# block.gp.force.reaction

Syntax

v/f = block.gp.force.reaction(bgpp<,i>)

Get the reaction force at the gridpoint

Returns: v or f - reaction force vector or component bgpp - block gridpoint pointer i - optional index of component

## Component Access

f = block.gp.force.reaction.x(bdpp)

Get the $$x$$-component of the reaction force vector.

Returns: f - $$x$$-component of the reaction force vector bggp - gridpoint pointer
f = block.gp.force.reaction.y(bdpp)

Get the $$y$$-component of the reaction force vector.

Returns: f - $$y$$-component of the reaction force vector bggp - gridpoint pointer
f = block.gp.force.reaction.z(bdpp)

Get the $$z$$-component of the reaction force vector.

Returns: f - $$z$$-component of the reaction force vector bggp - gridpoint pointer