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2. Generalization to a real compression stage made up of annular grids
2.1 Simplified radial balance in the axial machine
The purpose of radial balance is to determine the position of a fluid path as it passes through the machine. When radial equilibrium is not respected, the trajectory moves towards or away from the machine axis, following a complex movement that makes it impossible to position it as a function of the distance travelled.
The laws already examined for constant axial velocity can no longer be used. For simplicity's sake, we try to respect: C r = 0 for the entire flow.
The main flow directions are designated a (axial), u (tangential), r (radial) as shown in figure 4...
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Generalization to a real compression stage made up of annular grids
Bibliography
General works
Standards and norms
Unlike centrifugal pumps, there are no construction standards for propeller pumps.
Directory
Manufacturers – Manufacturers holding the lion's share of the propeller pump and circulator market
Egger , Ensival-Moret, Goulds, KSB, Lewis, Lawrence, SGL, Weir-Warmann
Organizations – Federations – Associations (non-exhaustive list)
The Europump association (Belgium) brings together the majority of European manufacturers and enjoys a certain authority.
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