Learning Forum

[Shivansh Karanwal]

Hello everyone!

I am doing a simulation of 2D moving gaussion heat source in ANSYS Transient Thermal and I am unable to get a smooth temparture curve. The values are deviating a lot. Initally I started with program controlled and then when I was geting huge spikes in the curve I then switched to iterative solver. I have tried to reduce the timestep but still the curve is all spiky.

So what can I do to optimise the time step for my problem so that I can get a convergent graph. 

Also is there a way to check simultaneously that the solution is converging or not like it could be seen in ANSYS Fluent with curves continously plotting. 

I am attaching a few pictures of the settings and APDL Commands that I am giving for refernce.

#ansysmechanicalapdl #ansysmechanical #transientthermal #thermalanalysis #gaussianheatsource

[dlooman]

The problem is you are running in batch mode.  If you were in the APDL gui and you cut and pasted your commands into the input window (or input them from a file), then you would see a real time convergence graph.  You could add /gst,on,on to your commands.  That would write a file.gst which could be interrogated in the APDL gui with the Results Tracker while the job was running.  Easiest of all is to just look at the solution output (Solution Information) as the job is running.

[Shivansh Karanwal]

Well how can I switch to APDL GUI from this. 

Also I try to look at solution Information but this is what I get

I have tried to look the solve.out file also but it just dosent open at all. Please help me.

This kind of graph I have got recently after waiting for alomost 1 week and then plotting the temprature values

[dlooman]

You would have to open the APDL gui in a separate Ansys session.  

Is solve.out perhaps too big for an editor to open?  Perhaps you should just run the job for 10 or 20 secs to see what is going on.