Effect of Divergence Angle on Velocity and Turbulence Intensity of the Flow in Rocket Nozzles: A Computational Analysis

A subfield of fluid mechanics called computational fluid dynamics (CFD) simulates and analyzes fluid flow issues using numerical techniques and algorithms. This investigation focuses on the CFD analysis of the flow characteristics within a supersonic rocket nozzle, specifically examining the impact of varying divergent angles. A two-dimensional axisymmetric model, employing the control volume method, is utilized to solve the governing equations of fluid flow. Key flow parameters, including velocity and turbulence intensity are analyzed to determine the optimal divergent angle. Furthermore, velocity intensity exhibits a consistent increase with larger divergent angles, leading to the identification of an optimal configuration that balances thrust performance. This investigation provides insights into nozzle design, aiming to enhance performance and operational stability in supersonic propulsion systems.