Determination of the Source Terms

For the reactor filled with catalyst of small cylindrical particle, the porosity y can be represented by the following correlations [5]  

When fluid phase flowing through the catalyst, the frictional resistance is created. The coefficient of the frictional force can be calculated by the modified Ergun equation [6]  

The source term Si representing the mass of component i generated by the chemical reaction and can be calculated from the reaction rate  

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