Title: Hydraulic design of spiral casing with non-circular section and its verification with CFD analysis
Abstract: Aimed at the defects present in conventional hydraulic design method of full spiral casing,the hydraulic design of spiral casing with non-circular section,in which the flow observes constant velocity-moment law was analyzed and approached.The numeric approach was used to make the flow in the end section of spiral case with circular section observe constant velocity-moment law without the need to transform it into an oval-shaped section,so that the hydraulic design method of spiral case with non-circular section was improved.It was shown by an actual design practice and flow field simulation with CFD analysis that,by using the presented design method of spiral case with non-circular section,the flow pattern in the spiral case was basically consistent with the design assumption,the flow field was consistent with that obtained by means of theoretical analysis,the flow passage in spiral case was smooth,and the distribution of flow form was fine.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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