Hi,

I am analysing a vessels nozzle which is connected to psv valve for wind analysis. The PSV is connected to the top most nozzle of the vessel which is 57ft high in the air. When i run the analysis for wind. I check the displacement for wind in X and Z direction. My disp is differend in X and Z direction, with same wind speed. I thought the disp should be same at node point in X and Z direction.

Thank you for Help
Gaurav Patel
Piping Stress Engineer

If your model is symmetric in the X and Z directions, and your wind input is identical, I agree with your assumption. If you can't get this worked out send your model to techsupport@coade.com, but note that due to the lack of power following the Hurricane our response time has slowed considerably.

Hi Glindepp
I think you already model PSV discharge line in either X or Z direction.
If so in that case wind expose area for X & Z direction should be different & even piping rigidity in X & Z direction should differ so you can get different displacement value in X & Z direction.

As Richard sir already mention if model is symmetric result should be the same.