稳定分层剪切流动湍流特性的数值研究

卢志明; 贾俊梅; 刘宇陆

稳定分层剪切流动湍流特性的数值研究

1.
上海大学, 上海市应用数学和力学研究所, 上海, 200072
2.
内蒙古工业大学数学系, 内蒙古, 呼和浩特, 010051

基金项目: 国家自然科学基金项目(10472063,10442003);上海市重点学科资助项目(Y0103)

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出版历程
- 收稿日期: 2005-06-20
- 修回日期: 2006-05-15

Numerical study of turbulent characteristics in sheared stably stratified flows

1.
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
2.
Department of Mathematics, Inner Mongolia University of Technology, Huhehaote 010051, China

摘要

摘要: 随着我国沿海经济的迅猛发展,近海海域遭到越来越严重的污染,使海域环境质量明显下降,生态环境日趋恶化,并对生物资源和人体健康产生有害影响.海洋分层环境特征对各类污染物作用的机理和污染物扩散规律研究,对精确预报海洋灾害的发生、发展和应该采取何种防灾减灾工程措施等具有重要意义.海洋中广泛存在密度分层现象,它可由温度分层也可由盐度分层引起.分层流可分为两种类型:一是密度不同的流体有明显的内部分界面,此时我们可以把它看成一个二流体系统(two-layer system),二流体系统中海洋内波问题已有广泛的研究^[1~6];二是密度不同的流体相互掺混形成连续密度梯度分层流.
- 分层流 /
- 混合层 /
- 逆输运 /
- 数值模拟
- stratified flow /
- mixing-layer /
- negative transport /
- numerical simulation

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参考文献(23)

THORPE S A.Experiments on instability and turbulence in a stratified shear flow[J].J Fluid Mech,1973,61(4):731-751.

GRIFFIFTHS R W,KILLWORTH P D,STERN M E.A geostrophic instability of ocean currents[J].J Fluid Mech,1982,117:343-377.

MIED R P,McWILLIAMS J C,LINDEMANN G J.The generation and evolution of mushroom-like vortices[J].J Physical Oceanography,1991,21:489-510.

LI M,CUMMINS P F.A note on hydraulic theory of internal bores[J].Dynamics of Atmospheres and Oceans,1998,28:37 628.

CHOI W,CAMASSA R.Fully nonlinear internal waves in a two-fluid system[J].J Fluid Mech,1999,396:1-36.

POULIN F J,FLIERL G R.The nonlinear evolution of barotropically unstable jets[J].J Physical Oceanography,2003,33:2 173-2 192.

WEBSTER C A G.An experimental study of turbulence in a density-stratified shear flow[J].J Fluid Mech,1964,19:221-245.

LIN J T,VEENHUIZEN S D.Measurements of the decay of grid generated turbulence in a stratified fluid[J].Flow Research Note,1975,No.85.

DICKEY T D,MELLOR G L.Decaying Turbulence in neutral and stratified fluids[J].J Fluid Mech,1980,99:13-31.

BRITTER R E,HUNT J C R,MARSH G L,et al.The effect of stable stratification on turbulence diffusion and the decay of grid turbulence[J].J Fluid Mech,1983,127:27-44.

STILLINGER D C,HELLAND M J,Van ATTA C W.Experiments on the transition of homogenous turbulence to internal waves in a stratified shear flows[J].J Fluid Mech,1983,131:91-122.

ITSWEIRE E C,HELLAND K N,Van ATTA C W.The evolution of grid-generated turbulence in a stably stratified fluid[J].J Fluid Mech,1986,162:299-388.

ROHR J J,ITSWEIRE E C,HELLAND K N,et al.W.Growth and decay of turbulence in a stably stratified shear flow[J].J Fluid Mech,1988,195:77-111.

GERZ T,SCHUMANN U,ELGHOBASHI S E.Direct numerical simulation of stratified homogenous turbulent shear flows[J].J Fluid Mech,1989,200:563-594.

金海生.温度分层剪切流的实验和数值模型研究[J].河海大学学报,1991,19(4):59-67.

胡振红,沈永明,郑永红,等.温度和盐度分层流的数值模拟[J].水科学进展,2001,12(4):439-443.

KALTENBACH H J,GERZ T,SCHUMANN U.Large-eddy simulation of homogeneous and diffusion in stably stratified shear flow[J].J Fluid Mech,1994,280:1-40.2

KOMORI S,UEDA H,OGINO F,et al.Turbulence structure in stable thermally-stratified flow open-channel flow[J].J Fluid Mech,1983,130:13-26.

HUQ P,BRITTER R E.Turbulence evolution and mixing in a two-layer stably stratified fluid[J].J Fluid Mech,1995,285:41-67.

KOMORI S,NAGATA K.Effects of molecular diffusivities on counter-gradient scalar and momentum transfer in strongly stable stratification[J].J Fluid Mech,.1996,326:205-237.

NAGATA K,KOMORI S,The difference in turbulent diffusion between active and passive scalars in stable thermal stratification[J].J Fluid Mech,2001,430:361-380.

REHMAN C R,KOSEFF J R.Mean potential energy change in stratified grid turbulence[J],Dynamics of Atmosphere and Oceans,2004,37:271-294.

SPEZIALE C G,SARKAR S,GATSKI T B.Modeling the pressure-strain correlation of turbulence:an invariant dynamical systems approach[J].J Fluid Mech,1991,227:245-272.

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