水平自由对流

N. Amin, N. Riley
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引用次数: 16

摘要

分析了加热水平面边界上的边界层流动。沿边界的温度变化引起了驱动流动的压力梯度。从精确解的考虑来看,在温度最高的点上不存在稳定的边界层解。这从非定常流的发展中得到证实,在这一点上,在有限时间内显示出奇异的行为。考虑了稳定的空间周期性流动,结果表明,边界层解在温度最大值处的碰撞中终止。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Horizontal free convection
The boundary-layer flow over a heated horizontal plane boundary is analysed. Temperature variations along the boundary induce a pressure gradient that drives the flow. From consideration of an exact solution it is shown that no steady boundary-layer solution exists at a point where the temperature is a maximum. This is confirmed from the unsteady flow development that, at such a point, reveals a singular behaviour at a finite time. Steady, spatially periodic flows are considered for which it is shown that the boundary-layer solution terminates in a collision at points where the temperature is a maximum.
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