| JIANG Changbo,CHENG Yongzhou,CHANG Liuhong,XIA Bo. 2012. The numerical study of wave-induced pore water pressure response in highly permeable seabed. Acta Oceanologica Sinica, (6):46－55 |
| The numerical study of wave-induced pore water pressure response in highly permeable seabed |
| The numerical study of wave-induced pore water pressure response in highly permeable seabed |
| Received:April 20, 2011 Revised:March 05, 2012 |
| DOI：10.1007/s13131-012-0252-6 |
| Key words:solitary wave regular wave highly permeable seabed pore water pressure numerical study |
| 中文关键词: solitary wave regular wave highly permeable seabed pore water pressure numerical study |
| 基金项目:The National Natural Science Foundation of China under contract Nos 50909009, 50979008 and 41176072; the Open Foundation of the State Key Laboratory of Coastal and Offshore Engineering in Dalian University of Technology of China under contract No. LP1004; the Ph.D. Program Foundation of Ministry of Education of China under contract No. 20094316110002. |
| Author Name | Affiliation | E-mail | | JIANG Changbo | School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha 410004, China
Key Laboratory of Water-Sediment Sciences and Water Disater prevention of Hunan Province, Changsha 410004, China | | | CHENG Yongzhou | School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha 410004, China
Key Laboratory of Water-Sediment Sciences and Water Disater prevention of Hunan Province, Changsha 410004, China | chengyongzhou@163.com | | CHANG Liuhong | School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha 410004, China
Key Laboratory of Water-Sediment Sciences and Water Disater prevention of Hunan Province, Changsha 410004, China | | | XIA Bo | School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha 410004, China
Key Laboratory of Water-Sediment Sciences and Water Disater prevention of Hunan Province, Changsha 410004, China | |
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| Abstract: |
| The coupling numerical model of wave interaction with porous medium is used to study waveinduced pore water pressure in high permeability seabed. In the model, the wave field solver is based on the two dimensional Reynolds-averaged Navier-Stokes (RANS) equations with a k-ε closure, and Forchheimer equations are adopted for flow within the porous media. By introducing a Velocity-Pressure Correction equation for the wave flow and porous flow, a highly efficient coupling between the two flows is implemented. The numerical tests are conducted to study the effects of seabed thickness, porosity, particle size and intrinsic permeability coefficient on regular wave and solitary wave-induced pore water pressure response. The results indicate that, as compared with regular wave-induced, solitary wave-induced pore water pressure has larger values and stronger action on seabed with different parameters. The results also clearly show the flow characteristics of pore water flow within seabed and water wave flow on seabed. The maximum pore water flow velocities within seabed under solitary wave action are higher than those under regular wave action. |
| 中文摘要: |
| The coupling numerical model of wave interaction with porous medium is used to study waveinduced pore water pressure in high permeability seabed. In the model, the wave field solver is based on the two dimensional Reynolds-averaged Navier-Stokes (RANS) equations with a k-ε closure, and Forchheimer equations are adopted for flow within the porous media. By introducing a Velocity-Pressure Correction equation for the wave flow and porous flow, a highly efficient coupling between the two flows is implemented. The numerical tests are conducted to study the effects of seabed thickness, porosity, particle size and intrinsic permeability coefficient on regular wave and solitary wave-induced pore water pressure response. The results indicate that, as compared with regular wave-induced, solitary wave-induced pore water pressure has larger values and stronger action on seabed with different parameters. The results also clearly show the flow characteristics of pore water flow within seabed and water wave flow on seabed. The maximum pore water flow velocities within seabed under solitary wave action are higher than those under regular wave action. |
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