摘要
为提高油烟机的气动性能,基于计算流体力学(CFD)的方法对其内置的多翼离心风机进行多工况优化设计。选取叶轮进口角β_(1)、叶轮出口角β_(2)、蜗舌相位角φ和蜗舌半径R这四个设计参数,以最大流量和最高效率工况下的风机静压和风机效率为优化目标,采用面心立方设计方法进行四因素三水平的抽样来获取一组样本数据,并结合响应面模型和单纯形算法求得约束范围内的最优解。研究表明,优化后的叶轮靠近蜗舌上游区域的出口速度明显增大,蜗壳出口段扩压能力增强,风机静压最大提升幅度接近10Pa,全压效率在两工况下提升幅度在1.2%~2.4%之间。
In order to improve the aerodynamic performance of the range hood,the multi-working condition optimization design of the multi-blade centrifugal fan was carried out based on the computational fluid dynamics(CFD)method.The four design parameters of impeller inlet angleβ_(1),impeller outlet angleβ_(2),volute tongue phase angleφand volute tongue radius R are selected,and the static pressure and efficiency of the fan under the conditions of maximum flow and maximum efficiency are selected as the optimization goals,and the central composite face-centered design method is used to carry out the optimization.Four factors and three levels of sampling are used to obtain a set of sample data,and the optimal solution within the constraint range is obtained by combining the response surface model and the simplex algorithm.After optimization,the research shows that the outlet velocity of the impeller near the volute tongue area increases significantly,the static pressure in the outlet area of the volute increasesing close to 10Pa.The increasing range of total pressure efficiency is between 1.2%and 2.4%under two working conditions.
作者
施旭娜
吴宁一
吴灵辉
肖千豪
王军
Xu-na Shi;Ning-yi Wu;Ling-hui Wu;Qian-hao Xiao;Jun Wang(Zhejiang Province Key Laboratory of Integrated of Health Smart Kitchen System;School of Energy and Power Engineering,Huazhong University of Science and Technology)
出处
《风机技术》
2022年第4期16-21,共6页
Chinese Journal of Turbomachinery
基金
中央高校基本科研业务费资助,HUST:2021JYCXJJ048.
关键词
多翼离心风机
面心立方试验设计
响应面模型
多目标优化
Squirrel Cage Fan
Central Composite Face-centered Design
Response Surface Model
Multi-objective Optimization
