Quasi-steady State Simulation of Rotating Detonation Engine

Abstract

We performed a numerical simulation based on the two-dimensional (2-D) unsteady Euler's equation with a single-step Arrhenius reaction model in order to investigate the detonation wave front propagation of an Argon (Ar) diluted oxy-hydrogen mixture (2H2 + O2 + 12Ar). This simulation operates in the detonation frame of reference. We examine the effect of grid size and the performance impact of integrated quantities such as mass flow. For a given set of baseline conditions, the minimal and maximum grid resolutions required to simulate the respective detonation waves and the detonation cell structures are determined. Tertiary shock wave behavior for various grids and pre-exponential factors are analyzed. We found that particle fluctuation can be weakened by controlling the mass flow going through the oblique shock waves.

Effects of the dimensionless radius of an annulus on the detonation propagation characteristics in circular and non-circular rotating detonation engines

“…Davidenko et al [9] performed a fundamental study on a two-dimensional (2D) unwrapped RDE. The detonation cell structure in the RDE was studied by Hishida et al [10], followed by many numerical studies on its performance characteristics [11,12]. Cross-sectional flow features of the RDE have the same characteristics as detonation waves at the cross sections of curved tubes or channels; however, surprisingly, very few reports are available on their characteristics, as noted by Frolov [13].…”