Numerical study of gas-solid reactive flow in a cylinder |
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Authors: | Ardeshir Bangian Tabrizi Mehrzad Shams Reza Ebrahimi |
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Affiliation: | 1.Mechanical Engineering Department,Khaje Nasir-e-Din University of Technology,Tehran,Iran;2.Aerospace Engineering Department,Khaje Nasir-e-Din University of Technology,Tehran,Iran |
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Abstract: | A theoretical model is described for the numerical simulation of unsteady gas-solid reactive flow in packed beds of granular
propellants in a tubular geometry. The approach couples continuity, momentum and energy equations in each phase along with
porosity and granular stresses. Propellant bed combustion process is neglected, but the mass flow rate due to the combustion
is derived using a pressure-based burning rate correlation. As the burning of solid propellant begins, pressure, temperature,
density and other gas parameters begin to change rapidly. To catch these changes, a CFD approach with explicit McCormack method
is used to solve the coupled system of equations. A moving mesh is used to consider the moving boundary. Pressure history,
moving boundary velocity and other parameters of the mixture are obtained and compared with other numerical data. |
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