Numerical simulation of an oscillating water column device using a code based on Navier–Stokes equations
Numerical simulation of an oscillating water column device using a code based on Navier–Stokes equations
复制标题
DOI：
10.1016/j.energy.2013.08.062
复制
发表时间：
2013-11
期刊：
影响因子：
9
通讯作者：
P. Teixeira;Djavan P. Davyt;E. Didier;Ruben Ramalhais
中科院分区：
文献类型：
--
作者：
P. Teixeira;Djavan P. Davyt;E. Didier;Ruben Ramalhais
研究将海浪能转化为有用能的方法和改进现有设备是复杂的工程问题，也是当今社会非常重要的问题。本文研究了在10 m深的河道中，受1 m高入射波和4 ~ 15 s波周期作用的陆上振荡水柱装置。采用基于Navier-Stokes方程的Fluinco不可压缩流动模型和两步半隐式Taylor-Galerkin方法进行了数值分析。在该算法中实现了一个空气动力学模型来确定施加在自由表面上的空气压力。分析分为两个部分。在第一部分中，比较了Fluinco和商业模型Fluent得到的流量变量，得到了相似的结果。在第二部分中，对提供最佳装置性能的腔室几何形状和涡轮特性关系进行了研究。在这种情况下，计算了前壁深度、腔室长度、涡轮特性关系和腔室高度的变化。
The study of ways of converting ocean wave energy into a useful one and the improvement of the existing equipment are complex engineering problems and very important issues in today's society. In this paper, the onshore oscillating water column device, in a 10 m deep channel subjected to 1 m high incident wave and wave periods from 4 s to 15 s, is investigated. The numerical analyses are carried out using Fluinco model that deals with incompressible flow problems based on the Navier–Stokes equations and employs the two-step semi-implicit Taylor–Galerkin method. An aerodynamic model is implemented in the algorithm to determine the air pressure that is imposed on the free surface. Analyses are divided into two sections. In the first section, the flow variables obtained by Fluinco and the commercial model Fluent are compared and similar results are obtained. In the second section, an investigation of the chamber geometry and turbine characteristic relation that provide the best device performance is carried out. In this case, variations in the front wall depth, the chamber length, the turbine characteristic relation and the chamber height, are made.