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7/25/2019 Initial&Boundary Condit 7
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1D
2D
3D
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Boundary conditions
1gP= Prescribed pressure. When the pressure isspeciied as a known unction o position and time!irst kind or"irichlet boundary condition#
2g=nu Prescribed mass flux. When the total masslu$ is known on the boundary!second kind%
&on 'eumann condition#
(or an impervious boundary
!i.e.% a no-flow boundary condition#
02 =g
on
on
on
7/25/2019 Initial&Boundary Condit 7
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)
Mixed boundary condition.* boundary condition o mi$ed kind !or third kind)
3ggpg up =+ nu
3,, ggg up *re given unctions
Robin or Danwerts boundary condition
on
!"e initial condition
)()0,( 0 xx pp = x
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