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Hydraulic design and CFD simulation of impeller with integrated inducer
Novosad, Pavel ; Kozák, Jiří (oponent) ; Štefan, David (vedoucí práce)
The main objective of this thesis is the hydraulic design of an oxidizer pump impeller for a rocket engine. The introductory part of the thesis is dedicated to the research of essential terminology and phenomena influencing this design. This is followed by the iterative design of a radial pump, which is however susceptible to cavitation development. Then, the design of the axial stage pump is carried out to increase the radial stage inlet pressure. The design was based on an analytical 2D flow calculation and was subsequently modified using CFD analyses to improve the pump performance, efficiency, and cavitation stability. The final step is to combine the two impellers into one, which due to its more compact dimensions, achieves higher efficiency and is easier to manufacture. For this impeller, assessments are carried out for strength failure, the occurrence of resonance, and susceptibility to cavitation development at low suction pressure.
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