Induction heating of a tube

This is an example of an axisymmetric induction heating application. The coil is excited at 1000 Ampere-turns at a frequency of 300 Hz. This heats up the aluminum tube due to the eddy-current losses. View the animation to see how the tube heats up over time. The solvers used are the 2D transient thermal solver, which is coupled to the 2D time-harmonic magnetic solver (the same solver used in MagNet). Symmetry was used to solve only the upper half of the model with the coil on the right of the tube. In this case the skin depth is roughly equal to the wall thickness so that the tube heats up more evenly. The aluminum's conductivity is temperature dependant, so the penetration of the magnetic field increases as the tube is heated.

Results

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This graph shows how the temperature in the center of the tube increases over time and asymptotically approaches the steady state solution.

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This field plot illustrates the field distribution at the last solved time instant, which is approaching the steady state solution.