流体机械

2004, (06) 13-15+38

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离心叶轮外侧间隙内的流动计算
Calculation of Flow Field in Gap Outside of Centrifugal Impeller

闻苏平,阎宏,张楚华
WEN Su-ping,YAN Hong,ZHANG Chu-hua(Xi'an Jiaotong University,Xi'an 710049,China)

摘要(Abstract):

应用低Re数κ—ε模型 ,计算了离心叶轮外侧间隙内具有径向向内流动、间隙比G =0 .0 0 5和 0 .0 113时紊流流动的问题。计算结果显示 ,间隙内流动主要是径向流动。静止盘边界层内是径向向内流动 ,旋转盘边界层内是径向向外流动 ,不存在核心区
The low Reynolds number κ-ε turbulence model is applied to calculate the flow field in the open narrow gap between rotating and stationary disk with radial inward flow at gap width ration G=0.005, 0.0113. The calculating results shows that the flow in gap is radial flow for the open rotating disk system, inward f low occur in the boundary layer on the stationary disk and outward flow in the boundary layer on the rotating disk. The core region does not exist in the gap.

关键词(KeyWords): 旋转圆盘;间隙;紊流模型;数值计算
rotating disk;gap;turbulence model;numerical calculation

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作者(Author): 闻苏平,阎宏,张楚华
WEN Su-ping,YAN Hong,ZHANG Chu-hua(Xi'an Jiaotong University,Xi'an 710049,China)

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