Investigation of liquid n-heptane/air spray detonation with an Eulerian-Eulerian model

被引：16

作者：

Jourdaine, Nicolas ^{[1
]}

Tsuboi, Nobuyuki ^{[1
]}

Hayashi, Koichi ^{[2
]}

机构：

[1] Kyushu Inst Technol, Dept Mech & Control Engn, Kitakyushu, Fukuoka 8048550, Japan

[2] Aoyama Gakuin Univ, Sagamihara, Kanagawa 2525258, Japan

来源：

COMBUSTION AND FLAME | 2022年 / 244卷

关键词：

Multi; -phase; Detonation; Eulerian-Eulerian method; Heat and mass transfer; Spray; ROTATING DETONATION; COMBUSTION; WAVES; FLAMES; SIZE;

D O I：

10.1016/j.combustflame.2022.112278

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A two-dimensional numerical simulation of detonation in a reactive dispersed liquid droplet cloud is per-formed with an Eulerian-Eulerian method. This study aims to investigate the model and the effects of two-phase sub-models on the propagation of a detonation through an n-heptane spray. Firstly, the simu-lations are compared to the experiments conducted in the thesis of Mohamed El-Amine Benmahammed [1]. Three simulations are carried out for a mono-dispersed/one sample cloud of droplets with a mass corresponding to equivalence ratios of 0.8, 1.0, and 1.3. The Eulerian-Eulerian method predicted the ex-perimental detonation velocity and gaseous phase thermodynamic properties with reasonable accuracy. Secondly, an investigation of the effects of the mobilization of the droplet size poly-dispersity on the detonation properties was carried out. For a droplet Sauter mean diameter of 30 pm, the effect of the number of droplet samples used for modeling the poly-dispersity modifies the front structure and deto-nation properties. For instance, comparing 15 samples of droplet size to a unique sample, the detonation velocity decreases by 2.0 % , and the mean detonation cell width increases by 10 % .(c) 2022 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页数：13

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