| 波浪环境中垂直射流紊动特性的实验研究 |
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| 引用本文： | 孙昭晨,梁书秀,周丰,王世澎.波浪环境中垂直射流紊动特性的实验研究[J].力学学报,2009,41(1):21-27. |
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| 作者姓名： | 孙昭晨 梁书秀 周丰 王世澎 |
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| 作者单位： | 大连理工大学海岸及近海工程国家重点实验室大连理工大学海岸及近海工程国家重点实验室中交水运规划设计院有限公司中国石油集团工程技术研究院, 天津 300451 |
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| 基金项目： | 辽宁省自然科学基金资助项目(20032115)~~ |
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| 摘 要： | 利用粒子图像测速技术PIV(particle imagevelocimetry)对有限水深规则波浪环境下垂直射流紊动特性进行了实验研究. 应用相位分析法从测量数据中分离出速度脉动项，用4种不同波高的波浪研究波高对射流紊动特性的影响，对紊动量的分布以及大小进行了分析. 结果表明波高对射流的紊动特性有显著影响，并且对流项对波高的变化较紊动扩散项更为敏感，紊动扩散项量值约是对流项的$1/8\sim1/3$, 在时均化的N-S方程中起的作用不可忽略.
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| 关 键 词： | 射流 PIV 波高 紊动 对流 扩散 |
| 收稿时间： | 2007-01-10 |
| 修稿时间： | 2007-11-21 |
EXPERIMENTAL STUDY ON TURBULENT CHARACTERISTICS OF A VERTICAL JET IN WAVE ENVIRONMENT |
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| Sun Zhaochen
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Liang Shuxiu
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Zhou Feng
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Wang Shipeng.EXPERIMENTAL STUDY ON TURBULENT CHARACTERISTICS OF A VERTICAL JET IN WAVE ENVIRONMENT[J].chinese journal of theoretical and applied mechanics,2009,41(1):21-27. |
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| Authors: | Sun Zhaochen Liang Shuxiu Zhou Feng Wang Shipeng |
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| Institution: | The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China |
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| Abstract: | This paper presents a turbulent jet vertically discharged into a flow field of regular waves in the intermediate between deep and shallow water using the particle image velocimetry (PIV) technique.Phase average method was used to extract the turbulent velocity from the PIV measurements.Four waves with differ- ent wave heights were applied in the experiments.The results firstly showed that the turbulent characteristics of jets are significantly affected by the wave height.The convection term is more sensitiv... |
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| Keywords: | jet PIV wave height turbulent convection diffusion |
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