewson, John C.; Brown, Alexander B.; Knaus, Robert C.; Kurzawski, Andrew K.; Clemenson, Michael D.

This report summarizes a series of SIERRA/Fuego validation efforts of turbulent flow models on canonical wall-bounded configurations. In particular, direct numerical simulations (DNS) and large eddy simulations (LES) turbulence models are tested on a periodic channel, a periodic pipe, and an open jet for which results are compared to the velocity profiles obtained theoretically or experimentally. Velocity inlet conditions for channel and pipe flows are developed for application to practical simulations. To show this capability, LES is performed over complex terrain in the form of two natural hills and the results are compared with other flow solvers. The practical purpose of the report is to document the creation of inflow boundary conditions of fully developed turbulent flows for other LES calculations where the role of inflow turbulence is critical.