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Laminar and Turbulent Characteristics of the Acoustic/Fluid Dynamics Interactions in a Slender Simulated Solid Rocket Motor Chamber

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Computer Modeling in Engineering & Sciences 2021年第5期127卷 437-467页

作者： Abdelkarim Hegab Faisal Albatati Mohammed Algarni Department of Mechanical Engineering Faculty of Engineering at RabighKing Abdulaziz UniversityRabigh21911Saudi Arabia

In this paper,analytical,computational,and experimental studies are integrated to examine unsteady acoustic/vorticity transport phenomena in a solid rocket motor chamber with end-wall disturbance and side-wall ***-fluid dynamic interactions across the chamber may generate intense unsteady vorticity with associated shear *** stresses may cause scouring and,in turn,enhance the heat rate and erosional burning of solid propellant in a real rocket *** this modelling,the unsteady propellant gasification is mimicked by steady-state flow disturbed by end-wall *** analytical approach is formulated using an asymptotic technique to reduce the full governing *** equations that arise from the analysis possess wave properties are solved in an initial-boundary value *** numerical study is performed by solving the parabolized Navier–Stokes equations for the DNS simulation and unsteady Reynolds-averaged Navier–Stokes equations along with the energy equation using the control volume approach based on a staggered grid system with the turbulence *** v2-f turbulence model has been *** results show that an unexpectedly large amplitude of unsteady vorticity is generated at the injection side-wall of the chamber and is then penetrated downstream by the bulk motion of the internal *** stresses may cause a scouring effect and large transient heat transfer on the combustion surface.A comparison between the analytical,computational,and experimental results is performed.

关键词： Acoustic waves solid rocket motor chamber sidewall injection perturbation analysis acoustic instability turbulence models manuscript

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