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Heat release parameter

From Wikipedia, the free encyclopedia

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

Gas expansion ratio

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The gas expansion ratio is simply defined by

which is related to by

See also

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References

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  1. ^ Williams, Forman A. "Combustion theory." (1985).
  2. ^ Linan, Amable, and Forman Arthur Williams. "Fundamental aspects of combustion." (1993).
  3. ^ Clavin, P. (1985). Dynamic behavior of premixed flame fronts in laminar and turbulent flows. Progress in energy and combustion science, 11(1), 1-59.