I am trying to simulate the temperature profile around a plasmonic gold plate in 2D surrounded by water. I am using 2 modules ewfd and ht in solids and fluids. The input field is getting totally internally reflected at the glass-water interface. The water surrounding the gold plate is open to the air and is initially at the same temperature as the surrounding. I am running a stationary study. I expect the temperature of the gold to be significantly larger than the surrounding water as the thermal conductivity of the gold is much larger than the water. But the temperature difference between the gold and the water is approx 0.02 K. Please let me know about the possible mistake in the implementation of the module and how to move forward from here.
Also when I run a time dependent study, the temperature keeps on increasing and never equilibrates.