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http://dx.doi.org/10.5139/JKSAS.2006.34.9.001

Optimization of a Low Specific Speed Turbopump Impeller  

조종현 (경상대학교)
조수용 (경상대학교)
조봉수 (경상대학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.34, no.9, 2006 , pp. 1-10 More about this Journal
Abstract
An optimization study on a small turbopump impeller operating at the low specific speed is conducted to obtain high output head at the impeller exit. Its specific speed in SI unit (RPM, m3/sec, m) is 4.0, and the outer diameter is 56mm. On the optimization, the outer diameter of the impeller is maintained constant to restrict the pump size, and an objective function of pressure head is maximized with eight design variables, which are related with designing an impeller shape. The response surface method is used to the optimization scheme, and the commercial code CFX-10 is applied for numerical analysis. The pressure head of the objective function obtained with an optimized impeller is increased by 9.7% compared with that obtained on an impeller designed with typically recommended design parameters. This increment is caused by reducing the recirculation region within the impeller passage.
Keywords
Optimization; Vane Shape; Turbopump Impeller; Low Specific Speed;
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