Next Article in Journal
Analysis of Vaneless Diffuser Stall Instability in a Centrifugal Compressor
Previous Article in Journal
A POD-Based Procedure for the Split of Unsteady Losses of an LPT Cascade
Article Menu

Export Article

Open AccessArticle
Int. J. Turbomach. Propuls. Power 2017, 2(4), 18; doi:10.3390/ijtpp2040018

Investigation on the Flow in a Rotor-Stator Cavity with Centripetal Through-Flow

Department of Mechanical Engineering, University of Duisburg-Essen, 47057 Duisburg, Germany
This paper is an extended version of our paper in Proceedings of the European Turbomachinery Conference ETC12, 2017, Paper No. 97.
*
Author to whom correspondence should be addressed.
Academic Editor: Claus Sieverding
Received: 31 July 2017 / Revised: 2 October 2017 / Accepted: 6 October 2017 / Published: 19 October 2017
View Full-Text   |   Download PDF [8277 KB, uploaded 19 October 2017]   |  

Abstract

Daily and Nece distinguished four flow regimes in an enclosed rotor-stator cavity, which are dependent on the circumferential Reynolds number and dimensionless axial gap width. A diagram of the different flow regimes including the respective mean profiles for both tangential and radial velocity was developed. The coefficients for the different flow regimes have also been correlated. In centrifugal pumps and turbines, the centripetal through-flow is quite common from the outer radius of the impeller to the impeller eye, which has a strong influence on the radial pressure distribution, axial thrust and frictional torque. The influence of the centripetal through-flow on the cavity flow with different circumferential Reynolds numbers and dimensionless axial gap width is not sufficiently investigated. It is also quite important to convert the 2D Daily and Nece diagram into 3D by introducing the through-flow coefficient. In order to investigate the impact of the centripetal through-flow, a test rig is designed and built up at the University of Duisburg-Essen. The design of the test rig is described. The impact of the above mentioned parameters on the velocity profile, pressure distribution, axial thrust and frictional torque are presented and analyzed in this paper. The 3D Daily and Nece diagram introducing the through-flow coefficient is also organized in this paper. View Full-Text
Keywords: rotor-stator cavity; centripetal through-flow; axial thrust; frictional torque rotor-stator cavity; centripetal through-flow; axial thrust; frictional torque
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Hu, B.; Brillert, D.; Dohmen, H.J.; Benra, F.-K. Investigation on the Flow in a Rotor-Stator Cavity with Centripetal Through-Flow. Int. J. Turbomach. Propuls. Power 2017, 2, 18.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Turbomach. Propuls. Power EISSN 2504-186X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top