| 不同刚度植物杆群对规则波传播及紊动特性影响研究 |
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| 引用本文： | 谭超,黄本胜,刘达,邱静,王珍,吉红香. 不同刚度植物杆群对规则波传播及紊动特性影响研究[J]. 海洋工程, 2016, 34(6): 38-45 |
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| 作者姓名： | 谭超 黄本胜 刘达 邱静 王珍 吉红香 |
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| 作者单位： | 1. 广东省水利水电科学研究院 广东省水动力学应用研究重点实验室， 广州 510610; 2. 河口水利技术国家地方联合工程实验室， 广州 510610;1. 广东省水利水电科学研究院 广东省水动力学应用研究重点实验室， 广州 510610; 2. 河口水利技术国家地方联合工程实验室， 广州 510610;1. 广东省水利水电科学研究院 广东省水动力学应用研究重点实验室， 广州 510610; 2. 河口水利技术国家地方联合工程实验室， 广州 510610;1. 广东省水利水电科学研究院 广东省水动力学应用研究重点实验室， 广州 510610; 2. 河口水利技术国家地方联合工程实验室， 广州 510610;1. 广东省水利水电科学研究院 广东省水动力学应用研究重点实验室， 广州 510610; 2. 河口水利技术国家地方联合工程实验室， 广州 510610;1. 广东省水利水电科学研究院 广东省水动力学应用研究重点实验室， 广州 510610; 2. 河口水利技术国家地方联合工程实验室， 广州 510610 |
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| 基金项目： | 国家自然科学基金(41476073)；广东省水利科技创新基金（2011-08，2012-03，2015-48) |
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| 摘 要： | 以不同刚度硅胶圆杆群为概化植物模型,测定其抗弯弹性模量,通过波浪水槽实验,研究规则波在不同刚度植物杆群内的流速分布、紊动特征及不同刚度杆群的消浪效果。实验结果表明,当波浪通过柔性杆群时,受其摆动的影响,流速周期变化从单峰型逐渐转变成双峰型,杆群刚度越小形成的二次波峰越明显;不同刚度杆群内水体紊动强度变化显示,杆群刚度越大,造成杆群内水体的紊动强度越大;随着杆群抗弯弹性模量的增大,其消浪系数也增大,消浪系数的增长与材料的抗弯弹性模量值非线性关系,而是在某一弹性模量范围内,对消浪系数的影响较为敏感。
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| 关 键 词： | 不同刚度植物杆群 抗弯弹性模量 流速分布 紊动强度 消浪效果 |
Preliminary study on effect of rod groups of different stiffness on regular wave |
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| TAN Chao,HUANG Bensheng,LIU D,QIU Jing,WANG Zhen and JI Hongxiang. Preliminary study on effect of rod groups of different stiffness on regular wave[J]. The Ocean Engineering, 2016, 34(6): 38-45 |
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| Authors: | TAN Chao HUANG Bensheng LIU D QIU Jing WANG Zhen JI Hongxiang |
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| Affiliation: | 1. Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Laboratory of Hydrodynamics, Guangzhou 510630, China; 2. National Engineering Laboratory of Estuary Hydropower Technology, Guangzhou 510630, China;1. Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Laboratory of Hydrodynamics, Guangzhou 510630, China; 2. National Engineering Laboratory of Estuary Hydropower Technology, Guangzhou 510630, China;1. Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Laboratory of Hydrodynamics, Guangzhou 510630, China; 2. National Engineering Laboratory of Estuary Hydropower Technology, Guangzhou 510630, China;1. Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Laboratory of Hydrodynamics, Guangzhou 510630, China; 2. National Engineering Laboratory of Estuary Hydropower Technology, Guangzhou 510630, China;1. Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Laboratory of Hydrodynamics, Guangzhou 510630, China; 2. National Engineering Laboratory of Estuary Hydropower Technology, Guangzhou 510630, China;1. Guangdong Research Institute of Water Resources and Hydropower, Guangdong Provincial Key Laboratory of Hydrodynamics, Guangzhou 510630, China; 2. National Engineering Laboratory of Estuary Hydropower Technology, Guangzhou 510630, China |
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| Abstract: | The bending elastic modulus is measured by the conceptual plant model which is built of silica gel rod groups of different stiffness. The regular wave velocity distribution, turbulence characteristics and wave dissipation effect of different groups are studied in the laboratory experiment. Experimental result shows that when wave runs through the flexible rod groups, the velocity period changes gradually from unimodal to bimodal, and the smaller the rod stiffness is, the more obvious the secondary wave peak will be. The change of turbulence intensity in the different rod groups shows that the bigger the rod stiffness is, the bigger the turbulence intensity will be. With the increase of bending elastic modulus of rod group, the wave dissipation coefficient increases. The increase of wave dissipation coefficient is not linear with the bending elastic modulus; however, it is sensitive within a certain range of elastic modulus |
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| Keywords: | rod groups of different stiffness bending elastic modulus velocity distribution turbulence intensity wave dissipation effect |
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