63b641a068
This interpolation method was previously removed by commit fbf00209.
The intention of this method is to provide a slip-like wall boundary
condition for the velocity when interpolated to the location of a
Lagrangian element. This is difficult because any velocity which points
through the wall can cause a drag model and a rebound wall interaction
to "fight"; i.e., the drag pushes the particle to the wall, the wall
bounces it back. This can result in the program hanging.
This method extrapolates a vector field to the wall points and then
modifies the result so that it does not point through the wall. It does
this by rotating the vectors towards the (reversed) point normal. The
result is also scaled so that is reduced to zero if the necessary
rotation exceeds 90 degrees.
This provides an alternate resolution to bug report
https://bugs.openfoam.org/view.php?id=2826
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