Optimizing Combustion Flow Dynamics in Rotating Detonation Engines: A Numerical and Experimental Investigation

Optimizing Combustion Flow Dynamics in Rotating Detonation Engines: A Numerical and Experimental Investigation

shreyas bhusnale, shruti deshmukh, bhushan binnar, ayushiaditi verma,amar kulkarni.,

Department of Aerospace Engineering, SOET, Sandip University, Nashik, Maharashtra, India
Corresponding author: [amar.kulkarni@sandipuniversity.edu.in]

Abstract

This study investigates the design and performance of a small-scale Rotating Detonation Engine (RDE) through Computational Fluid Dynamics (CFD) and experimental testing. Building on recent advancements in detonation wave stabilization [3] and thermodynamic efficiency limits [1], we optimize an annular combustion chamber (8 mm gap, titanium/Inconel construction) with 12 staggered pintle injectors (45°). High-fidelity LES simulations [2] validate a detonation wave speed of ~2000 m/s and 42% higher combustion efficiency over conventional engines. Challenges in flow instability and thermal management are addressed via manual control adjustments and passive cooling, aligning with findings from AFRL’s RDE testing [5]. The results demonstrate RDEs’ potential for hypersonic propulsion, with future directions emphasizing AI-driven control [4] and additive manufacturing.

Keywords: Rotating Detonation Engine (RDE), Pressure-gain combustion, CFD analysis, Pintle injectors, Thermal management