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Numerical investigation of the turbulance combustion interaction in non-premixed CH4 /air flames

Mohd. Sies, Mohsin and Abdul Wahid, Mazlan and Khalid, M. Saqr (2009) Numerical investigation of the turbulance combustion interaction in non-premixed CH4 /air flames. International Journal Of Application Math And Mechanical .

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Abstract

The interaction between turbulence and combustion in non-premixed flames is numerically analyzed. The reaction rate is expressed as a function of the large-eddy time scale through applying the Spalding eddy dissipation model. The turbulence energy production and dissipation rates are simulated by the   k turbulence model. The reacting NS equations were spatially discretized and solved through a finite volume scheme and a decoupled pressure-velocity approach, respectively. The flame was assumed to be steady-state, two dimensional and axisymmetric. The reported results include the velocity, temperature and turbulent reaction rate along the flame propagation field. It is found that the elevated augmentation of free stream turbulence intensity reduces the reaction zone significantly, hence, induces the flame extinction process.

Item Type:Article
Subjects:T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:18956
Deposited By:INVALID USER
Deposited On:15 Dec 2011 05:15
Last Modified:15 Feb 2017 05:22

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