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Use of global parameters in expressions
Posted 14 mai 2016, 07:16 UTC−4 Parameters, Variables, & Functions Version 4.2 0 Replies
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I am using Comsol 4.2.
I have defined global parameters, such as L, H, W etc. And i have the global parameters ax = 5[m] and x0 = L/2-(N-1)/2*ax.
Also I have defined an analytical solution: V_ref = 1[A]*rho0/(2*pi)*(1/abs(x-x1)-1/abs(x-x2))
Arguments are x, x1 and x2
Then under Data sets i defined that the 1D function's argument x goes from 100 to 600.
Now I want to plat the function in a line Graph. The Expression is: abs(V_ref(x,x0+15*ax,x0+25*ax))
This expression can not be evaluated.
Error message:
Failed to evaluate variable.
- Variable x0
- Global scope:
Failed to evaluate expression.
- Expression: abs(V_ref(x,(x0+(15*ax)),(x0+(25*ax))))
Failed to evaluate expression.
- Expression: abs(V_ref(x,x0+15*ax,x0+25*ax))
- Plot: lngr1 (Line graph)
Can anyone help me? I do not see the problem that COMSOL has
Hello Sina
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