Hornbostel - Sachs
Stopped side-blown flutes
The air itself is the vibrator in the primary sense. The standing waves are significantly confined within the instrument itself. The player blows against the sharp rim of a hole in the side of a tube. The distal end of the tube is stopped. The instrument has no fingerholes.
Stopped side-blown flutes without fingerholes
Stopped side-blown flutes without fingerholes, with fixed stopped lower end
Stopped side-blown flutes without fingerholes, adjustable stopped lower end