Factors affecting flame propagation through dust clouds

Cassel, Hans M.; Gupta, Ankur; Guruswamy, Sivaraman

doi:10.1016/s1062-2896(49)80024-9

Cited by 26 publications

(7 citation statements)

References 5 publications

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“…Literature analysis showed that two experimental approaches were used systematically to measure speeds of laminar aerosol flames and respective burning velocities. Pioneering work by Cassel et al 5 and Cassel 6 advanced recently by Goroshin et al, 7−9 ex-plored applicability of Bunsen burner for characterization of aerosol flames. Some interesting trends were established, which distinguished premixed aerosol flames from the gaseous flames, for example, the independence of flame speed on the equivalence ratio in the fuel-rich burning regime.…”

Section: Introductionmentioning

confidence: 99%

Laminar Lifted Flame Speed Measurements for Aerosols of Metals and Mechanical Alloys

Shoshin

Dreizin

2004

AIAA Journal

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This research develops and validates a novel experimental methodology for measurements of laminar flame speed of metal-air aerosols. The methodology is based on a recently developed laminar, lifted flame aerosol burner (LLFAB) using electrostatic fluidization to produce metal aerosol between the electrodes of a plate capacitor. An aerosol jet directed vertically up, and decelerating in a stagnant gas environment is produced. The jet is ignited, and the position of the propagating downward flame is stabilized at a location where the flame speed becomes equal to the jet velocity with the opposite sign. Therefore, the flame speed determines the vertical location of the lifted flame. Aerosol flame speed measurements using LLFAB are compared vs earlier measurements using Bunsen burner and flame tube in microgravity. The developed technique was used to compare the flame speed for pure aluminum and magnesium powders vs flame speed for a set of aluminum-based mechanical alloys using Mg, Ti, Zr, Li, MgH 2 , or C as alloying elements. It was observed that the flame speeds for all of the tested alloys, except the one with carbon, are higher than that of the pure aluminum aerosol.

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Section: Introductionmentioning

confidence: 99%

Laminar Lifted Flame Speed Measurements for Aerosols of Metals and Mechanical Alloys

Shoshin

Dreizin

2004

AIAA Journal

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“…The question of the incidence of the thermal radiation on the flame propagation processes has been raised since decades (Cassel and al., 1949;Kudryavtsev and al., 1982 ;Deshaies and Joulin ;1985 ;Escot-Bocanegra, 2007 ;Bidabadi and al., 2013) and no satisfactory answer could be given until now, partly because of the difficulties to measure the influence, but also because of the difficulty to model the thermal radiation transfer in a suspension of particles. Cassel model can be used to illustrate the potential influence (a deeper analysis was presented in Proust and al., 2013).…”

Section: Is It Really a Problem ?mentioning

confidence: 99%

Thermal radiation in dust flame propagation

Christophe

Rim

Guessasma

et al. 2017

Journal of Loss Prevention in the Process Industries

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“…In the latter situation, the combustion time scale, diffusion dominated (Gulbransen, Andrew, & Brassart, 1964), should be significantly in excess over the first case. The old Cassel model (Cassel, Das Gupta, & Guruswamy, 1937;Cassel, Liebman, & Mock, 1956) collapses these various aspects in a simple way…”

Section: Laminar Flamesmentioning

confidence: 99%