Examination of the Formation of Combustible Mixtures by Diffusional Mass Transfer

[+] Author and Article Information
O. A. Badr

United Arab Emirates University, Al Ain, United Arab Emirates

G. A. Karim

Department of Mechanical Engineering, The University of Calgary, Calgary, Alberta, Canada

J. Energy Resour. Technol 111(3), 194-199 (Sep 01, 1989) (6 pages) doi:10.1115/1.3231423 History: Received November 01, 1988; Revised May 01, 1989; Online October 22, 2009


The approximate prediction of the concentration profiles following the release of a fuel into air, typically within a confined space at constant pressure and temperature is presented using generalized charts based on the one-dimensional diffusion equation and an effective eddy diffusivity. It is suggested that such generalized plots can be employed to establish the size and changes with time of the associated flammable zones, including when convective diffusion may be involved. Examples for some typical common fuels are presented.

Copyright © 1989 by ASME
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