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KMID : 1024519980070030349
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Journal of the Environmental Sciences
1998 Volume.7 No. 3 p.349 ~ p.360
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A Numerical Study of a Effect of the Uniform Flow in Horizontal Convection
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Lee Hwa-Woon
Kim Yoo-Keun
Jung Woo-Sik
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Abstract
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Effects of uniform flow on a two-dimensional mesoscale horizontal convection were investigated by using the vorticity and thermodynamic equations. For thins purpose, We simulated properties of a thermal convection m a stably stratified Boussinesq flued caused by partial heating at the center of a lower boundary If we don’t consider effects of the uniform flow, the convection takes the form of aidsymmetrlc with respect to the z-alds. But when uniform flow Is strong, velocity field and temperature field consist of a sin91e cell structure which spreads upstream side of the partial heating area. The flow pattern for strong uniform flows takes the form of positive temperatue near the ground and negative temperature perturbation soft over the partial heating area, and downward motion directly over the upwind portion of the partial heating area and upward motion on the downstream side. The downstream edge of the upstream cell Is shifted in the downstream direction with the Increase of uniform flow almost linearly
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KEYWORD
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Horizontal convection, Uniform flow, Partial heating
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