## 20.2.4 and Production in a Gaseous Fuel

The rate of or production is equivalent to the rate of combustion of the fuel:

 (20.2-8)

 where = source of (kg/m -s), where or = mean limiting reaction rate of fuel (kg/m -s) = mass fraction of sulfur in the fuel

The mean limiting reaction rate of fuel, , is calculated from the Magnussen combustion model, so the gaseous fuel SOx option is available only when the generalized finite-rate model is used.

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