Effects of non-unity Lewis numbers in diffusion Flames

Liñán Martínez, Amable and Orlandi, P. and Verzicco, R. and Higuera Antón, Francisco (1994). Effects of non-unity Lewis numbers in diffusion Flames. In: "Summer Program 1994. Center for Turbulence Research", 1994, Stanford University.

Description

Title: Effects of non-unity Lewis numbers in diffusion Flames
Author/s:
  • Liñán Martínez, Amable
  • Orlandi, P.
  • Verzicco, R.
  • Higuera Antón, Francisco
Item Type: Presentation at Congress or Conference (Article)
Event Title: Summer Program 1994. Center for Turbulence Research
Event Dates: 1994
Event Location: Stanford University
Title of Book: Proceedings of the Summer Program 1994 Center for Turbulence Research
Date: 1994
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The purpose of this work is to carry out direct numerícal simulations of diffusion controlled combustión with non-unity Lewis numbers for the reactants and producís, thus accounting for the düferential diífusion effects of the temperature and concentration fields. We use a formulation (Liñán (1991a)) based on combining the conservation equations in a way to elimínate the reaction terms similar to the method used by Burke and Schumann (1928) for unity Lewis numbers. We present calculations for an axisymmetric fuel jet and for a planar, time evolving mixing layer, leaving out the effects of thermal expansión and variations of the transport coefficients due to the heat reisase. Our results show that the front of the fíame sbifts toward the fuel or oxygen sides owing to the effect of the düferential diífusion and that the location of máximum temperature may not coincide with the fíame. The dependence of the distríbution of the reaction products on their Lewis number has been investigated.

More information

Item ID: 1532
DC Identifier: http://oa.upm.es/1532/
OAI Identifier: oai:oa.upm.es:1532
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 20 Apr 2009
Last Modified: 20 Apr 2016 06:52
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