Turbulence and Mixing in Holmboe Waves
Turbulence and Mixing in Holmboe Waves
批准号:
0097124
负责人:
William Smyth
金额:
$1.01万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2000
资助国家:
美国
项目状态:
已结题
起止时间:
2000-12-01 至 2001-11-30
中文摘要
0097124--SMYTH/OSU这个项目是关于Holmboe波是否能够在理想化的分层流动结构中产生明显的混合的初步数值调查,类似于在某些海洋制度中可能预期的混合,例如交换流动。这项研究将检验是否可以实现显著的混合效率。一个连续层流的谱模式,包含一个尖锐的密度梯度和一个较平缓的剪切梯度,将被用来直接数值模拟Holmboe波的增长和非线性发展。如果数值结果提供了Holmboe不稳定性导致有效混合的证据,这将为更深入地研究Holmboe不稳定性及其相关混合的生命周期提供动力。
英文摘要
0097124 -- Smyth/OSUThis project is a preliminary numerical investigation of whether Holmboe waves can generate appreciable mixing in idealized stratified flow configurations similar to those that might be expected in some oceanic regimes such as exchange flows. This research will examine whether a significant mixing efficiency can be achieved. A spectral model of acontinuously stratified flow containing a sharp density gradient and a more gentle shear gradient will be used to make direct numericalsimulations of the growth and nonlinear development of Holmboe waves.If numerical results provide evidence that the Holmboe instability leadsto effective mixing, this will provide an impetus for a more thorough investigation of the life-cycle of Holmboe instabilities and the associated mixing.
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