0 Replies Latest reply on Mar 9, 2012 4:44 PM by Alessandro Tornincasa

    Determining pressure drop precisely

    Alessandro Tornincasa

      Hi,

      I'm performing an analysis on attached model. Here is a picture of it:

      Flow.jpg

       

      These are my pieces of information: water enters this circuit at 3 bar pressure. Water has a 20 M^3/h flow rate.

       

      I'd like to precisely calculate pressure drop.

       

      What's the best way to accomplish it ?

       

      I've put a static pressure condition (3 bar), and an outlet flow rate condition (20 M^3/h).

       

      Is this correct ? Would there be better conditions to get te best precision in determing pressure drop ?

       

      I'm asking because when I'm perfornming this kind of analyses my pressure drop results are always 30 % more than those that are experimentally measured.

       

      I don't know wether I should make my mesh finer at the inlet and outlet, or also where the flow passage tightens.

       

      Thanks,

       

      Alex