作　　者： ; ; ; ;

机构地区： 华中科技大学能源与动力工程学院煤燃烧国家重点实验室

出　　处： 《华中科技大学学报（自然科学版）》 2006年第10期86-88,共3页

摘　　要： 为了提高风量调节阀的耐磨性能,基于多孔射流扩散及叠加原理,提出一种耐磨风量调节阀,其结构特点是阀芯由活动多孔板及具有导流板的固定多孔板组成.利用RNGk-ε模型分别对耐磨风量调节阀及传统插板阀气相流场进行了数值模拟与分析比较,研究结果表明:在耐磨风量调节阀的出口处流场分布比较均匀,而插板阀在出口处存在严重的偏流及回流现象,气流均匀程度很差,所提出的耐磨风量调节阀的结构是合理的,具有较好的耐磨性能. A wearing resistance valve has been developed by mean of the diffusion and the superposition principle of the multi-hole jet flow to improve the wearing performance of the valve. This valve consists mainly of a moveable plate with multi-hole and a fixed plate with holes and air guide plates. A numerical simulation based on RNG κ-ε model is used to predict the flow field distribution in this new valve and the traditional flashboard valve. The simulation results show that the flow field of the outlet of wearing resistance valve is fairly uniform. However, the velocity distribution of traditional flashboard valve is very uneven due to the backward flow and the deflected flow. Therefore the structure and the resistance performance of this new valve are ideal.

关 键 词： 耐磨风量调节阀 流场 数值模拟 射流

领　　域： [环境科学与工程]