منابع مشابه
Radiation-Affected Laminar Flame Quenching
where p is the density, cp the specific heat at constant pressure, Su the laminar flame speed, Tb the flame temperature, subscript u the unburned gas and superscript 0 the adiabatic gas, ), the thermal conductivity, 7/= (rp/rR)"2 the weighted nongrayness, rp and rR being the Planck mean and the Rosseland mean of the absorption coefficient, ¢. the wall emissitivity, r = rMI the optical thickness...
متن کاملRadiation-Affected Laminar Flame Propagation
where ~ = (Kp/rR ) '~ is the weighted nongreyness, K p and r R are the Planck mean and the Rosseland mean of the absorption coefficient, r = rM6 K is optical thickness, r M = (rprR)'/~ the mean absorption, 8 K the conduction flame thickness, P = 4o TM3/(~5 K) the Planck number, T M the adiabatic flame temperature, ~ the thermal conductivity, and w the albedo, the ratio of scattering to extinction.
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A steady source of buoyancy creates a plume. Experi mental and theoretical studies of plumes have been mainly concerned with the far-field (self-similar) velocity and den sity profiles. •-3 Yet in many practical situations, knowledge regarding the rate of molecular scale mixing of the buoyant fluid with its environment is needed. This is especially true in the context of atmospheric studies, ...
متن کاملInfrared radiation from a Bunsen flame.
Many observers have studied th e infrared emi sion of a Bunsen flame [11. 2 The strongest band ocem s at about 4.4 Il and is produced by carbon dioxid e. Other bands have been found a t 0.95, 1.45, 2.0, and 2.8 Il , and are a ttributed to carbon dioxide and water vapor. Very little radiation has been observed in the region beyond 7 Il . In the visible and ultraviolet regions of the spectrum, co...
متن کاملRadiation modeling of a turbulent diffusion flame in diesel engine
The purpose of this study is to investigate the effect of radiation heat transfer on temperature distribution and heat flux to the walls of a diesel engine. A diffusion flame is modeled in a simple cylindrical geometry and boundary conditions are defined. A specific solver which can model the turbulent diffusion flame by considering radiation in participating media is used to solve the problem....
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1949
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.22.97