Effect of swirl on the regression rate in hybrid rocket motors

In this work, the effect of swirl on regression rate (rb) in a hybrid rocket motor is investigated numerically. The rb increased monotonically with inlet swirl number and was also found to depend on the inlet swirl profile. The swirl velocity profiles with the peak closer to the axis yielded higher...

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Bibliographic Details
Published in:Aerospace science and technology 2013-08, Vol.29 (1), p.92-99
Main Authors: Kumar, C. Palani, Kumar, Amit
Format: Article
Language:English
Subjects:
Aerospace sciences
Applied sciences
Energy
Energy. Thermal use of fuels
Engines and turbines
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuels
Grains
Hybrid rocket
Inlets
Numerical simulation
Regression
Regression rate
Rocket engines
Rockets
Swirl flow
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Summary:In this work, the effect of swirl on regression rate (rb) in a hybrid rocket motor is investigated numerically. The rb increased monotonically with inlet swirl number and was also found to depend on the inlet swirl profile. The swirl velocity profiles with the peak closer to the axis yielded higher rb. Parametric study on fuel grains of various lengths and diameters (L/Dâ©˝25) shows that swirl is more effective in improving the average rb for short grains (L/D
ISSN:1270-9638
1626-3219
DOI:10.1016/j.ast.2013.01.011