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http://dx.doi.org/10.5139/JKSAS.2003.31.8.099

Numerical Investigation of Geometrical Design Variables for Improvement of Aerodynamic Performance of Supersonic Impulse Turbine  

Lee,Eun-Seok (한국항공우주연구원)
Kim,Jin-Han (한국항공우주연구원)
Jo,Gwang-Rae (한국항공우주연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.8, 2003 , pp. 99-106 More about this Journal
Abstract
Geometrical design variables are numerically investigated to improve aerodynamic performance of the supersonic impulse turbine of a turbopump in a liquid rocket engine. Aerodynamic redesign was performed for maximization of the blade power. Four design variables considered are blade angle, blade thickness and radii of upper and lower arc blade with appropriate constraints. A fast Navier-Stokes solver was developed and Chien's k-$\varepsilon$ turbulence modelling was used for turbulence closure. In initial shape, a flow separation was found in the middle of blade chord. However, it disappeared in final shape via its geometrical design variable change. About 3.2 percent of blade power was increased from this research.
Keywords
Turbopump; Partial Admission; Impulse turbine; Aerodynamic redesign;
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