Numerical Simulation of Time-Dependent Buoyancy-Driven Convection in an Enclosure

摘要

Unsteady buoyancy-driven convection in an enclosure with lateral heating is studied. The characteristic features of convection in this benchmark configuration are described, and computational aspects are briefly touched on. Of special concern is the flow and heat transfer in response to time-periodic thermal and/or mechanical boundary conditions. Numerical experimentations illustrate the resonance of convection which leads to the amplification of fluctuations of flow and attendant heat transfer at certain frequencies. The physics and utilization of resonance in the context of buoyant convection are explored.