Abstract
The aim of this work is to quantify the blade roughness influence on the hydraulic performances of a mixed-flow pump. In this way the flow in a hydrodynamic tunnel equipped with a blade profile was analysed by measurements performed by the CREMHyG and numerical simulations with the code N3S (developed by ‘Electricité de France’). The roughness parameter z0 used in the simplified rough wall law was calibrated from the measured roughness for three Reynolds numbers and three rougimesses. The application to the pump flow was obtained for the scale model conditions (0.41). For the prototype pump conditions, a calibration was suggested but has to be refined by some other simulations.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Abbreviations
- Q n :
-
nominal flow rate
- k:
-
measured roughness
- u * :
-
shear velocity
- v :
-
kinetic viscosity
- L :
-
lenght scale (chord for the pump)
- x d :
-
separation point abscissa
- Z 0 :
-
roughness parameter
- U 1 :
-
tangential velocity on the wall
- ρ :
-
density
- U c :
-
neck speed
References
L Grimbert. Dérive des charactéristiques hydrauliques d’une roue de pompe; premières analyse de l’écoulement interne. Internal report EDF/DER HP-41/91.17
V.Moulin. Analyse complémentaire de l’écoulement dans une roue de pompe avec le code N3S. Internal report EDF/DER.HP-41/94/007.
C. Rebattet. Etude expérimentale de l’influence de la rugosité sur le comportement de la couche limite dans une veine. Rapport CREMHyG 1994.
J.P Chabard. Projet N3S de Mécanique des Fluides, Manuel théorique de la version 3. Internal report EDF/DER HE-41/91.30B.
F.M. White. Viscous Fluid Flow. McGraw-Hill, Inc, Second Edition.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Undreiner, S., Dueymes, E. (1996). Influence of the Blade Roughness on the Hydraulic Performance of a Mixed-Flow Pump. A Viscous Analysis. In: Cabrera, E., Espert, V., Martínez, F. (eds) Hydraulic Machinery and Cavitation. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-9385-9_43
Download citation
DOI: https://doi.org/10.1007/978-94-010-9385-9_43
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-9387-3
Online ISBN: 978-94-010-9385-9
eBook Packages: Springer Book Archive