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对一种新式、由波浪直接驱动的水轮机性能进行了研究,该波力直驱水轮机导叶为固定式,转轮与冲击式透平相类似.该波能转换装置既可以是近岸固定型的,也可以是海上漂浮型的.在雷诺时均N-S方程基础上,采用有限体积法和标准k-ε紊流模型,对该水轮机内部流动进行了三维数值模拟,并利用数值计算结果对其水头、转速特性进行了研究,还考察了径间比、轮毂比对该水轮机工作性能的影响.研究表明,该波力直驱水轮机具有宽的高效率区,对水头(波高)变化的适应性强,启动性能好等优点.通过以上研究还获得了该水轮机较优的设计参数.
A new type of turbine driven directly by waves is studied, the guidewires of the wave-force direct-drive turbine are of a fixed type and the runner is similar to an impingement turbine.The wave energy conversion device can be either a nearshore stationary type Or it can be floating at sea.Based on the Reynolds-averaged Navier-Stokes equations, the finite volume method and the standard k-ε turbulence model are used to simulate the three-dimensional flow in the turbine and the numerical results Head and rotational speed characteristics of the turbine were also studied.It also investigated the effect of the ratio between the radius and the ratio of the hub to the working performance of the turbine.This study shows that the wave direct drive turbine has a wide area with high efficiency and adaptability to the variation of water head Strong, good start-up performance, etc. Through the above research, the optimal design parameters of the turbine are also obtained.