Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.11b
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- Pages.556-561
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- 2000
Natural Convection in an Enclosure under Time Dependent Gravity
가변 중력장하의 밀폐 용기 내 자연 대류
- Published : 2000.11.02
Abstract
Comprehensive numerical computations are made of side-heated squire cavity which is exposed to time dependent external mechanical forcing. Numerical solutions are acquires to the governing two-dimensional Navier-Stokes equations for a Boussinesq fluid. Time dependent heat transfer characteristics of interior fluid are analyzed to illustrate resonance phenomenon. When system is exposed to pure sinusoidal mechanical forcing, the numerical results disclose that the basic mechanism of resonance of mechanical forcing is same as that of thermal forcing of Ref. [3, 9]. In comparatively small amplitude of mechanical forcing, thermal characteristics of the system are similar to basic system(
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