4. Work exchanged between fluid and rotor
Energy can only be transmitted in useful form between the rotor and the fluid through the work of the torque C applied to the fluid in the moving channels.
We therefore propose to calculate this work and analyze its distribution between the different forms of energy that the fluid may possess.
4.1 Work exchanged across the rotor
4.1.1 Shaft work (or theoretical mass energy)
Each flow tube in the moving space can be considered as an elementary channel frozen in...
The Ultimate Scientific and Technical Reference
This article is included in
Hydraulic, aerodynamic and thermal machines
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Work exchanged between fluid and rotor
Conclusion
Bibliography
Websites
Profluid :
French association for pumps, mixers, compressors and valves
Standards
AFNOR standards : https://www.boutique.afnor.org/norme/
- Centrifugal pumps with axial suction PN10 with support under pump casing – Nominal operating point, main dimensions, designation system. - NF EN 733 - août 1995
- Technical specifications for centrifugal pumps – Class II. - NF EN ISO 5199 - mai 2002
- Pompes...
Laboratories – Design offices – Schools – Research centers (non-exhaustive list)
CNAM (Conservatoire National des Arts et Métiers) Turbomachinery Chair
Appendix: Overview of unsteady effects in a turbomachine
1. Centrifugal pumps
Consider a pump impeller feeding directly into a volute casing. In order to neglect three-dimensional effects, the flow is assumed to be plane, i.e. the thickness of the flow in figure 1...
Bibliography specific to Appendix A
[a] BOULBIN (F.), KERMAREC (J.), PLUVIOSE (M.): Turbine blade forces due to partial admission, Recent advances in compressor and turbine aerothermodynamics, SFM (1992).
[b] PLUVIOSE (M.), PÉRILHON (C.), TOUSSAINT (M.): Machines à fluides, Ellipses (2002).
[c] ZACCARIA (M.), LAKSHMINARAYANA (B.): Unsteady flow field due to nozzle wake interaction with...
The Ultimate Scientific and Technical Reference
