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Chaotic mixing in a basin due to a sinusoidal wind field
Author(s) -
Liang Qiuhua,
Borthwick Alistair G. L.,
Taylor Paul H.
Publication year - 2005
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.880
Subject(s) - advection , chaotic mixing , mixing (physics) , solver , chaotic , meteorology , mechanics , computational fluid dynamics , geology , oscillation (cell signaling) , physics , mathematics , computer science , mathematical optimization , thermodynamics , quantum mechanics , artificial intelligence , genetics , biology
This paper presents a novel numerical study of wind‐induced mixing in a circular shallow lake. The wind‐induced hydrodynamic field is first predicted by a Godunov‐type shallow water equation solver based on a quadtree grid. Then the horizontal mixing processes are analysed in terms of chaotic advection. The particle dynamics under a sinusoidal wind field are found to change from regular to chaotic states with increasing period of wind oscillation. The numerical approach is applicable to a wide range of environmental flows. Copyright © 2005 John Wiley & Sons, Ltd.