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http://dx.doi.org/10.5139/JKSAS.2008.36.8.797

Sidewalls Design for a Double-Passage Cascade Model  

Cho, Chong-Hyun (경상대학교 항공공학과 대학원)
Cho, Bong-Soo (경상대학교 항공공학과 대학원)
Kim, Chae-Sil (창원대학교 기계공학과)
Cho, Soo-Yong (경상대 항공기부품기술연구센터)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.36, no.8, 2008 , pp. 797-806 More about this Journal
Abstract
In a double-passage cascade apparatus, only two blades are installed in order to increase the accuracy of experimental result by applying bigger blade than the size of multi-blades on the same apparatus. However, this causes difficulties to make correct periodic condition. In this study, sidewalls are designed to meet periodic condition without removing the operating fluid or adjusting tail boards. Surface Mach number on the blade surface is applied to a responsible variable, and 12 design variables which are related with sidewall profile control are selected. A gradient-based optimization is adopted for wall design and CFX-11 is used for the internal flow computation. The computed result shows that it could obtain the same flow structure by modifying only the sidewalls of the double-passage cascade apparatus.
Keywords
Optimization; Linear Cascade; Turbomachinery; Double-Passage Cascade;
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