Title: Solid rocket motor interior ballistics fluid-solid interaction simulation using level set method for 2D grains

Authors: Hossam Alqaleiby; Aly Abdel Fattah Hashem; Mohamed Tosson; Amr Guaily

Addresses: Department of Engineering Mathematics and Physics, Cairo University, Giza, Giza, 12613, Egypt ' Department of Aerospace Engineering, Cairo University, Giza, Giza, 12613, Egypt ' Department of Engineering Mathematics and Physics, Cairo University, Giza, Giza, 12613, Egypt ' Department of Engineering Mathematics and Physics, Cairo University, Giza, Giza, 12613, Egypt; Smart Engineering Systems Research Center (SESC), Nile University, Shaikh Zayed, Giza, 12588, Egypt

Abstract: The flow inside a solid rocket motor is considered taking into account the fluid-solid interaction between the combustion gases and the burning grain surface. An unsteady flow model is presented for the flow variables while the time-dependent burning surface is captured using the level set method. Then, a hybrid model is presented by coupling the flow model with the interface capturing technique. The proposed hybrid model is successfully tested against previously published experimental and numerical data. The use of the level set method enables the flow model to consider complex grain shapes like the star shapes. The proposed hybrid model is used to produce the pressure-time curves for cross-shaped grain and a star grain with five points.

Keywords: fluid-solid interaction; level set method; LSM; finite element method; internal ballistics.

DOI: 10.1504/PCFD.2022.123182

Progress in Computational Fluid Dynamics, An International Journal, 2022 Vol.22 No.3, pp.174 - 186

Received: 26 Mar 2020
Accepted: 19 Apr 2021
Published online: 01 Jun 2022 *

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