Investigation on A Resistance-Type Porosity Model and the Experimental Coefficients  

作　　者：ZHAO Pei-hong SUN Da-peng WU Hao 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology

出　　处：《China Ocean Engineering》2019年第4期468-476,共9页中国海洋工程（英文版）

基　　金：financially supported by the NSFC–Shandong Joint Fund Project(Grant No.U1706226);the National Natural Science Foundation of China(Grant No.51279027)

摘　　要：The mathematical model based on the Volume-Averaged/Reynolds-Averaged Navier Stokes (VARANS) equations has been adopted in recent years to generally simulate the interaction between waves and porous structures. However, it is still hard to determine the two experimental coefficients (α and β) included in VARANS equations. In the present study, VARANS equation is adopted to describe the flow inside and outside the porous structures uniformly, with applying the volume averaged k ε model to simulate the turbulence effect. A new calibration method is used to evaluate the accuracy of numerical simulation of wave motion on porous seabed with different coefficients, by taking the wave damping rate as an index. The calibration is achieved by completing a simulation matrix on two calibration cases. A region can be found in the parameter space to produce a lower error, which means that the simulation results are better consistent with the experimental results.The mathematical model based on the Volume-Averaged/Reynolds-Averaged Navier–Stokes(VARANS) equations has been adopted in recent years to generally simulate the interaction between waves and porous structures.However, it is still hard to determine the two experimental coefficients(α an d β) included in VARANS equations. In the present study, VARANS equation is adopted to describe the flow inside and outside the porous structures uniformly, with applying the volume averagedk-εmodel to simulate the turbulence effect. A new calibration method is used to evaluate the accuracy of numerical simulation of wave motion on porous seabed with different coefficients, by taking the wave damping rate as an index. The calibration is achieved by completing a simulation matrix on two calibration cases. A region can be found in the parameter space to produce a lower error, which means that the simulation results are better consistent with the experimental results.

关 键 词：porous media VARANS EQUATIONS wave DAMPING rate perforated CAISSON rubble-mound FOUNDATION 

分 类 号：P[天文地球]