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Problem with definition of two-variable function
Posted 17.10.2011, 11:09 GMT-4 Low-Frequency Electromagnetics, Heat Transfer & Phase Change, Materials, Parameters, Variables, & Functions Version 4.1, Version 4.2 1 Reply
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I would like to ask a question how to define a two-variable function. I am solving an Induction heating problem using HB curve, I need to use several HB curves depending of temperature of heated material (some specific steel) during the simulation. I have available six measured HB curves for temperatures of 25, 100, 200, 400, 600 and 700 ° C written in table form. I don't know how to call specific interpolation of HB function H=f(B,T) where H is magnetic field, B magnetic flux density and T is temperature. Another way to less accurate soultion may be a definition of some "trigger" to call a exact HB curve when temperature will reach next level (f.e. 25 to 100C and so on). Is it possible? Thank you for responding.
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you could switch the functions by using boolean expressions like:
H = H25(B)*(T<=25) + H100(B)*(T>25 & T<=100) + ....
This way it might even be possible to introduce an interpolation between the discrete temperature curves.
Cheers
Edgar