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Time-Dependent Temperature Piecewise Function Providing Unusual Result
Posted Feb 6, 2023, 12:15 p.m. EST Heat Transfer, Studies & Solvers 0 Replies
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Hello COMSOL community,
I am attempting to model a time-dependent temperature boundary condition in COMSOL. For half the day, the temperature at this boundary is at a constant 280K, while for the other half of the day, the temperature is at a constant 22.5K.
To test the validity of the piecewise function, I first created a piecewise function from t = 1h to t =12h in which the temperature was set at 280K, and then inputted this piecewise function as the boundary temperature. In other words, the piecewise function puts out a constant temperature value of 280K for hours 1 through 12. I then ran the simulation for 12 hours. To compare results, I then inputted "280K" as my boundary temperature value in place of the piecewise function.
However, I obtained two different results, which shouldn't occur. Can anyone shed some light on what is occurring? Thank you.
Hello Ethan Anderson
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