离心叶轮过流截面沿流程变化的计算方法

A Method for Calculating the Changes of Flow Channel Section of a Centrifugal Impeller along Its Flow Path

经过对叶轮流道几何分析和严格的数学推导 ,给出了离心叶轮过流截面沿流程变化的计算方法 ,实现过流截面解析求解。根据工程实例 ,采用了其设计方法 ,调整了叶轮设计 ,取得了较好的效果 ,气流分离现象消失 ,叶轮效率提高。

A method for calculating the variation of flow channel section of a centrifugal impeller along its flow path was obtained through a geometric analysis and strict mathematical deduction of the impeller flow path, thus providing an analytical solution of the flow channel section. In a specific engineering case a design method based on the above approach was employed followed by an adjustment of the impeller design. With the elimination of gas flow separation phenomenon and the realization of higher impeller efficiency one can conclude that relatively good results have been achieved.