“点头鸭”波浪能装置的水动力学特性及效率研究

发布时间：2018-07-14 15:08

【摘要】：随着社会经济的发展,化石燃料的大规模利用与消耗引发的能源问题与环境问题日趋严峻,世界各国都在积极进行着洁净可再生能源的开发与利用工作。海洋能作为清洁可再生能源的一种,越来越成为社会关注的焦点。“点头鸭”波浪能装置是一种高效的波能转换装置,对其进行的研究进而对开发海洋能、发展清洁可再生能源具有重要的意义。本文对鸭式波浪俘能装置的水动力特性和效率问题进行了研究。针对上述问题,首先给出了一阶线性波浪的控制方程和边界条件并对其进行推导求解,在此求解的基础上在FLUENT软件中使用动边界造波法和源项消波法建立了二维数值波浪水池,并对其造波效果和消波效果进行了验证;其次,根据鸭式波浪俘能装置在自由水面处运动的流场控制方程和边界条件对鸭式装置的附加质量和附加阻尼进行了理论分析,并基于附加质量和附加阻尼的数值求解方法,通过数值模拟求解了俘能装置的附加质量和附加阻尼;最后,在上述工作的基础上,通过对俘能装置的受力分析和运动分析,建立了俘能装置与波浪相互作用的流固耦合模型并进行了数值模拟。根据数值模拟结果对俘能装置在波浪作用下的受力与运动情况进行了分析,并从波浪的角度对俘能装置的波能转换效率进行了分析,从而为鸭式波浪俘能装置的实际推广运用和进一步研究提供了参考。
[Abstract]:With the development of social economy, the energy problems and environmental problems caused by the large-scale use and consumption of fossil fuels are becoming more and more serious. All countries in the world are actively engaged in the development and utilization of clean and renewable energy. As a kind of clean and renewable energy, oceanic energy has become the focus of attention. The "nodding duck" wave energy device is an efficient wave energy conversion device. The research on it is of great significance to the development of ocean energy and the development of clean and renewable energy. The hydrodynamic characteristics and efficiency of duck wave energy capture device are studied in this paper. To solve the above problems, the governing equations and boundary conditions of the first order linear wave are first given and solved. Based on the solution, a two-dimensional numerical wave pool is established by using the moving boundary wave-making method and the source term de-wave method in fluent software. The wave-making effect and wave dissipation effect are verified. Secondly, the additional mass and damping of the duck-type device are theoretically analyzed according to the governing equations of the flow field and the boundary conditions of the duck wave capture device moving at the free water surface. Based on the numerical solution of additional mass and additional damping, the additional mass and additional damping of energy capture device are solved by numerical simulation. Finally, based on the above work, the force and motion of the energy capture device are analyzed. A fluid-solid coupling model for the interaction between the energy capture device and the wave is established and numerically simulated. According to the numerical simulation results, the force and motion of the energy capture device under the action of the wave are analyzed, and the wave energy conversion efficiency of the energy capture device is analyzed from the point of view of the wave. It provides a reference for the practical application and further research of duck wave capture device.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P743.2

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