Numerical Simulation of Reactive Flow of Two Turbulence Models Based on Probability Density Function

Abstract

Received: 17 June 2019 Accepted: 25 September 2019 This paper mainly numerically simulates the reactive flow of a hydrogen flame diluted with nitrogen. The behavior of this flame was simulated by two turbulence models: the standard kepsilon (k-ε) model and the Reynolds stress model (RSM). The combustion process was modelled by the probability density function (PDF), in association with the flamlete regime. For comparison, the authors measured the reactive flow of the said flame in a simple configuration under the simulation conditions. The measured results agree well with the simulation results: the RSM consistently outputted better results than the k-ε model in all flame zones. The research results are of great significance to the numerical visualization of turbulent gas flows.