METHOD AND DEVICE FOR ENHANCING OPERATING AND ECONOMICAL EFFICIENCY OF COMBINED METHODS OF CONTROL OF BOUNDARY LAYER Russian patent published in 2006 - IPC B63B1/34 

FIELD: combined methods of control of boundary layers.

SUBSTANCE: proposed method includes ejection of resistance-reducing agent into first liquid which is movable relative to wall; proposed method includes preparation of resistance-reducing agent contained in second liquid, passing the second liquid through vortex chamber for forming vortex inside this chamber, thus decreasing vortex of second liquid and ejection of second liquid into first one through ejector provided with slot in its wall. Preliminary preparation comes to passing the second liquid through nozzle generating the gradient of axial velocity inside second liquid containing additive as mixture or in solution in order to turn, level along flow and elongate molecules of resistance-reducing agent. Ejector slot includes Koande surface as its part. Device proposed for realization of this method includes nozzle, vortex chamber and ejector. Proposed method makes it possible to exclude destruction and "blowing-off" of first liquid and to reduce diffusion rate of resistance-reducing agent in first liquid.

EFFECT: enhanced efficiency.

22 cl, 4 dwg