流体机械
流體機械
류체궤계
FLUID MACHINERY
2013年
11期
37-42
,共6页
离心通风机%三维流场%数值模拟%计算流体力学
離心通風機%三維流場%數值模擬%計算流體力學
리심통풍궤%삼유류장%수치모의%계산류체역학
centrifugal fan%three-dimensional flow field%numerical simulation%computational fluid dynamics
针对某双吸离心通风机，生产企业为节约成本，对风机轴向尺寸、进气室和蜗壳形线等结构参数进行了重新设计。为验证改进方案是否对风机气动性能产生较大影响，本文对原型风机和改进后风机的流场进行数值模拟，并在此基础上分析了相关流动特征及外特性之间的关联性。研究结果表明改进后的风机气动性能大幅下降，流场细节的对比分析发现进气室和蜗壳的改进对风机性能的负面影响最大。最后对风机气动性能的后续改进提出建议。
針對某雙吸離心通風機，生產企業為節約成本，對風機軸嚮呎吋、進氣室和蝸殼形線等結構參數進行瞭重新設計。為驗證改進方案是否對風機氣動性能產生較大影響，本文對原型風機和改進後風機的流場進行數值模擬，併在此基礎上分析瞭相關流動特徵及外特性之間的關聯性。研究結果錶明改進後的風機氣動性能大幅下降，流場細節的對比分析髮現進氣室和蝸殼的改進對風機性能的負麵影響最大。最後對風機氣動性能的後續改進提齣建議。
침대모쌍흡리심통풍궤，생산기업위절약성본，대풍궤축향척촌、진기실화와각형선등결구삼수진행료중신설계。위험증개진방안시부대풍궤기동성능산생교대영향，본문대원형풍궤화개진후풍궤적류장진행수치모의，병재차기출상분석료상관류동특정급외특성지간적관련성。연구결과표명개진후적풍궤기동성능대폭하강，류장세절적대비분석발현진기실화와각적개진대풍궤성능적부면영향최대。최후대풍궤기동성능적후속개진제출건의。
The structural parameters of a double suction centrifugal fan are re-designed in the consideration of reducing produc-tion cost.To understand the effects of structure improvement on the fan aerodynamic performance , a research is carried out using computational fluid dynamics method .The numerical analysis of the two fan models implies that the newly designed fan is inferior to the original one in the aspect of aerodynamic performance , and the detailed flow field shows the inlet chamber and volute are responsible for the decrease of performance .Finally, some guidance on the improvement of fan aerodynamic performance is pro-posed.
