| Numerical Solution of Lock-Release Gravity Current with Viscous Self-Similar Regime |
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| 作者姓名： | 张立柱 李行伟 陈国谦 |
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| 作者单位： | [1]DepartmentofMechanicsandEngineeringScience／StateKeyLaboratoryforTurbulenceandComplexSystem,PekingUniversity,Beijing100871,China [2]DepartmentofCivilEngineering,UniversityofHongKong,HongKong,China |
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| 基金项目： | ProjectsupportedbytheDoctoralProgrammeoftheMinistryofEducationandbytheNationalNaturalScienceFoundationofChina(GrantNo.10372006) |
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| 摘 要： | Lock-release gravity currents with a viscous self-similar regime are simulated by use of the renormalization group(RNG) k - ε model for Reynolds-stress closure. Besides the turbulent regime with initially a slumping phase of a conslant current front speed and later an inviseid self-similar phase of front speed decreasing as t^-1/3(where t is the time measured from release), the viseous self-similar regime is satisfactorily reproduced with front speed decreasing as t^-4/5,consistent with well known experimental observations.
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| 关 键 词： | 重力 重正化 环境论 密度流 实验观测资料 |
Numerical Solution of Lock-Release Gravity Current with Viscous Self-Similar Regime |
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| ZHANG Li-zhu a,c,Joseph H. W. LEE b and CHEN Guo-qian a, a.Numerical Solution of Lock-Release Gravity Current with Viscous Self-Similar Regime[J].China Ocean Engineering,2004,18(1):157-162. |
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| Authors: | ZHANG Li-zhu a c Joseph H W LEE b and CHEN Guo-qian a a |
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| Institution: | ZHANG Li-zhu a,c,Joseph H. W. LEE b and CHEN Guo-qian a,1 a Department of Mechanics and Engineering Science/State Key Laboratory for Turbulence and Complex System,Peking University,Beijing 100871,China b Department of Civil Engineering,University of Hong Kong,Hong Kong,China c School of Naval Architecture and Ocean Engineering,Shanghai JiaoTong University,Shanghai 200030,China |
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| Abstract: | |
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| Keywords: | gravity current self-similarity turbulence modeling environmental fluid mechanics |
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