林鹏智
海岸工程中各类防波堤设计与优化，近海工程中波浪与结构物耦合作用，工业工程中流体在容器里的震荡，城市水利学中供水管网的设计与优化，河流海岸动力学中泥沙输运与底床冲淤变化，水力学中自由表面的掺气机理等
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 姓名：林鹏智
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学科领域：
海洋工程结构与施工
 研究兴趣：海岸工程中各类防波堤设计与优化，近海工程中波浪与结构物耦合作用，工业工程中流体在容器里的震荡，城市水利学中供水管网的设计与优化，河流海岸动力学中泥沙输运与底床冲淤变化，水力学中自由表面的掺气机理等
1987～1991年：天津大学土木工程系学习，获结构工程工学学士学位。 1991～1993年：赴美留学，获夏威夷大学环境工程科学硕士（M.S.）学位。 1993～1998年：师从美国康奈尔大学国际著名海洋水动力学专家刘立方教授（Philip L.F. Liu）对破碎波数值模拟进行探索性研究。开发成功的康奈尔破碎波数值模型（COBRAS）被大量应用于与海岸工程相关的研究与设计工作。1998年获美国康奈尔大学哲学博士（Ph.D）学位。 1998～1999年：在康奈尔大学从事一年的博士后研究，进一步完善COBRAS。 1999～2000年：在香港理工大学继续从事博士后研究，进行三维大涡模拟的数值模型开发并将其应用于波浪与结构物相互作用研究。 2000～2005年：新加坡国立大学土木工程系，助理教授、副教授。主要从事“新数值水槽”（NEWFLUME）和数值波浪池（NEWTANK）的开发，拓宽数模的工程应用范围。 2004迄今：四川大学水力学与山区河流开发保护国家重点实验室，特聘教授、教授，博士生导师。目前主要从事将计算流体动力学(CFD)运用于各类工程计算的研究与开发。研发兴趣包括海岸工程中各类防波堤设计与优化，近海工程中波浪与结构物耦合作用，工业工程中流体在容器里的震荡，城市水利学中供水管网的设计与优化，河流海岸动力学中泥沙输运与底床冲淤变化，水力学中自由表面的掺气机理等。作为第一完成人，获2004年教育部提名国家科学技术奖（自然科学奖）一等奖： “自由面紊流数值模拟方法研究”。获2005年国家杰出青年科学基金：“紊流自由面掺气机理及数值模拟研究”。

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19
【期刊论文】A fixedgrid model for simulation of a moving body in free surface flows
林鹏智， Pengzhi Lin *
Computers & Fluids 36 (2007) 549561，0001，（）：
1年11月30日
A twodimensional computer model is developed to simulate free surface flow interaction with a moving body. The model is based on the cutcell technique in a fixedgrid system. In this model, a body is approximated by the partial cell treatment (PCT), in which an irregular body is represented by the volumetric fraction of solid in Cartesian cells. The body motion is tracked by Lagrangian method whereas the fluid motion around the body is solved by Eulerian method. The concept of "locally relative stationary (LRS)" is introduced in this study. In the LRS method, a source term is added locally to the conventional continuity equation on body surfaces to take account of body motions, which subsequently affects the computational results of fluid pressure and flow velocity around the body. The LRS method is incorporated into an earlier Reynolds averaged Navier–Stokes (RANS) equations model developed by Lin and Liu [A numerical study of breaking waves in the surf zone. J Fluid Mech 1998; 359: 23964]. The new model is capable of simulating generic turbulent free surface flows and their interaction with a moving body or multiple moving bodies. A series of numerical experiments have been conducted to verify the accuracy of the model for simulation of moving body interaction with a free surface flow. These tests include the generation of a solitary wave with the prescribed wave paddle movements, water exit and water impact and entry of a horizontal circular cylinder, fluid sloshing in a horizontally excited tank, and the acceleration/deceleration of an elliptical cylinder near a water surface. Excellent agreements are obtained when numerical results are compared to available analytical, experimental, and other numerical results. The model is a simpletoimplement computational tool for simulating a moving body in turbulent free surface flows.

