Prediction of Blast Loads on a Deformable Steel Plate Using Euler Equations

Alpman, Emre; Long, Lyle N.; Chen, Chien‐Chung; Linzell, Daniel G.

doi:10.2514/6.2007-4307

Cited by 4 publications

(7 citation statements)

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“…Hence, unlike many other upwind type methods, AUSM-family methods do not require the knowledge of the eigenstructure of the flow problem and this helps generate very efficient implementations. In this study the AUSM+ method [11] was used to calculate the numerical fluxes mainly because this method has previously been used by the author for moving shock wave simulations with satisfactory results [6] - [10]. Performance of this method was also tested against performance of van Leer [28], HLLE [29] and Roe's [30] upwind methods.…”

Section: Methodsmentioning

confidence: 99%

“…The code solves equation (29) in Cartesian, cylindrical, and spherical coordinates and then constructs the numerical solution using equation (10). Numerical solution of equation (29) requires a numerical upwind flux function.…”

Section: Methodsmentioning

confidence: 99%

“…Another approach for a simple formulization of equation (9) can be considered by changing the definition of the approximate solution originally given in equation (10). The first integral in equation (9) can be rewritten as:…”

Section: Theorymentioning

confidence: 99%

“…Also, if one makes a local thermodynamic equilibrium assumption in DSMC, the method becomes equivalent to solving Euler equations [1]. In references [6] - [10] blast wave simulations were performed by solving Euler equations using a finite volume method where a second order accuracy was achieved by extrapolating density, velocity and pressure at the cell interfaces. The fluxes at cell faces were calculated using the AUSM+ method [11] due to its algorithmic simplicity and suitability for flows with discontinuities.…”

Section: Introductionmentioning

confidence: 99%

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Blast Wave Simulations with a Runge-Kutta Discontinuous Galerkin Method

Alpman¹

2012

Advances in Modeling of Fluid Dynamics

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Blast Wave Simulations with a Runge-Kutta Discontinuous Galerkin Method

Alpman¹

2012

Advances in Modeling of Fluid Dynamics

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“…The numerical model was verified with the published experimental results for a 50 mm thick and 1.0 m radius circular plate subjected to blast of 50 kg of TNT kept 0.5 m directly above the center of the plate. The polyurea coated and uncoated steel plates under different loading environments were investigated using self-developed CFD code PUmA2 and the lS-DynA software 54 . The modified PUmA2 was verified for a planer shock-square cavity problem and good agreement was found.…”

Section: Effect Of Blast Wave On Circularmentioning

confidence: 99%

Blast Valve Design and Related Studies : A Review

2016

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The protective structures required for performing critical operations are vulnerable to the blast and shock loads of advanced weapons. A blast valve is an important component of such structures for ventilation during normal conditions and for protection from blast/ shock during explosion. In this paper, various aspects of blast valve design and related studies are briefly reviewed. The concept and effects of blast wave, blast impact, numerical modelling and deformation of circular plate (one of the critical components of blast valve) have been discussed. The merits and demerits of sensing mechanisms viz. remote and direct sensing are discussed. The leakage of blast pressure during finite closing period of the valve (one of the critical problems) and the shock tube as a major experimental facility for testing of blast valves are briefly discussed.Keywords: Blast valve, wave, leakage, closure mechanism, shock tube Figure 1. Schematic of blast closure valve.

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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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Prediction of Blast Loads on a Deformable Steel Plate Using Euler Equations

Cited by 4 publications

References 0 publications

Blast Wave Simulations with a Runge-Kutta Discontinuous Galerkin Method

Blast Wave Simulations with a Runge-Kutta Discontinuous Galerkin Method

Blast Valve Design and Related Studies : A Review

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

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