Numerical study regarding the functioning of solid rocket motor using 3d printed grain

Abstract. Fast advance made in the additive manufacturing of solid propellant grains leads to new possibilities for obtaining a wide spectrum of thrust curves. Additive manufacturing, commonly known as 3D printing, represents an innovative approach in the production of rocket propellants, offering significant advantages over traditional manufacturing methods. This technology enables the creation of complex geometries for solid propellants, known as grains, which optimize combustion characteristics such as burn rate, pressure, and thrust performance. In this paper, we propose a numerical study conducted using ANSYS Fluent, a computational fluid dynamics (CFD) tool, to simulate the combustion dynamics of 3D-printed solid propellants and evaluate their performance in rocket motors.