Hydrodynamic characteristics of an oscillating water column device
Hydrodynamic characteristics of an oscillating water column device
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DOI：
10.1016/0141-1187(95)00008-9
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发表时间：
1995-06-01
影响因子：
4.3
通讯作者：
Porter, R
中科院分区：
文献类型：
--
作者：
Evans, DV;Porter, R
我们考虑一个波浪能装置，它由一个薄的垂直表面穿透障碍物组成，该障碍物紧挨着有限深度水中的垂直壁。由于垂直入射的波迫使屏障和壁之间的流体的自由表面振荡，进而通过容纳在装置的开口处的单向涡轮机泵送自由表面上方的空气体积，因此提取功率。在线性水波理论的假设下，重要的水动力学性质可以用与障碍物下流体速度成正比的函数的积分量来表示。这些函数各自满足积分方程，其解使用如Porter和Evans [Porter，R. & Evans，D.五、垂直障碍物对波浪散射的补充近似。流体机械，294（1995）155-80]。
We consider a wave energy device consisting of a thin vertical surface-piercing barrier next to a vertical wall in finite depth water. Power is extracted due to a normally incident wave forcing the free surface of the fluid between the barrier and the wall to oscillate, in turn pumping the volume of air above the free surface through a uni-directional turbine housed at the opening of the device. Under the assumptions of linear water wave theory, the important hydrodynamic properties are expressible in terms of integral quantities of functions proportional to the fluid velocity under the barrier. These functions each satisfy integral equations, the solutions of which are approximated very accurately and efficiently using a Galerkin method as described in Porter and Evans [Porter, R. & Evans, D. V., Complementary approximations to wave scattering by vertical barriers. J. fluid Mech., 294 (1995) 155-80].