EFFECTS OF VELOCITY DISTRIBUTION ON THE STRUCTURE OF BOTTOM BOUNDABY MIXED LAYER IN A STRAIIFIED FLOW
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摘要: 对分层流中海底边界混合层发展问题提出了一个新的垂直积分模型。在这个模型里，新建立的能量方程中出现了一个表征速度大小随高度变化规律的参数，从而得出了被Ｐｏｌｌａｒｄ等人文章中应用的但被本文修正过的Ｒｉｃｈａｎｄｓｏｎ数封闭模型，对在水平乎底上的混合层成长问题，给出了分析解。从而把以往的公式都统一到本文的结果中，而且给出了以往海底边界混合层公式的理论依据与适用范围，这个结果与Ｗｅａｔｈｅｒｌｙ与Ｍａｒｔｉｎ（１９７８）用Ｍｅｌｌｏｒ与Ｙａｍａｄａ（１９７４）的高阶模型所得的数值解结果是基本一致的，并与现场实验相符。Abstract: The problem of bottom boundary mixed layer growth in a stratified flow is dealt with in this paper in terms of a new vertically integrated model.A parameter depending on the distribution of velocity in the vertical direction appears in a new energy balance equation. This energy balance equation is equivalent to the Richardson number closure model used byPollar et al.￣[21] and Thompson￣[13] when the velocity distribution is uniform in the verticaldirection within the layer.The analytic solutions are obtai...
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Key words:
- stratification /
- boundary layer /
- geostrophic flow
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