Compute distance to wall by solving a 3d diffusion equation. Solve

$\divs ( \grad \varia ) = -1$

Detailed Description

Compute distance to wall by solving a 3d diffusion equation. Solve

$\divs ( \grad \varia ) = -1$

with:

$\varia_|b = 0$ at the wall
$\grad \varia \cdot \vect{n} = 0$ elsewhere The wall distance is then equal to:
$d \simeq -|\grad \varia | + \sqrt{ \grad \varia \cdot \grad \varia +2 \varia }$

Function/Subroutine Documentation

subroutine distpr ( integer, dimension(nfabor) itypfb )

Parameters

[in] itypfb boundary face types