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首页> 外文期刊>International journal of green energy >Wake modelling via actuator-line method for exergy analysis in openFOAM
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Wake modelling via actuator-line method for exergy analysis in openFOAM

机译：OpenFoam在Deertuy分析中的唤醒建模

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摘要

In this paper, first and second laws of thermodynamics are performed on MEXICO wind turbine based on a generalized Actuator Line method (ALM). In order to simulate the flow field around wind turbine's rotor and to predict the wake's field behind it, large eddy simulation (LES) coupled with a novel Gaussian spreading width is employed in ALM. Simulation has been done for two different conditions including design conditions and stalled conditions. Due to the wake deficit results, exergy analysis conducted. Some metrological variables such as velocity, pressure, and temperature which are measured in the wind tunnel are used to evaluate wind turbine's performance based on energy and exergy efficiencies. Obtained results are compared to experimental data. It was observed that the ALM results agreed well with measurements. Stall condition's results were in better agreement with experimental data. It is shown that the axial and radial wake velocities showed a difference of 5.2 and 11% respectively. Also, it is shown that output results from ALM have a good ability to analysis wind turbine based on the second law of thermodynamics. The maximum difference from exergy efficiency analysis compared to measurements were only 6.2%.
机译：在本文中，基于广义执行器线（ALM）对墨西哥风力涡轮机进行第一和第二热力学定律。为了模拟风力涡轮机的转子周围的流场并预测它背后的唤醒场，在ALM中采用具有新颖的高斯扩散宽度的大型涡流模拟（LES）。已经为两个不同的条件进行了模拟，包括设计条件和停滞条件。由于唤醒缺陷结果，进行了透明分析。在风隧道中测量的一些计量变量，如速度，压力和温度，用于根据能量和漏洞效率来评估风力涡轮机的性能。获得的结果与实验数据进行比较。观察到ALM结果与测量相同一致。摊位状况的结果与实验数据更好。结果表明，轴向和径向唤醒速度分别显示为5.2和11％。此外，结果表明，基于第二热力学的第二定律，ALM的输出结果具有良好的分析风力涡轮机的能力。与测量相比的漏洞效率分析的最大差异仅为6.2％。

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