油烟机用多叶离心通风机内部流动的数值模拟

作者：曹亚裙1, 陈建2,王灿星2，邵雪明2 日期：2009-06-24/span> 浏览：3786 查看PDF文档

油烟机用多叶离心通风机内部流动的数值模拟

曹亚裙1, 陈建2,王灿星2，邵雪明2
(1.宁波方太厨具有限公司,浙江 宁波315300； 2.浙江大学 航空航天学院,浙江 杭州 310027)

摘要：为了油烟机设计的进一步发展，以三维雷诺时均NS方程和RNGkε湍流模型为基础，对油烟机用多翼离心式通风机9种实验工况内部整机流场进行了三维数值模拟，并给出了子午面和回转面上的压力和速度分布。该方案采用了有限体积法、非结构化网格和SIMPLE算法，近壁区边界采用了标准壁面函数法，转动的叶轮部分和静止的其它部分采用了“冻结转子”法进行耦合求解。研究结果揭示了多叶离心式通风机内一些重要的流动特征及其变化规律。
关键词：油烟机；多叶离心式通风机；数值模拟； RNGkε湍流模型
中图分类号：TH43文献标识码：A文章编号：1001-4551(2009)06-0038-03

Numerial simulation of flow field in the multiblade centrifugal fan of range hoods
CAO Yaqun1, CHEN Jian2, WANG Canxing2, SHAO Xueming2
(1. Ninbo Fotile Kitchen Ware Co. Ltd., Ninbo 315300, China;
2. School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China)
Abstract: For developing the design of range hoods, based on the threedimensional time averaged NS equation and RNG kε turbulent model, nine running cases were selected in the numerical simulation. The distribution of pressure and speed in meridian plane and rotary surface was given. Finite volume method, nonuniform tetrahedral meshes and the SIMPLE algorithm were used, the standard wall function was adopted near the flow near wall, the rotating coordinate system were used to calculate the flow of impeller. The results show the many important phenomena of the internal flow and their development in the multiblade centrifugal fan.
Key words: rang hoods; multiblade centrifugal fan; numerical simulation; RNGkε turbulent model
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