Flame Propagation over Liquid Fuel at Sub-flash Temperature

Matsumoto, Yoichiro; Saito, Takamoto

doi:10.1299/jsme1958.24.160

Cited by 8 publications

(2 citation statements)

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“…The time averaged flame spread rates under subflash conditions measured in this study (for four different fuels: methanol, ethanol, n-propanol, and n-butanol) and experimental data from [12,16] are plotted in Figure 10 …”

Section: Scale Analysis Of Flame Spreadmentioning

confidence: 99%

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Scaling Analysis on Pulsating Flame Spread over Liquids

Takahashi

Ito

Kudo

et al. 2008

International Journal of Chemical Engineering

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Scaling analyses based on subsurface layer instability were performed to explore the role of three independent (surface tension, gravity, and viscosity) influences on the mechanism of pulsating flame spread under normal and microgravity conditions. These three influences form two independent pi-numbers: the Marangoni (Ma) number and Grashof (Gr) number, which include the characteristic length scale ratio (depth of subsurface circulation)/(horizontal length of preheated liquid surface). The Prandtl (Pr) number was introduced to compensate for the different thermal diffusivity and kinematic viscosity of different liquids. Also a nondimensional flame spread rate, V/V D (= Vδ/D, where δ is the quenching distance and D is the diffusivity of fuel vapor) was introduced. Using these nondimensional parameters, the flame spread mechanism was divided into two separate regimes: for the shallow liquid pool the nondimensional flame spread rate was correlated with {Gr 0.2 /(Ma·Pr)} 1.0 , while for the deep liquid pool it was correlated with {Gr 0.2 /(Ma·Pr)} 1.5 .

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Section: Scale Analysis Of Flame Spreadmentioning

confidence: 99%

“…A series of studies was performed to understand the flame spread mechanism on alcohols [1][2][3][4][5][6][7][8][9][10][11][12] and hydrocarbon fuels [4,10]. Based on these results, Glassman and Dryer [13] wrote a review that includes explanations of the mechanism of pulsating spread over subflash point liquids.…”

Section: Introductionmentioning

confidence: 99%