Vented dust explosions: comparing experiments, simulations and standards

Huang, Chen, 1981 (författare): RISE,Brand och Säkerhet,RISE Research Institutes of Sweden

Lipatnikov, Andrei, 1961 (författare): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden

(creator_code:org_t)

2022
2022
Engelska.
Ingår i: 10th International Seminar on Fire and Explosion Hazards. - 9788272067211 ; , s. 1-9

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Abstract Ämnesord

Stäng

A vented corn starch dust explosion in an 11.5 m3 vessel is studied by comparing experiments, simulations and the standards. The reduced explosion overpressure inside the vessel is recorded using two pressure sensors installed on the inner wall of the vessel. 3D Unsteady Reynolds-Averaged Navier-Stokes simulations of the experiment are performed using the Flame Speed Closure (FSC) model and its extended version. The FSC model predicts the influence of turbulence on premixed combustion, and the extended version allows for self-acceleration of a large-scale flame kernel, which is associated with the combustion-induced thermal expansion effect. Such an extension is highly relevant to large-scale industrial application. The explosion overpressure-time trace computed using the extended FSC model agrees reasonably well with the experimental data. Furthermore, the effect of vent size and ignition location on the explosion overpressure is studied by comparing the simulation results and the standards. The developed numerical tool and model is especially useful for scenarios, which are not addressed in the standards, and it deserves further study in simulations of other large-scales dust or gaseous explosions together with comparison with experiments.

TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)

Av författaren/redakt...: Huang, Chen, 198 ...; Bloching, Marius; Lipatnikov, Andr ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Teknisk mekanik

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Strömningsmekani ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Annan teknik; och Övrig annan tekn ...

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