利用CFD技术研究叶片斜度对贯流风机性能的影响  

Study of the effect of blade slope on cross-flow fan performance using CFD technology

作　　者：王银姣[1] 卢剑伟[1] 江斌[1] 高才[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2012年第7期882-887,共6页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(070414163)

摘　　要：为了考察贯流风机多结构参数同时变化对其内部流场的影响,引出与多结构参数联系紧密的叶片斜度,文章利用CFD技术对不同叶片斜度的贯流风机进行非稳态数值模拟,考察流量系数、风机效率及总压系数的变化情况,并用焓差法风量实验验证模拟结果的正确性。结果表明,叶片斜度对风机性能影响显著,通过优化叶片斜度,可以使其流场内偏心涡移向蜗舌,进口段脱落涡减少,出口流速增大,风机性能得到提升。In order to explore the impact of multi-structural parameters simultaneous variation on the internal fluid field of the cross-flow fan, the blade slope strictly related to the multi-structural parameters was introduced. The computational fluid dynamics（CFD） technology was employed to perform the non-steady state numerical simulations of the cross-flow fan under different blade slope. The fan performance was estimated according to the flow coefficient, fan efficiency and total pressure coefficient. The numerical results were validated with the experimental data obtained by the enthalpy method. It is concluded that the blade slope affects the cross-flow fan performance apparently. The optimization of the blade slope can cause the eccentric vortex in the flow field to adhere to the volute tongue closely, decrease the inlet vortices and increase the outlet flow velocity, thus improving the cross-flow fan performance.

关 键 词：贯流风机 风机性能 计算流体力学 ANSYS CFX11.0 

分 类 号：TB657.2[一般工业技术—制冷工程] O35[理学—流体力学]