Learning Forum

[BeEazy]

How is the transient period of a Steady State Analysis system different from an explicit Transient State Analysis system? In my Steady State temperature graph, there is a brief transient period where the temperature oscillates in the first ~20 seconds:

However, when I run a Transient Analysis system with the same setup, the first 5 seconds look completely different:

 

So what is the main difference between the two analysis systems?

[Sai Deogekar]

Hi,nThat seems a bit strange! Transient thermal analysis considers the thermal capacitance of a material (also known as thermal inertia), while Steady State analysis only considers the Thermal Conductivity and ignore the Capacitance. So if you do a Transient Thermal analysis for a long enough duration, its solution should match with the Steady-State Thermal Analysis.nI am not sure why you are getting the results that you do. Could you share the geometry and the boundary conditions in your problem?nThanks,nSain