A study on turbulence-combustion interaction and sub-grid scale model in the simulation of methane pool fire using LES

被引：1

作者：

Safarzadeh, M. ^{[1
]}

Heidarinejad, G. ^{[1
]}

Pasdarshahri, H. ^{[1
]}

机构：

[1] Tarbiat Modares Univ, Fac Mech Engn, POB 14115-148, Tehran, Iran

来源：

SCIENTIA IRANICA | 2021年 / 28卷 / 04期

关键词：

Pool fire; Eddy dissipation model; Infinite fast chemistry; Smagorinsky SGS; One-equation SGS; LES-IQ; LARGE-EDDY SIMULATIONS; VERTICAL SHAFT; INTERNAL FIRE; WHIRL;

D O I：

10.24200/sci.2021.53390.3217

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the effect of the combustion and turbulence Sub-Grid Scale (SGS) model on simulation of a pool fire turbulence field has been studied in open source Cumputational Fluid Dynamic (CFD) software, OpenFOAM. Two combustion models: Eddy Dissipation Model (EDM) and infinite fast chemistry, with the one-equation and Smagorinsky SGS model, are evaluated for a large-scale pool fire. In general, fast kinetic-based combustion models predict excessive heat release rate. The mean squared of the velocity fluctuations is over-predicted. In this simulation, the turbulence models have no significant effect on the results. In fact, the effect of the combustion model is dominant. The EDM combustion model is more compatible when used with the one-equation SGS model and improves the results compared to other cases. In addition, the infinite fast chemistry combustion model is not a suitable model for fire simulation. (C) 2021 Sharif University of Technology. All rights reserved.

引用

页码：2133 / 2149

页数：17

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