Considering the fact that the architecture environment is rich in wind resources, the building integrated wind turbine (BIWT) has been widely applied to obtain the wind energy with high quality. In order to take advantage of the height of the building and the building diffuser's wind gathering effect, the building augmented vertical axis wind turbine (BA-VAWT), which is composed of a vertical axis wind turbine placed between different building diffusers, is put forward as a type of BIWT. The aerodynamic performance of the BA-VAWT with different building diffusers and their shape parameters is investigated through numerical simulation, which is calculated by Reynolds Averaged Navier–Stokes equations using the transition shear-stress transport SST k–ω turbulence model in this paper. In addition, the computational model and method are validated to be reasonable by comparing the experimental data with the numerically calculated value of the clean BA-building augmented wind turbine. The results show that the building diffusers have a great influence on the aerodynamic performance of BA-VAWT. The trapezium building diffuser has the most effective wind gathering effect with the result of the BA-VAWT presenting a power coefficient as high as 1.56 at the optimal tip-speed ratio of 4.62. Furthermore, the spacing and width of the trapezium building diffuser's effect on BA-VAWT appear more obvious with the increasing tip-speed ratio; meanwhile, the average torque coefficient and the load fluctuation also change significantly in the larger tip-speed ratios due to the existence of many large-scale vortex structures in the wake area.

中文翻译：

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建筑扩压器对建造垂直轴增强型风力发电机的空气动力性能的影响

考虑到建筑环境中风能资源丰富的事实，建筑物集成风力涡轮机（BIWT）已被广泛应用于获得高质量的风能。为了充分利用建筑物的高度和建筑物扩散器的集风效果，提出了一种建筑物竖向风力发电机（BA-VAWT），它由放置在不同建筑物扩散器之间的垂直轴风力发电机组成。作为BIWT的一种。通过数值模拟研究了具有不同建筑物扩散器的BA-VAWT的空气动力学性能及其形状参数，该数值模拟是由雷诺兹平均Navier–Stokes方程使用过渡剪切应力传递SST k– ω计算得出的本文中的湍流模型。此外，通过将实验数据与清洁的BA建筑物增强型风力涡轮机的数值计算值进行比较，验证了该计算模型和方法的合理性。结果表明，建筑扩压器对BA-VAWT的空气动力学性能有很大的影响。梯形建筑扩压器具有最有效的集风效果，BA-VAWT的最佳尖端速度比为4.62时，功率系数高达1.56。此外，随着叶尖速比的增加，梯形建筑扩压器的间距和宽度对BA-VAWT的影响更加明显。同时，