Frequency dependency of side loads resulting from shock motion in a forced oscillating rocket nozzle

Oscillatory and transient flow modes in block nozzle arrangements with a base region

“…Three-dimensional simulation based on RANS equations is carried out in [18] to explore the unsteady flow in over-expansion regime. Prediction of the side load level in an overexpanded nozzle within a forced oscillation regime is carried out in [19]. The calculations exposed in the study point out a critical frequency of oscillation of the nozzle at which the shock motion and the side load level observed have maximum values.…”