Internal Flow Simulation of High-Performance Solid Rockets using a k-ω Turbulence Model |
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作者姓名: | V.R.SANAL KUMAR H.D.KIM B.N.RAGHUNANDAN T.SETOGUCHI S.RAGHUNATHAN |
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作者单位: | Andong National University Andong 760-749,Korea,Andong National University Andong 760-749,Korea,Indian Institute of Science Bangalore-560 012,India,Saga University Honjo-machi,Saga 840-8502,Japan,The Oueen's University of Belfast Northern Ireland,UK |
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摘 要: | For technological reasons many high-performance solid rocket motors are made from segmented propellant grains with non-uniform port geometry. In this paper parametric studies have been carried out to examine the geometric dependence of transient flow features in solid rockets with non-uniform ports. Numerical computations have been carried out in an inert simulator of solid propellant rocket motor with the aid of a standard k-ωturbulence model. It was seen that the damping of the temperature fluctuation is faster in solid rocket with convergent port than with divergent port geometry. We inferred that the damping of the flow fluctuations using the port geometry is a meaningful objective for the suppression and control of the instability and/or pressure/thrust oscillations during the starting transient of solid rockets.
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