粗糙地形内潮导致混合的实验研究Laboratory Study on Internal Wave Induced Mixing over Rough Topography
于宇君,孟静,陈旭,杨华
摘要(Abstract):
内潮是海洋能量级串中重要环节,对维持海洋背景层结及大尺度环流结构起着重要的作用。本文设计了粗糙地形内潮导致混合的实验方案,对内潮混合机制进行了探讨。根据混合机理将流场分为三个区域:底边界层区、近底边界层区及远离边界层区。利用PIV及ADV观测内潮流场中断面的流速,计算并对比了两者的无量纲流速振幅、雷诺剪切应力及湍耗散率。对比结果良好,实验方案可用于内潮混合的实验研究。
关键词(KeyWords): 内潮;混合;湍耗散率;粒子图像测速技术(PIV);声谱多普勒流速仪(ADV)
基金项目(Foundation): 国家自然科学基金仪器专项(61727806);国家自然科学基金项目(41476001;41276008)资助~~
作者(Author): 于宇君,孟静,陈旭,杨华
DOI: 10.16441/j.cnki.hdxb.20170368
参考文献(References):
- [1] Garrett C.Internal tides and ocean mixing[J].Science,2003,301:1858-1859.
- [2] Munk W,Wunsch C.Abyssal recipes II:Energetics of tidal and wind mixing[J].Deep Sea Research I,1998,45:1977-2010.
- [3] Polzin K L,Toole J M,Ledwell J R,et al.Spatial variability of turbulent mixing in the abyssal ocean[J].Science,1997,276:93-96.
- [4] Muller C J,Bühler O.Saturation of the internal tides and induced mixing in the abyssal ocean[J].Journal of Physical Oceanography,2008,39:2077-2096.
- [5] Wang J,Chen X,Wang W,et al.Laboratory experiments on the resonance of internal waves on a finite height subcritical topography[J].Ocean Dynamics,2015,65:1269-1274.
- [6] St.Laurent L,Garrett C.The role of internal tides in mixing the Deep Ocean[J].Journal of Physical Oceanography,2002,32:2882-2899.
- [7] Müller P,Liu X.Scattering of internal waves at finite topography in two dimensions.Part I:Theory and case studies[J].Journal of Physical Oceanography,2000,30:532-549.
- [8] Nikurashin M,Legg S.A mechanism for local dissipation of internal tides generated at rough topography[J].Journal of Physical Oceanography,2011,41:378-395.
- [9] Legg S,Adcroft A.Internal wave breaking at concave and convex continental slopes[J].Journal of Physical Oceanography,2003,33:2224-2246.
- [10] Bluteau C E,Jones N L,Ivey G N.Dynamics of a tidally-forced stratified shear flow on the continental slope[J].Journal of Geophysical Research,2011,116:11017.
- [11] Jayne S R,Laurent L C S.Parameterizing tidal dissipation over rough topography[J].Geophysical Research Letters,2001,28:811-814.
- [12] Jalali M,VanDine A,Chalamalla V K,et al.Oscillatory stratified flow over supercritical topography wave energetics and turbulence[J].Computers and Fluids,2017:1-10.
- [13] Polzin K.Idealized solutions for the energy balance of the finescale internal wave field[J].Journal of Physical Oceanography,2004,34:231-246.
- [14] Zhang H P,King B,Swinney H L.Resonant generation of internal waves on a model continental slope[J].Physical Review Letters,2008,100:244504.
- [15]王金虎,陈旭,徐洋.粗糙地形对内波生成影响的实验研究[J].海洋与湖沼,2016,47:706-713.Wang J,Chen X,Xu Y.Laboratory study on internal wave generation in rough topography[J].Journal of Oceanology and Limology,2016,47:706-713.
- [16] Oster G,Yamamoto M.Density gradient techniques[J].Chemical Reviews,1963,63:257-268.
- [17] Bertuccioli L,Roth G I,Katz J,et al.A submersible particle image velocimetry system for turbulence measurements in the bottom boundary layer[J].Journal of Atmospheric&Oceanic Technology,1999,16:1635-1646.
- [18] Doron P,Bertuccioli L,Katz J,et al.Turbulence characteristics and dissipation estimates in the coastal ocean bottom boundary layer from PIV data[J].Journal of Physical Oceanography,2001,31:2108-2134.
- [19]刘志宇,魏皓.黄海潮流底边界层内湍动能耗散率与底应力的估计[J].自然科学进展,2007,17(3):362-369.Liu Z,Wei H.The estimate of clissipation rate of turbulent kinetic energy and bottom stress in the boundary layer of the yellow sece thcle[J].Process in Natural Science,2007,17(3):362-369.
- [20] Liao Q,Wang B,Wang P F.In situ measurement of sediment resuspension caused by propeller wash with an underwater particle image velocimetry and an acoustic doppler velocimeter[J].Flow Measurement&Instrumentation,2015,41:1-9.
- [21] Pijush K K,Ira M C,David R D,et al.Fluid Mechanics[M].Netherland:Elsevier,2011:551-564.
- [22] Ji C,Munjiza A,Avital E,et al.Direct numerical simulation of sediment entrainment in turbulent channel flow[J].Physics of Fluids,2013,25:531-560.
- [23] Ivey G N,Winters K B,Koseff J R.Density stratification,turbulence,but how much mixing?[J].Annual Review of Fluid Mechanics,2008,40:169-184.
- [24] Polzin K L.An abyssal recipe[J].Ocean Modelling,2009,30:298-309.
文章评论(Comment):
|
||||||||||||||||||
|
||||||||||||||||||