Learning Forum

[solani]

Hello eveybody

Because of changing geometries in my simulation I need to use the VFOPT command but I am not sure where to put this command. Can anyone help?

Here is my code so far:

SF,InnerInsulationSurface, rdsf,0.9,1 ! radiation settings
SPCTEMP, 1, 22 ! ambient temperature in case enclosure is open

stef,5.67e-8 ! stefan boltzman constant
toffst,273.15 ! temperature offset

VFOPT, new !forcing new calculation of few factors
hemiopt,10 ! resolution of view factor calculation
tunif,22 ! initial temperature

Thank you for your help

Ani

[Erik Kostson]

Hi

You would need to add an apdl command object under the thermal solution and use it for all load steps:

See here for some info:

Thank you

Erik

[solani]

Thank you Erik for your very very fast reply. I selected the wanted step for my APDL command. But now I am a bit confused: What are load steps? Equals the number of load steps to the number of Number of Steps that you can control in the Analysis Settings?
However what I wanted to ask in my post is the following: Does it matter where I put the VROPT command? So like this

SF,InnerInsulationSurface, rdsf,0.9,1 ! radiation settings
SPCTEMP, 1, 22 ! ambient temperature in case enclosure is open

stef,5.67e-8! stefan boltzman constant
toffst,273.15! temperature offset

VFOPT, new !forcing new calculation of few factors
hemiopt,10 ! resolution of view factor calculation
tunif,22 ! initial temperature
or like this
VFOPT, new !forcing new calculation of few factors

SF,InnerInsulationSurface, rdsf,0.9,1 ! radiation settings
SPCTEMP, 1, 22 ! ambient temperature in case enclosure is open

stef,5.67e-8! stefan boltzman constant
toffst,273.15! temperature offset


hemiopt,10 ! resolution of view factor calculation
tunif,22 ! initial temperature
I know from Python or Java that the place in the code matters. I thought it would be the same for Ansys. Therefore my question is where to put the VFOPT command in the code.
Thank you again in advance.