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Problem Defining Time Dependent Material Properties
Posted 20.09.2015, 07:55 GMT-4 Materials Version 5.0 0 Replies
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I want to define some material properties of the concrete in my model ( Heat Capacity & Thermal Conductivity) which change with time.
I have define these time dependent as a piecewise function (pw1= Heat Capacity & pw2= Thermal Conductivity) and have defined the time (t1= expression: 1200 min) as a global variable. then I assumed (t1) as the argument for pw1 & pw2;
But when I define "pw1 & pw2" in the concrete material value it says " Uknown variable pw1 & pw2" and the comsol does not identify my values.
Please help me how could I define this issue properly.
God bless you all and thanks for your help
Hello Mehran
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