Large Eddy Simulation Using Complete Fourth Order Difference Method and Vorticity-Vector Potential Formulation in Generalized Coordinates
KYOTO INST OF TECH (JAPAN) DEPT OF MECHANICAL AND SYSTEM ENGINEERING
Pagination or Media Count:
The vorticity-vector potential formulation and the fourth-order difference method are combined with LES with dynamic subgrid scale model. The new sharp cut off filtering is devised, which has the fourth order accuracy. The present computational method is validated for the simulation of transition in channel. The channel flow with two rows of transverse riblet is computed by the present method and is shown that the drag reduction is attained after the turbulet field developes fully on the riblet surface. It is also found that the transverse riblet has the same effect as the suction.
- Fluid Mechanics