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Units of the source terms

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Old   April 14, 2015, 11:16
Default Units of the source terms
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Virgile HUMBERT
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Hello to every ones !

I want to use a source term defined by UDF. For the specie H2O vapour mixed in air.

In the DEFINE_SOURCE function, wich retruns real source for each cell and threads, what is the unity (dimension) of source ? I know C_YI(cell,thread,0) for concentration of water vapour is mass fraction.

Could any one help me understanding this please ?

Thanks !

Virgile
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Old   April 15, 2015, 10:35
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Dustin
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Quote:
Originally Posted by virgile971 View Post
Hello to every ones !

I want to use a source term defined by UDF. For the specie H2O vapour mixed in air.

In the DEFINE_SOURCE function, wich retruns real source for each cell and threads, what is the unity (dimension) of source ? I know C_YI(cell,thread,0) for concentration of water vapour is mass fraction.

Could any one help me understanding this please ?

Thanks !

Virgile
Hi,
The unity of species source (mass source also) is kg/(m^3 x sec).
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