Enclosed Buoyant Convection With Internal Heat Generation Under Oscillating Sidewall Temperature

摘要

Buoyant convection in an enclosure induced by uniform inter- nal heat generation has been extensively studied (Acharya and Goldstein [1], Bergholz [3], Fusegi et al. [4], Kulacki and Gold- Stein []6, May [10]). One canonical layout is a rectangular cavity With two vertical sidewalls at constant temperatures and two in- Sulated horizontal endwalls, with large Rayleigh number Ra (＞10~5), Prandtl number O(1) and cavity aspect ratio O(1). In particular, when both vertical sidewalls are maintained at the same temperature T_0, the overall flow is expectedly symmetric about the vertical centerline. In each half-cavity, the fluid rises (sinks) near the centerline (near the vertical sidewall) region, which forms a single circulation cell.