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| 离心通风机蜗舌及出口流场的数值模拟分析 | |
| 引用本文： | 叶舟,王企鲲,郑胜. 离心通风机蜗舌及出口流场的数值模拟分析[J]. 风机技术, 2008, 0(5) |
| 作者姓名： | 叶舟 王企鲲 郑胜 |
| 作者单位： | 上海理工大学动力工程学院,上海市,200093 |
| 基金项目： | 上海市教育委员会科研项目 |
| 摘 要： | 通过对离心通风机的变工况定常流动数值模拟,主要研究了蜗壳舌部及出口流场结构的演变规律,并分析了不同工况下所对应的风机特性变化实质,指出就蜗壳而言,其小流量工况时的"喉部"挤压现象、大流量时的出口流动漩涡及蜗舌回流现象,是影响风机整体特性及运行工况范围的主要因素之一;改善蜗舌及出口几何结构,可以有效提高风机的压头及运行效率. |
| 关 键 词： | 离心式通风机 蜗舌 出口流场 数值模拟 |
Analysis on Volute Tongue and Outlet Flow Field of Centrifugal Fan by Numerical Simulation |
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| Ye Zhou etal. Analysis on Volute Tongue and Outlet Flow Field of Centrifugal Fan by Numerical Simulation[J]. Compressor Blower & Fan Technology, 2008, 0(5) | |
| Authors: | Ye Zhou etal |
| Abstract: | In this paper, the constant state flowing in a centrifugal fan is described under the off - design condition by numerical simulation. In orde to reveal the changing regulation of the fan characteristics under the different operating conditions, the developing laws are analyzed on the structure of volute tongue and outlet flow field It is concluded that the "throat" extruding phenomenon during the small flowrate operation the moving whirlpools at outlet field and back flowing phenomenon at volute tongue duri... |
| Keywords: | centrifugal fan volute tongue outlet flow field numerical simulation |
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