F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINEERING IN GENERAL
 F15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
 F15D
FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS (fluid-circuit elements F15C)
 F15D

Note(s)

This sub-class comprises boundary-layer control and other arrangements and methods, not provided for in other classes, for influencing the flow of fluids relative to constraining surfaces and after leaving these surfaces, e.g. producing or removing turbulence, deflecting jets, guiding flow through bends in conduits, affecting distribution of fluid in a conduit, reducing fluid friction.

 F15D 1/00
Influencing the flow of fluids
 F15D 1/02
·  in pipes or conduits
 F15D 1/04
·  ·  Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements or elbows with respect to flow, specially for reducing losses of flow
 F15D 1/06
·  ·  by influencing the boundary layer
 F15D 1/08
·  of jets leaving an orifice (nozzles or outlets with means for mechanically breaking-up or deflecting the jet B05B, e.g. B05B 1/26)
 F15D 1/10
·  around bodies of solid material
 F15D 1/12
·  ·  by influencing the boundary layer
 F15D 1/14
·  Diverting flow into alternative channels (in hydraulic engineering E02B)