In combustion, heat release parameter (or gas expansion parameter) is a dimensionless parameter which measures the amount of heat released by an adibatic combustion process.[1][2] It is defined as
where
In typical combustion process, . For isobaric combustion, using ideal gas law, the parameter can be expressed in terms of density,[3] i.e.,
The ratio of burnt gas to unburnt gas temperature is
- ^ Williams, Forman A. "Combustion theory." (1985).
- ^ Linan, Amable, and Forman Arthur Williams. "Fundamental aspects of combustion." (1993).
- ^ Clavin, P. (1985). Dynamic behavior of premixed flame fronts in laminar and turbulent flows. Progress in energy and combustion science, 11(1), 1-59.