基于Fluent集风罩工作特性分析

摘要

In this article,the flow characteristics of a wind capturing hood,which has compressor and diffuser,are analyzed through Fluent software.Based on windward angle and flow guiding,four finite element models are established for comparative analysis of the wind capturing hood performance characters in a multi-directional flow and turbulent environment.The research indicates that wind capturing hood can increase the wind velocity and concentrates a wide range of wind energy in a small area,which increases the driving force of the wind.Radial arrangement of the deflector grid can lead multi-directional flow to directional one,suppressing the turbulence and enabling the wind turbine to achieve universal windward.This kind of structure will help the wide use of wind energy technology in urban area.%采用Fluent流体分析软件,对一种带有收缩体和扩散体结构的集风罩进行了仿真.根据集风罩的迎风角度和导流特性建立了4种有限元模型,来对比分析在多流向湍流环境下集风罩的工作特性.研究结果表明,该集风罩可以提高来流风速,实现大范围风能向小区域内集中,从而提高对风力机的驱动能力.向心布置的导流格栅可以引导多方向的来流定向流动,实现万向迎风,并抑制湍流.这种集风罩增大了在城市环境中应用风能技术的可行性.