A Note on Modeling Mixing in Stably Stratified Flows

被引：23
|
作者：
Kantha, Lakshmi [1 ]
Carniel, Sandro [2 ]
机构：
[1] Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA
[2] CNR, Inst Marine Sci, Venice, Italy
来源：
JOURNAL OF THE ATMOSPHERIC SCIENCES | 2009年 / 66卷 / 08期
关键词：
GEOPHYSICAL BOUNDARY-LAYERS; TURBULENCE CLOSURE MODELS; RECENT WORK; PBL; REGIMES;
D O I：
10.1175/2009JAS3041.1
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
In a recent paper, Canuto et al. made a crucial contribution to modeling mixing in stably stratified flows by discovering that a modification to one of the closure constants can push the critical gradient Richardson number Ri(CR), beyond which turbulence is extinguished, to infinity. In this note, following their approach, the Kantha model is modified to yield a value of infinity for Ri(CR). The results are in good agreement with both the Canuto et al. results and the data presented in their paper.
引用
收藏
页码：2501 / 2505
页数：5
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