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Scaling Analysis on Pulsating Flame Spread over Liquids
Joint Authors
Konishi, Tadashi
Saito, Kozo
Kudo, Yuji
Takahashi, Kozue
Ito, Akihiko
Source
International Journal of Chemical Engineering
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-05-15
Country of Publication
Egypt
No. of Pages
10
Abstract EN
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/VD (= 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 {Gr0.2/(Ma·Pr)}1.0, while for the deep liquid pool it was correlated with {Gr0.2/(Ma·Pr)}1.5.
American Psychological Association (APA)
Takahashi, Kozue& Ito, Akihiko& Kudo, Yuji& Konishi, Tadashi& Saito, Kozo. 2008. Scaling Analysis on Pulsating Flame Spread over Liquids. International Journal of Chemical Engineering،Vol. 2008, no. 2008, pp.1-10.
https://search.emarefa.net/detail/BIM-987848
Modern Language Association (MLA)
Takahashi, Kozue…[et al.]. Scaling Analysis on Pulsating Flame Spread over Liquids. International Journal of Chemical Engineering No. 2008 (2008), pp.1-10.
https://search.emarefa.net/detail/BIM-987848
American Medical Association (AMA)
Takahashi, Kozue& Ito, Akihiko& Kudo, Yuji& Konishi, Tadashi& Saito, Kozo. Scaling Analysis on Pulsating Flame Spread over Liquids. International Journal of Chemical Engineering. 2008. Vol. 2008, no. 2008, pp.1-10.
https://search.emarefa.net/detail/BIM-987848
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-987848