期刊文献+

并联多翼离心风机蜗壳出口等面积优化法 被引量:6

Homalographic Optimization of Volute Outlet Zone for Multi-Blade Centrifugal Fan Parallel System
原文传递
导出
摘要 多翼离心风机并联系统有限的出口面积使风机性能受到制约,为提高并联运行状态下的风机性能,需对蜗壳的出口结构进行相应的优化。本文引入系数£表征蜗壳出口段流道的收缩程度,详细分析了该收缩度ε对风机性能的影响,并根据不同方案的计算结果提出了一种针对并联系统风机的等面积优化法。基于该方法对原风机蜗壳结构进行了局部改型,模拟及试验结果表明:等面积优化法消除了流道中出口面积受限造成的压力损失,蜗舌附近流动得到明显改善,气动性能也得到较大提升。 The fixed discharge area of multi-blade centrifugal fan parallel system restricts its' aerodynamic performance.In order to improve the performance of fans operating in such a parallel system,a structure optimization should be implemented at the outlet zone of volute.In this paper,coefficient ε was used to characterization the degree of flow channel's contraction at the outlet,its' effects on the performance of fans had been studied detailedly.Ahomalographic optimized method was proposed by comparing the calculated aerodynamic performances of modified cases with different contraction coefficient.The structure of volute outlet zone was modified based on this method.The numerical and experimental results showed that homalographic optimization eliminated the pressure loss caused by the limited discharge area,the flow field near the volute tongue was significantly improved and the performance of parallel system has been increased obviously.
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2016年第4期755-759,共5页 Journal of Engineering Thermophysics
基金 中国南方智谷引进创新团队项目(No.2013CXTD01) 国家火炬计划(No.2012GHO41201)
关键词 多翼离心风机 结构优化 收缩度 性能提升 multi-blade centrifugal fan structure optimization contraction coefficient performance improvement
  • 相关文献

参考文献8

  • 1Guo E M, Kim K Y. Three-Dimensional Flow Analy- sis and Improvement of Slip Factor Model for Forward- Curved Blades Centrifugal Fan [J]. Journal of Mechanical Science &Technology, 2004, 18(2): 302 312.
  • 2Younsi M, Bakir F, Kouidri S, et al. Influence of Impeller Geometry on the Unsteady Flow in a Centrifugal Fan: Numerical and Experimental Analyses [J]. International Journal of Rotating Machinery, 2007(1): 1-10.
  • 3Montazerin N, Damangir A, Mirian S. A New Concept for Squirrel-Cage Fan Inlet [J]. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 1998, 212(5): 343-349.
  • 4Qi Datong, Pomfret M J, Lam K. A New Approach to The Design of Fan Volute Profiles [J]. Proceedings of the Institution of Mechanical Engineers Part C Journal of Me- chanical Engineering Science, 1996, 210:287-294.
  • 5游斌,周拨,吴文新,谢军龙,吴克启.多翼风机新型斜蜗壳和常规直蜗壳的对比研究[J].工程热物理学报,2006,27(2):235-237. 被引量:20
  • 6于长友.并联风机系统的设计和运行问题[J].电力建设,1991,12(8):70-73.
  • 7王从陆,吴国珉,王根.风机并联运转效能分析及工况优化[J].金属矿山,2013,42(10):155-157. 被引量:12
  • 8杨立军,杜小泽,杨勇平,王利宁.直接空冷系统轴流风机群运行特性分析[J].中国电机工程学报,2009,29(20):1-5. 被引量:40

二级参考文献20

共引文献69

同被引文献81

引证文献6

二级引证文献26

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部