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首页> 外文期刊>Ocean Engineering >Three dimensional tidal turbine array simulations using OpenFOAM with dynamic mesh
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Three dimensional tidal turbine array simulations using OpenFOAM with dynamic mesh

机译：使用OpenFOAM和动态网格的三维潮汐涡轮机阵列模拟

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摘要

The flow field characteristics in the wake of an isolated tidal turbine and tidal turbine arrays of up to four devices is investigated by numerical simulations solving the Reynolds Averaged Navier Stokes (RANS) equation in the Open Source OpenFOAM CFD solver to make use of the significantly increased availability of computational resources and multi-core processing. Transient simulations utilizing the k - omega SST turbulence closure model were used in combination with a dynamic mesh interface to account for the rotation of the three bladed tidal turbine at constant tip speed ratio, the applicability of dynamic mesh simulations for the investigation of array wakes has been shown. The velocity and turbulence characteristics are compared to experiments previously conducted with a number of small scale tidal turbine devices arranged in staggered array formations and tested within a low ambient turbulence circulating water channel. Results showed good agreement between simulations and experiments and further insight to the flow field within an array is provided, however further improvements to predict the wake characteristics in array are required.
机译：通过数值模拟研究开放式OpenFOAM CFD求解器中的雷诺平均Navier Stokes（RANS）方程，并利用显着增加的数值，研究了孤立的潮汐涡轮机和多达四个设备的潮汐涡轮机阵列后的流场特性。计算资源和多核处理的可用性。利用k-omega SST湍流闭合模型进行的瞬态模拟与动态网格接口结合使用，以说明三叶片潮汐涡轮机在恒定叶尖速比下的旋转，动态网格模拟在研究阵列尾流方面的适用性已显示。将速度和湍流特性与先前对许多以交错阵列形式排列的小型潮汐涡轮机设备进行的实验进行了比较，并在低环境湍流循环水通道内进行了测试。结果表明，仿真和实验之间具有良好的一致性，并提供了对阵列内流场的进一步洞察力，但是还需要进一步改进以预测阵列中的尾流特性。

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