摘要
离心风机蜗壳的传统设计方法主要有五种:等环量法、阿基米德螺旋线方程法、平均速度法、结构方形法及不等距方形法。传统方法虽已技术成熟,但所设计的蜗壳却不能真实反映蜗壳内的实际流动状态,而蜗壳内流场的实际分布状态不仅影响蜗壳的流动效率,还会对风机叶轮产生不利的影响,进而影响风机整机的效率。因此风机蜗壳的优化设计对风机效率的提高有着重要的意义。响应面法由于高效、实用的特点,在优化设计领域受到越来越多的重视。在风机蜗壳的数值模拟中引入响应面法对蜗壳进行优化设计,计算结果表明,优化后风机静压提高5.3%,效率提高4.6%,叶轮流道内速度分布更加均匀,涡流区明显减少。
There are five traditional design methods for centrifugal fan volute,Equal loop method, Archimedes spiral equation method, average velocity method, structure square method and unequal distance square method.Although the traditional method is mature, the designed volute shape line cannot truly show the actual flow state inside the volute. The actual distribution of the flow field in the volute not only affects the flow efficiency of the volute, but also adversely affects the fan impeller, which in turn affects the efficiency of the centrifugal fan. Therefore, the optimal design of the fan volute has an important significance for the improvement of the fan efficiency.Response surface method(RSM) has attracted more and more attention in the field of optimization design due to its high efficiency and practicability. In the numerical simulation of the fan volute, the response surface method is introduced to optimize the design of the volute. The results show that the static pressure of the fan is improved by 5.3% and the efficiency is improved by 4.6% after optimization. The velocity distribution in the impeller passage is more uniform and the vortex area is significantly reduced.
作者
姜卫生
张沛
杨仲磊
裴晴晴
Wei-sheng Jiang;Pei Zhang;Zhong-lei Yang;Qing-qing Pei(Zhengzhou Yutong Heavy Industries Co.,Ltd)
出处
《风机技术》
2019年第6期23-28,共6页
Chinese Journal of Turbomachinery
基金
国家重点研发计划:N2/N3类纯电动商用车动力平台关键技术研究及整车应用(2018YFB0106200)
关键词
离心风机
数值模拟
响应面优化
Centrifugal Fan
Numerical Simulation
Response Surface Optimization
