CFD simulation of vented explosion and turbulent flame propagation

Tulach, Aleš; Mynarz, Miroslav; Kozubková, Milada

doi:10.1051/epjconf/20159202101

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…CFD packages simulate the hydrodynamics of the fluid in various systems. In recent years, there is a considerable interest in evaluating the use of CFD in the blast wave studies [23,24]. CFD is able to solve the problems of the simulation of explosion under various physical scenarios such as confined environments [25,26], obstructed environment equivalent to a porous system [27], and venting ducts [28].…”

Section: Introductionmentioning

confidence: 99%

A Computational Fluid Dynamics approach for air blast propagation using OpenFOAM and Becker-Kistiakowsky-Wilson equation of state

Noorpoor

Tavangar

Soury

et al. 2020

Heliyon

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In this investigation, the shockwave propagation caused by the explosive detonation in a complex environment has been studied by the open-source Computational Fluid Dynamics (CFD) package, OpenFOAM ® . An extended solver was developed to take the effect of explosion energy into account. The Becker-Kistiakowsky-Wilson (BKW) equation of state (EOS) was implemented in OpenFOAM ® to calculate the detonation impact on the surrounding fluid density variations. Also, the influence of two turbulence modeling approaches of Reynolds-averaged Navier-Stokes (RANS) and Large-eddy Simulation (LES) on the prediction of explosion pressure was studied and compared against previous experimental and numerical studies. The comparisons demonstrated the accuracy of the implemented BKW EOS in calculating the fluid density. Further, it was shown that the LES approach is capable of capturing the unsteady nature of detonation in the near-field of the explosive. Examining the instantaneous velocity vectors of the LES results revealed sequential wave fronts that were responsible for rapid changes in the pressure signals. Furthermore, ground pressure contours demonstrated that the shock waves spread on the ground in a circular shape. The results of the current study suggested that the OpenFOAM ® technology is powerful to incorporate various physical models, including the equation of state and scale-resolving methods such as LES, to capture the complex nature of the detonation phenomenon.

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Section: Introductionmentioning

confidence: 99%

A Computational Fluid Dynamics approach for air blast propagation using OpenFOAM and Becker-Kistiakowsky-Wilson equation of state

Noorpoor

Tavangar

Soury

et al. 2020

Heliyon

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“…In recent years there has been considerable interest in evaluating the use of Computational Fluid Dynamics (CFD) in the blast wave related studies (Hansen et al, 2010 andTulach et al, 2015). CFD has wide application prospects because it is able to create big domains as required and present varied post-process functions such as pathlines, contour, vector, report, animation and plot.…”

Section: Introductionmentioning

confidence: 99%

Using Computational Fluid Dynamics (CFD) for Blast Wave Propagation under Structure

Sohaimi

Risby

Ishak

et al. 2016

Procedia Computer Science

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In recent years, improvised explosive devices has been an aspect of crusades by terrorist or movements around the world. The blast wave propagation of an explosive detonation can cause disastrous damage on the buildings, vehicles and also injuries to vehicle occupants. Full scale blast tests are expensive and time consuming but by using computational based numerical simulations can virtually predict these wave propagations and minimize the need of experimental testing. Computational fluid dynamics (CFD) is a common tool to do an analysis of free-field blast wave and against structure. This paper presents two different blast analyses; free field air blast and blast loading towards a structure using ANSYS FLUENT software. A high explosive of 1 kg blast peak overpressure data from an experiment has been patched at the specific domain of the symmetry plane. The computed results were found to be in agreement with theoretical and additional experimental data. The verified free field air blast model was expanded to study the blast loading response towards a structure. It was found that developed CFD can be further used to predict the blast wave propagation subjected to the vehicle structures or buildings.

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Analysis of the safety of residential buildings under gas explosion loads

Chmielewski

Bąk

2021

Journal of Building Engineering

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CFD simulation of vented explosion and turbulent flame propagation

Cited by 5 publications

References 2 publications

A Computational Fluid Dynamics approach for air blast propagation using OpenFOAM and Becker-Kistiakowsky-Wilson equation of state

A Computational Fluid Dynamics approach for air blast propagation using OpenFOAM and Becker-Kistiakowsky-Wilson equation of state

Using Computational Fluid Dynamics (CFD) for Blast Wave Propagation under Structure

Analysis of the safety of residential buildings under gas explosion loads

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