An attempt is made for simultaneous, but independent control of skin friction reduction and heat transfer enhancement in a turbulent channel flow. First, a mathematical relation is derived of the contribution of turbulent heat flux to the Nusselt number. Two different thermal boundary conditions are considered: (1) isothermal condition, where two walls are kept at constant, but different temperatures; (2) isoflux condition, where both walls are heated at a given wall heat flux. By utilizing the difference between the derived relation and the similar relation for the skin friction (Fukagata et al., 2002), a strategy for the simultaneous control is proposed. The effects of the control strategy are examined by means of direct numerical simulation.
|出版ステータス||Published - 2005 12 1|
|イベント||4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States|
継続期間: 2005 6 27 → 2005 6 29
|Other||4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4|
|Period||05/6/27 → 05/6/29|
ASJC Scopus subject areas
- Fluid Flow and Transfer Processes