I am trying to solve a 2D planer and 1D line heat transfer model. The 2D model has a heat generating source in the middle and is surrounded by various materials with different thermal conductivities. The outer face is a fixed temperature (subject to coolant, this will be adjusted later). The 2D model gives us results that are similar ( ~2-3%) to the results we get with Abaqus. We are on a demo license for COMSOL to see if we want to purchase it and use it to replace the analysis that we currently do with Abaqus. The 2D model is fine so far. However, we also use 1D models in Abaqus to quickly evaluate parameter changes and so want to be sure that COMSOL povides similar results. COMSOL does not. The resulting peak temperature in our source is approximately twice the tempereature as we get in the 2D (1000+ K compared to ~400 K). Is there any reason that the 1D would solve the exact same parameters so differently?
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