Heat release parameter: Difference between revisions
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The gas expansion ratio is simply defined by |
The gas expansion ratio is simply defined by |
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:<math>r = \frac{\ |
:<math>r = \frac{\rho_u}{\rho_b}</math> |
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which is related to <math>\alpha</math> by <math>r=1-\alpha.</math> |
which is related to <math>\alpha</math> by <math>r=1/(1-\alpha).</math> |
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==See also== |
==See also== |
Revision as of 13:33, 9 July 2024
In combustion, heat release parameter (or gas expansion parameter) is a dimensionless parameter which measures the amount of heat released by the combustion process.[1][2] It is defined as
where
- is the burnt gas temperature
- is the unburnt mixture temperature.
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
The gas expansion ratio is simply defined by
which is related to by
See also
References