Laminar-Turbulent Transition Investigation in a Solid Rocket Motor Representative Cold Flow Setup

摘要

This paper presents a characterization of the laminar-turbulent transition in cold flow setup, representative of the flow in a solid rocket motor. Recent developments based on a linear stability analysis of this particular flow have highlighted the existence of intrinsic instabilities, generating the so-called Parietal Vortex Shedding, responsible of thrust oscillations. From this essential ingredient, an original interpretation of the laminar-turbulent transition is proposed thanks to the support of three criteria. Eventually, a local description of the flow nature is obtained for the entire flow, from which a transition line is defined.