摘要
研究了采用三次B样条曲线描述叶轮叶片几何型线的基本方法,对半开式离心叶轮的气动性能进行了分析;通过调整叶片角的分布,使离心叶轮最高效率提高了3.75%,再通过调整叶片前缘厚度使离心叶轮最高效率又提高了0.62%,对应工况下压比也有所提高,离心叶轮气动性能得到改善.
The method of using B-type curves to describe the impeller profile is studied and the method to simulate the aerodynamic performance of the un-shrouded impeller is also discussed in this paper. Through adjusting the blade angle, the efficiency of the impeller has been enhanced 3.75 %, then the efficiency has been enhanced 0.62 % through adjusting blade thickness. The pressure rate has also been enhanced. In the other word, the aerodynamic performance of centrifugal impeller has been improved in this paper.
出处
《河北工业大学学报》
CAS
2008年第1期90-93,共4页
Journal of Hebei University of Technology
关键词
离心叶轮
气动性能
叶片型线
叶片角
叶片厚度
centrifugal impeller
aerodynamic performance
blade profile
blade angle
blade thickness
