Thermal movement

Posted by: baskar1982

Thermal movement - 07/15/12 05:56 AM

Dear Experts,

1) i asked to provide thermal movement for a flange on metering skid tie-in-point. may i know how to get a thermal movement (Dx, Dy, Dz) for a nozzle in Caesar II?


2) A metering skid operates @ 150°F and 80°F and there is a bypass line. how to assign the temperatures for the operating temperature load cases for these lines when we consider solar radiation temperature?


Thanks & Regards

Baskar
Posted by: Richard Ay

Re: Thermal movement - 07/15/12 08:20 AM

1) No one here can help you with the magnitide of the thermal movements. Either you have to model the skid, at temperature, so that CAESAR II can determine these movements, or someone performs an external evaluation and provides these movements to you.

Once you have the movements, specify them as predefined displacements at the nozzle node. Make sure you specify all 6 values, using zero for the DOFs that have no movement.


2) You have to specify the temperature of the pipe, it appears for two cases (1) at 150 and (2) at 80. If you're considering solar radiation may affect these temperature values, that is something that must be determined outside of c2, and then you would specify values different from the 150 and 80. c2 does not address solar radiation.