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# 3d_ploton

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# 3d_ploton   { 3D_PLOTON.PDE

This problem shows some of the possible 'ON' qualifiers for 3D plots.

 }   title '3D Test -- Plot Qualifiers'   coordinates    cartesian3   Variables    u   definitions    k = 0.1    heat = 4   equations    U:     div(K*grad(u)) + heat   = 0   extrusion   surface z = 0   surface z = 0.8-0.3*(x^2+y^2)   surface z = 1.0-0.3*(x^2+y^2)  boundaries

region 1 'outer'

layer 2 k = 1

start(-1,-1)

value(u) = 0

line to (1,-1) to (1,1) to (-1,1) to close

region 2 'plug'

layer 2 k = 1

start 'dot' (0.5,0.5) arc(center=0,0) angle=360

plots

grid(x,y,z) on region 1 as "Only Region 1, both layers"

grid(x,y,z) on region 'plug' on layer 2 as "Region 2 Layer 2"

grid(x,y,z) on region 'plug' on layers 1,2 paintregions as "Region 2, both layers"

grid(y,z) on x=0 on 'plug'   as "Cut plane on region 2"

contour(u) on x=0.51   on layer 2 as "Solution on X-cut in layer 2"

contour(u) on z=0.51   on region 2 as "Solution on Z-cut in region 2"

contour(u) on surface 2 on region 2         as "Solution on paraboloidal layer interface"

vector(grad(u)) on surface 2 on 'outer' as "Flux on layer interface in region 1"

end