input of a variable which is changing
Posted 2024年3月19日 GMT+1 16:531 Reply
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Hello
I am dealing with heat transfer of a food product placed in a blast chiller. I have to input the external temperature of the chiller/ temperatuer of the cool air. but it is changing its not a single value like when i open a door to put the sample it increases say to -10 and then later it goes -20, -30 until it stabilizes say to -35. how do i input thi sin comsol? please help. thanks
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Hi Anjelina,
I suggest that you use anInterpolationfunction for this purpose. You can use linear interpolation or some other interpolation function to get the values between the entered times and temperatures that you specify in the table in theSettingswindow for theInterpolationfunction. UsedegC
(degrees C) as the unit for the function ands
(seconds) as the unit for the argument, for example.
With theInterpolationfunction's default name,int1
, then add aTemperatureboundary condition to the boundary or boundaries that represent the opened door. There you enterint1(t)
as the temperature, which will then be interpolated according to your entered values during a time-dependent simulation.
Best regards,
Magnus
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