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【期刊论文】NUMERICAL MODELING OF WAVE INTERACTION WITH POROUS STRUCTURES
林鹏智， By Philip L.F. Liu， Fellow， ASCE， Pengzhi Lin， KuangAn Chang， and Tsutomu Sakakiyama
，0001，（）：
1年11月30日
This paper presents a numerical model for simulating wave interaction with porous structures. The model calculates the mean flow outside of porous structures based on the Reynolds averaged NavierStokes equations. The corresponding turbulence field is modeled by an improved ke model. The flow in porous structures is described by the spatially averaged NavierStokes equations. The drag forces caused by the presence of a solid skeleton are modeled by the empirical linear and nonlinear frictional forms. The numerical model is first calibrated by simple experiments for flow passing through a porous dam with different porous media. Excellent agreements are obtained for the case using gravels with mean sizes of O (1cm) to O (10cm) as the materials for the porous dam. Reasonably good agreements are also obtained when small uniform glass beads with diameters of 3 mm are used. The calibrated numerical model is then employed to investigate the breaking wave overtopping a caisson breakwater, protected by a layer of armor units. Good agreements between numerical results and laboratory data are obtained in terms of both free surface displacement and overtopping rate. Different design scenarios are also studied numerically. The porous armor layer is effective in reducing the overtopping rate as well as in preventing the caisson breakwater from bottom scouring.

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【期刊论文】Wavecurrent interaction with a vertical square cylinder
林鹏智， Pengzhi Lina， C.W. Lib， ∗
Ocean Engineering 30(2003)855876，0001，（）：
1年11月30日
A threedimensional numerical model is developed in this study to investigate the problem of wave–current–body interaction. The model solves the spatially averaged Navier–Stokes equations. Turbulence effects are modeled by a subgridscale (SGS) model using the concept of large eddy simulation (LES). The model is employed to study the wave–current interaction with a square cylinder that is mounted on the bottom and vertically pierces the free surface. The force analysis demonstrates that the presence of waves can reduce both the strength and frequency of vortex shedding induced by a uniform current due to the nonlinear wave–current interaction. The free surface elevation, strain rates of the mean flow, and eddy viscosity are found to closely correlate with the mechanism of vortex shedding. It is also shown that when the vortex shedding is neglected in the calculation such as by the potential flow approach, one may significantly underestimate the magnitude of inline force. The energy spectral analysis reveals that there exist initiating, growing, and decaying regions for shedding vortices around the cylinder. In the vortex initiating region, both coherent and turbulent structures are nearly twodimensional that become threedimensional in the vortex growing region. The kinetic energy of both coherent and turbulent motions is dissipated in the vortex decaying region, within which the mean flow gradually returns back to twodimensional.
Wavecurrentbody interaction， Square cylinder， Large eddy simulation， Vortex shedding， Wave force， Coherent flow structure

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【期刊论文】Simulation of 173dichlOrOpropene in topsoil with pseudo firstorder kinetics☆
林鹏智， Pengzhi Lina， Clark C. K. Liua， Richard E. Greenb， Randi Schneiderb
Journal of Comtaminant Hydrology 18(1995)307317，0001，（）：
1年11月30日
For fastdegraded chemicals such as 1，3. dichloropropene(1，3D)，their long persistent time in topsoils cannot be explained bv the ordinary first. order kinetics of biOdegradatiOn that iS commonly used in the simulation of chemical transport in soils. The Monod kinetics of biodegradatiOn，which iS usually defined as the mathematical relationship between the residual concentration of the growth. 1imiting substrate and the specific growth of degraders in laboratory reactors，was found to be responsible for the phenomenon of "decelerated biodegradatiOn". To take advantage of both the simplicity Of first. order kinetics in transport modeling and the realistic description Of Monod kinetics for a physical situation. a simplified method was used to represent Monod kinetics with the corresponding pseudo first. order kinetics. Pseudo first. order constants fitted with Monod kinetics were later substituted into the transport model. A satisfactory agreement between field measurement and simulated results using these constants was achieved.

