AXS Presentration number 2

Results of a gas ExplosionSimulations In a 1.2 m3 Vessel using

AXS Aluminum Network Mesh

COMPANY INTRODUCTION

AXS Group is the only American research & development manufacturing company specializing in the production and marketing of the Aluminum Network Mesh (AXS). AXS products have many sophisticated universal applications that are proven to protect humans, assets and the environment from explosions, fires and the Green House Effect. AXS Group’s corporate office is located in the City of Dearborn, Michigan USA.

Contents

EXPLOSION SIMULATION

• Introduction• Fill Ratio 0%• Fill Ratio 50%• Fill Ratio 100%• Comparison with Experimental

Data• Summary

PARAMETERS Explosion simulations in a 1.2 m3-vessel using the CFD-software

FLUENT 6.1 have been performed Initially vessel is filled with propane (4.2% vol) in a quiescent

environment Ignition source is located on the vessel center line in a height of

0.74m (below vessel half-height) Vessel is filled with 0%, 50% & 100% AXS

1.2 m3 ClosedExplosion Test Vessel

Axisymmetric Computational Model of Vessel Half

Ignition source

AXS

Propane / Air

P2

P1

P3

P4

Fill Ratio 0%

1.0000e-03 5.0000e-03 1.0000e-02 1.5000e-02

2.0000e-02 2.5000e-02 3.0000e-02 3.5000e-02

Fill Ratio 0%

4.0000e-02 4.5000e-02 5.0000e-02 5.5000e-02

Fill Ratio 0%

6.5000e-02 7.5000e-02 8.5000e-02 1.0000e-01

Fill Ratio 0%

Fill Ratio 0%

Computed Pressure Traces At Transducer Positions P1 to P4

Fill Ratio 0%

Comparison of Simulation & ExperimentalResults of Propane/Air Explosion In A Closed Vessel

1.0000e-03 3.0000e-03 5.0000e-03 1.0000e-02

Fill Ratio 50%

2.0000e-02 3.0000e-02 3.2000e-02 3.4000e-02

Fill Ratio 50%

4.3000e-02 4.5000e-02 5.0000e-02 5.5000e-02

Fill Ratio 50%

Computed Pressure Traces At Transducer Positions P1 to P4

Fill Ratio 50%

Fill Ratio 50%

Computed Temperature Distribution Inside The Vessel

AXSNo AXS

1.000e-03 5.0000e-03 1.0000e-02 1.5000e-02

Fill Ratio 100%

2.0000e-02 2.5000e-02 3.0000e-02 3.5000e-02

Fill Ratio 100%

Fill Ratio 100%

Effect of AXS On Progress Variable Inside Vessel

Fill Ratio 0% 50% 100%

AXS Explosion Simulations

0 % AXS 50 % AXS 100 % AXS

dimensionless temperature: T*=(Ttot - Tinit)/(Tmax – Tinit)

Comparison of computed pressure traces at transducer position P2

Fill Ratio 0%, 50% and 100%

Comparison Between Measurement Data & Simulation Results

Agreement between simulation results and experimental data concerning explosion pressure seems to be excellent Simulation serves as good indication for the behaviour of the gas mixture under different circumstances and allows

reasonable prediction of pressure, pressure rise and temperature

AXS Has Been Extensively Tested, Validated & Is Ready For ImplementationAXS Can Eliminate Any Tank Explosion Associated With:

The Use of Domestic & Commercial LPG Bottles

SUMMARY