Mean mass flow rate
hallo, I am working with the VOFmodell and I want to calculate the mean mass flow rate within a period of time at the outlet during batch calculation mode. Has anybody an idea how to do that? Thanks in advance

Re: Mean mass flow rate
Enable the Data Sampling for Time Statistics on the Iterate panel.
Then define define a Custom Field Function in which you specify Q = rho*v_avg*S, where rho is the density of the flow, v_avg is the time averaged velocity (you can find it in the Unsteady Statistics list) perpendicular to outlet and S is the section of outlet (if constant, just insert the value, else omit it: you'll obtain the mass flux instead of the mass flow rate). To obtain the mean value on the surface, just use the Report>Surface Integral function to obtain a area weighted average of the Custom Field Function you defined. That's should be the value you're looking for. Hi ap 
Re: Mean mass flow rate
Thank u ap. I'll try it! Ataki

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