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【期刊论文】RUNUP AND RUNDOWN OF SOLITARY WAVES ON SLOPING BEACHES
林鹏智， By Pengzhi Lin， ， KuangAn Chang， and Philip L.F. Liu， Fellow， ASCE
JOURNAL OF WATERWAY, PORT, COASTAL, AND OCEAN ENGINEERING, SEPTEMBER/OCTOBER 1999, 247～255，0001，（）：
1年11月30日
This paper presents a combined experimental and numerical effort to study solitary wave runup and rundown on beaches. Both nonbreaking and breaking solitary waves are investigated. A twodimensional numerical model that solves both mean flow and turbulence is employed in this study. For the nonbreaking solitary wave on a steep slope, numerical results of the present model are verified by experimental data and numerical results obtained from the boundary integral equation method model, in terms of both velocity distribution and free surface profiles. The characteristics of flow patterns during runup and rundown phases are discussed. The vertical variations of the horizontal velocity component are large at some instances, implying that the shallow water approximation may be inaccurate even for the nonbreaking wave runup and rundown. For the breaking solitary wave on a mild slope, numerical results of the present model are compared with experimental data for free surface displacements. The present model is found to be more accurate than the depthaveraged equations models. Using this numerical model, the mean velocity field and turbulence distribution under the breaking wave are discussed.

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【期刊论文】Numerical modelling of 3D stratied free surface _ows: a case study of sediment dumping
林鹏智， Pengzhi Lin， ， ∗， †， ‡， and Dongchao Wang
Int. J. Numer. Meth. Fluids 2006, 50: 14251444，0001，（）：
1年11月30日
A threedimensional numerical model has been developed to simulate stratied ows with free surfaces. The model is based on the Reynoldsaveraged NavierStokes (RANS) equations with variableuid density. The equations are solved in a transformedcoordinate system with the use of operatorsplitting method (Int. J. Numer. Meth. Fluids 2002; 38: 10451068). The numerical model is validated against the onedimensional diusion problem and the twodimensional densitygradientow. Excellent agreements are obtained between numerical results and analytical solutions. The model is then used to study transport phenomena of dumped sediments into a water body, which has been modelled as a strongly stratiedow. For the twodimensional problem, the numerical results compare well with experimental data in terms of mean particle falling velocity and spreading rate of the sediment cloud for both coarse and mediumsize sediments. The model is also employed to study the dumping of sediments in a threedimensional environment with the presence of free surface. It is found that during the descending process an annuluslike cloud is formed for ne sediments whereas a platelike cloud for mediumsize sediments. The model is proven to be a good tool to simulate strongly stratied free surface ows. Copyright.
3D numerical model， strati ed ows， free surface， sediment dumping， Navier–Stokesequations solver

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【期刊论文】INTERNAL WAVEMAKER FOR NAVIERSTOKES EQUATIONS MODELS
林鹏智， By Pengzhi Lin， and Philip L.F. Liu， ， Fellow， ASCE
JOURNAL OF WATERWAY, PORT, COASTAL, AND OCEAN ENGINEERING, JULY/AUGUST 1999, 207～215，0001，（）：
1年11月30日
The flow motion of incompressible fluid can be described by NavierStokes equations with the continuity equation, which requires zero divergence of the velocity vector (i.e.,

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林鹏智， HuanWen Liua， PengZhi Linb， *
Coastal Engineering 52(2005)197200，0001，（）：
1年11月30日

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林鹏智， Pengzhi Lina， *， Philip L.F. Liub
Coastal Engineering 50(2004)161164，0001，（）：
1年11月30日

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林鹏智， HuanWen Liua， b， Pengzhi Linb， *， N. Jothi Shankarb
Coastal Engineering 51(2004)421437，0001，（）：
1年11月30日
In this paper, we develop an analytical technique in terms of series expansions to solve the mildslope equation on an axisymmetric topography. This technique is applied to study the combined refraction and diffraction of plane monochromatic waves by a circular cylindrical island mounted on a paraboloidal shoal. By using the direct solution for the wave dispersion equation by Hunt [J. Waterw., Port, Coast., Ocean Div. Proc ASCE 4 (1979) 457], the mildslope equation becomes explicit and it is then solved in terms of combined Fourier series and Taylor series. It is found that, to calculate the wave elevation along a perimeter with a specific radius, more terms in the Taylor series and angular modes in the Fourier series are needed for shorter waves. On the other hand, for the same incident wave, the outer the solutions are sought, more angular modes are needed to obtain the converged result of Fourier series. The comparison with the analytical solution based on the linear shallowwater equation by Homma [Geophys. Mag. 21 (1950) 199] is made for long wave incidence and excellent agreements are obtained. For long waves and waves in intermediate water depth, comparisons are made with other numerical results of the mildslope equation and an equally good quality of agreement is achieved. D 2004 Elsevier B.V. All rights reserved.
Wave refraction， Wave diffraction， Wave dispersion， The mildslope equation， Analytical solution， Homma’s island

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