Linear temperature distribution
Linear temperature distribution
(OP)
Hello all.
I know temperature in a pipe at both ends of the tube and i would like to apply a linear distribution of temperature along the line (I will make a thermal-structural coupled analisys). Can someone help me?
I can do it node by node with a little pdl program, but i can't understand if there is a simplest way.
Thanks.
I know temperature in a pipe at both ends of the tube and i would like to apply a linear distribution of temperature along the line (I will make a thermal-structural coupled analisys). Can someone help me?
I can do it node by node with a little pdl program, but i can't understand if there is a simplest way.
Thanks.





RE: Linear temperature distribution
If you're using PDL code then is your front-end Patran? The simplest route may depend on the solver too, eg if it's Abaqus then you can create a function (specifying the spatial variation, eg as a table) and then pick this function when applying your temperature over the area. Other codes like Nastran and Femap have similar functionality like "=26*xnd(i!)" for using the x-coordinate of the current node, for example.
The best route can be to find out how your solver handles this, then work back through the front-end's translation table for different solvers to see how to put it in...
Good luck!
MToft
RE: Linear temperature distribution
Can you help me?
Thanks
RE: Linear temperature distribution
corus
RE: Linear temperature distribution
Not necessarily, depends on the geometry and/or the direction in which the temperature gradient acts. Sounds easy enough to write a bit of APDL and apply the temperatures through a series of either "D" or body force "BF#" commands. Once these are applied and solved (antype,static) you can use the "LDRE" command to read the thermal loadcase in (jobname.rth) and apply as a structural-thermal load.
Cheers,
-- drej --