Abstract
To investigate the air flow behaviour in an open-end spinning rotor, at the first stage, the direction and distribution of an air flow have been determined in a modelled rotorwhich is, in size, twice as large as the practical ones. The effects of spinning conditions, i.e., number of air exhausting holes, rotor speed, etc. on an air flow behaviour have also been observed by determining the distribution of the static pressure, that of radial angle, and tangential velocity. The experimental results were summarized as follows :
1) A nearly equal static pressure was obtained on the same radius in the rotor.
2) The pressure gradient near the rotor center and near the rotor wall was smallerthan that of the other parts.
3) The tangential velocity of the air flow was equal irrespective of the measured plane, the rotor velocity, and the number of exhausting holes.
4) While the forced vortex motion was observed by the rotor rotation near both therotor axis and the outer wall, the free vortex motion was observed between these regions.
5) The angle distribution in the direction of the radius was equal irrespective ofthe measured plane, the rotor velocity, and the number of exhausting holes.
