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{ REGIONAL_EQUATIONS.PDE

This sample shows how to apply different equations in different regions.

In this sample, the equations are essentially the same and the differing

conductivities could be dealt with by regionally defined parameters, but

this methodology can be used to apply different equations in the regions.

FlexPDE will assume flux continuity at the material boundary.

Care should be taken that this is correct for the application.

}

Title 'Regional Equations'

Variables Temp

Definitions

A = 0

B = 0

kA = 1

kB = 10

eqnA = div(kA*grad(Temp))

eqnB = div(kB*grad(Temp))

Equations

Temp: A*eqnA + B*eqnB = 0

Boundaries

Region 'A'

A = 1

start(0,0) line to (1,0) to (1,1) to (0,1)

value(Temp) = 100

line to close

Region 'B'

B = 1

start(2,0) line to (1,0) to (1,1) to (2,1)

value(Temp) = 0

line to close

Plots

Contour(Temp) painted

End