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-   -   mass weighted or area weighted (http://www.cfd-online.com/Forums/fluent/41967-mass-weighted-area-weighted.html)

wilson August 8, 2006 13:05

mass weighted or area weighted
 
hi guys can any one tell me whats the difference between mass weighted and area weighted average. i want to calculate pressure drop bewteen inlet and outlet ant at few pre-defined interior surfaces. i am not sure what to use mass or area weighted average.


spepsicho August 9, 2006 10:34

Re: mass weighted or area weighted
 
basically, mass-wg would be for "fluid" variables (density, velocity...) and area-wg for "surfacic" ones (to me).

so, for pressure drop between surfaces, it's more about pressure loads on plans. seems better area-wg

anyway, take a look at the equations in the UG to see which you like the most.


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