Tufting can be considered a technique for flow visualization, used in aeronautics flight testing to study air flow direction, strength, and boundary layer properties.

These crevasses stretch across the glacier transverse to the flow direction, or cross-glacier.

The first helices (in the flow direction) are small-diameter tubes, wrapped in large diameter turns.

Data flow direction may be selected on a line-by-line basis with intermixed input and output lines within the same port.

This takes advantage of a flow direction network that can be processed to trace the flow of water downstream.