1 Reply Latest reply on Oct 28, 2013 12:02 PM by Jared Conway

    Heat loss from a hot water vessel

    Will Griffiths

      Hi,

       

      I'm new to SW Simulation and am trying to model a hot water vessel to determine heat loss. The trouble is that I appear to get wildly different results when playing about, these range from unrealistically low to high and I therefore don't trust the results.

       

      It's a simple model as far as I'm concerned - I've created a block of PIR insulation and extruded a cavity inside, then placed a water volume inside it. I then assigned a temperature to the water volume surface (45 degrees C) and a convection coefficient of 7.7 W/m2K to all external surfaces of the insulation. Clearly, I've ignored the metal cylinder itself.

       

      Any thoughts on why results seem to fluctuate? I've used a curvature based mesh on the finest setting

       

      Thanks

       

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