Abstract: This fin is intended to be installed in a protruding manner inside a discharge pipe of a hydraulic machine. The fin includes a first face which has holes and a second face which is solid. The fin defines by itself, between the first face and the second face, a cavity connecting the outside of the discharge pipe to the holes in the first face.

Abstract: This hydraulic machine comprises a wheel supported by a shaft (5), the wheel and the shaft being able to rotate about a vertical axis (X5) while a radial hydrostatic or hydrodynamic bearing (100) is formed between, on the one hand, a radial peripheral surface (52) of the shaft and, on the other hand, an internal radial surface (102) of a member (101) that is fixed relative to the vertical axis. The bearing (100) extends between two edges (121, 122) which, in normal operation, constitute regions for the removal of a film of water formed in the bearing. At least one cavity (130) is created in the fixed member (101) and opens onto its internal radial surface (102) near a first edge (122) of the bearing. The machine comprises means (131, 132, 133) for placing the cavity (130) in fluidic communication with a volume (V1) situated outside the bearing near the second edge (121) of the bearing (100).

Abstract: This fin is intended to be installed in a protruding manner inside a discharge pipe of a hydraulic machine. The fin includes a first face which has holes and a second face which is solid. The fin defines by itself, between the first face and the second face, a cavity connecting the outside of the discharge pipe to the holes in the first face.

Abstract: This hydraulic machine comprises a wheel supported by a shaft (5), the wheel and the shaft being able to rotate about a vertical axis (X5) while a radial hydrostatic or hydrodynamic bearing (100) is formed between, on the one hand, a radial peripheral surface (52) of the shaft and, on the other hand, an internal radial surface (102) of a member (101) that is fixed relative to the vertical axis. The bearing (100) extends between two edges (121, 122) which, in normal operation, constitute regions for the removal of a film of water formed in the bearing. At least one cavity (130) is created in the fixed member (101) and opens onto its internal radial surface (102) near a first edge (122) of the bearing. The machine comprises means (131, 132, 133) for placing the cavity (130) in fluidic communication with a volume (V1) situated outside the bearing near the second edge (121) of the bearing (100).