Yes, as it can flow in all direction.
air flow is toward floor. blower is below filter. blower pulls air thru filter.
If your talking about fluid or air heat rises.
High pressure air travels "downwards and clockwise"
the arrow points in the direction of air flow.
something that can detect what direction the air is flowing
If your talking about fluid or air heat rises.
the gulf of mexico
flow to
Outwards
it is the difference between local flow direction and free stream direction of atmospheric air
I have been told it is toward the back of the vehicle.