Heat release parameter: Difference between revisions

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In [[combustion]], '''heat release parameter''' (or '''gas expansion parameter''') is a dimensionless parameter which measures the amount of heat released by thean adiabatic combustion process.<ref>Williams, Forman A. "Combustion theory." (1985).</ref><ref>Linan, Amable, and Forman Arthur Williams. "Fundamental aspects of combustion." (1993).</ref> It is defined as

:<math>q = \frac{T_{ad}-T_u}{T_u}</math>

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*<math>T_u</math> is the unburnt mixture temperature.

In typical combustion process, <math>q\approx 32-87</math>. For [[isobaric process|isobaric]] combustion, using [[ideal gas law]], the parameter can be expressed in terms of [[density]],<ref>Clavin, P. (1985). Dynamic behavior of premixed flame fronts in laminar and turbulent flows. Progress in energy and combustion science, 11(1), 1-59.</ref> i.e.,

:<math>q = \frac{T_{ad}-T_u}{T_u} = \frac{\rho_u-\rho_{ad}}{\rho_u}.</math>

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[[Category:Combustion]]

[[Category:Fluid dynamics]]

[[Category:Dimensionless numbers]]

[[Category:Dimensionless numbers of chemistry]]

[[Category:Dimensionless numbers of fluid mechanics]]