# collect samples for pdf estimation from ic1 case
# sampling region (xs, xe) hard-coded for ic1 case

[u, v, w, y]

# field_name (arg_name=arg (, pair)* ) = expression

c (export=true, xs=176, xe=400, xpts="200 220 240 260 280 300") = 1.0 - y

fsd (export=true, xs=176, xe=400) = sqrt (sqr(ddx(c)) + sqr(ddy(c)) + sqr(ddz(c)))

nx = - ddx(c) / fsd
ny = - ddy(c) / fsd
nz = - ddz(c) / fsd

divn (export=true, xs=176, xe=400) = ddx(nx) + ddy(ny) + ddz(nz)

avg { c, fsd, divn }