- Author
- DiBlasi, C. | Crescitelli, S. | Russo, G. | Fernandez-Pello, A. C.
- Title
- On the Influence of the Gas Velocity Profile on the Theoretically Predicted Opposed Flow Flame Spread.
- Coporate
- Universita di Napoli, Naples, Italy California Univ., Berkeley
- Journal
- Combustion Science and Technology, Vol. 64, No. 4-6, 289-294, 1989
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Contract
- NBS-GRANT-60NANB7D0737
- Book or Conf
- Combustion Institute/Eastern States Section. Chemical and Physical Processes in Combustion. Technical Meeting, 1988. December 5-7, 1988, Clearwater Beach, FL, 74/1-4 p., ['1988', '1989']
- Keywords
- flame spread | solid fuels | velocity
- Abstract
- The mathematical solution of the problem describing the spread of flames over the surface of a thick solid fuel is very complicated and its formulation has been often simplified by prescribing a gas velocity profile, thus eliminating the momentum equations. The most commonly used profile in the models include a linear velocity gradient and a parabolic profile. Since the spread of the flame is controlled by heat transfer from the flame to the unburnt fuel upstream and by the rate of the gas phase chemical reaction, and since the velocity field affects both processes, the type of velocity profile used in a model should affect the characteristics of its solution. Thus it is important to know not only the predictive capabilities of the different models, but also how much the velocity profile selected affects the nature of the results.