Numerical study on wave attenuation inside and around a square array of biofouled net cages |
| |
| Institution: | 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;2. Marine Science and Technology School, Zhejiang Ocean University, Zhoushan 316000, China;1. College of Engineering, Ocean University of China, Qingdao 266100, China;2. Mechanical Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. Johns, A1C 5S7, Canada;1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China;2. National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, PR China;3. Shanghai Collaborative Innovation Center for Oceanic Fisheries, Shanghai 201306, PR China;4. Faculty of Marine Science, Tokyo University of Marine Science and Technology, Minato, Tokyo 108-8477, Japan;1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China;2. Marine Science and Technology School, Zhejiang Ocean University, Zhoushan 316000, China;1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;2. Australian Maritime College, University of Tasmania, 1 Maritime Way, Launceston, TAS 7250, Australia;3. School of Engineering, Edith Cowan University, 270 Joondalup Drive, Perth, 6027 WA, Australia;1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China;2. Ningbo Institute of Dalian University of Technology, Ningbo, 315016, China;1. Department of Marine Technology, Norwegian University of Science and Technology (NTNU), Trondheim, NO-7491, Norway;2. Centre for Autonomous Marine Operations and Systems (AMOS), NTNU, Trondheim, NO-7491, Norway;3. CNR-INSEAN, Marine Technology Research Institute, Rome, Italy;4. Sintef Ocean, Trondheim, Norway |
| |
| Abstract: | In this study, waves propagating through a square array of 16 net cages with different levels of biofouling are numerically studied using a three-dimensional computational fluid dynamics (CFD) model. A porous-media fluid model is adopted to simulate both clean and biofouled netting of a cage array in waves. A numerical wave tank is built, and the oscillating-boundary method is adopted to generate waves. The flow motion is solved by the Navier-Stokes equations, and the free water surface is captured using the volume of fluid (VOF) method. The numerical model is validated by comparing the numerical data with corresponding experimental measurements of a net-cage model with clean netting. To analyze wave attenuation, a numerical analysis of wave elevation both inside and around the cage arrays is presented, which considers the effect of biofouling. Based on the results of the present study, the effect of biofouling on wave elevation is noticeable; the damping effect of the cage array increases with increasing level of biofouling. Furthermore, the incident angle of waves has a noticeable effect on the wave field inside and around the cage array. |
| |
| Keywords: | Cage array Biofouling Wave attenuation Numerical simulation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
