Direct numerical simulation of turbulence-detonation interaction: Parametric study

Abstract eng:
Direct numerical simulations of three dimensional isotropic turbulence-detonation interactions are conducted, based on Navier-Stokes equations and global one-step chemical reaction model. High-resolution bandwidth-optimized WENO scheme spatial discretization and total variation diminishing temporal integration are adopted for shock capturing. Comparative studies of turbulent inflow vertical and entropic forcing effects on the three dimensional detonation front and cellular structures are first conducted. It has been found that the turbulence field imposed has created small scale wrinkles embedded in the detonation front, apart from the large scale features of detonation without turbulence. The periodical movement of the triple points has been delayed and the length of the regular cellular structure increase under turbulent forcing. Effects of different inflow turbulence intensity and detonation strength on turbulence-detonation interactions are investigated in detail.

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