Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model

R.J.H. Dijkers, B. Fumex, J.G.H. Op de Woerd, N.P. Kruyt, H.W.M. Hoeijmakers

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)

Abstract

The occurrence of cavitation is one of the main limiting factors in the operation and design of centrifugal pumps. In this paper a model for the prediction of sheet cavitation is described. This model has been implemented in a three-dimensional finite-element package, employing the potential-flow approximation of the governing flow equations. At the interface between vapor and liquid, pressure equilibrium is required. The closure region of the cavity is modeled as the collapse of a bubble, whose motion is described by the Rayleigh-Plesset equation. The effect of displacement of the flow due to presence of the sheet cavity is incorporated by the transpiration technique. This is a linearised approach which is well-known from techniques for coupling inviscid-flow methods to boundary-layer methods. The model gives the location of the sheet cavity (if present); its length is thus also predicted. The model has been validated by comparing sheet cavitation at the blades of a centrifugal pump impeller, obtained from CFD-computations and from visual observations in a model test.

Original languageEnglish
Title of host publication2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages1233-1238
Number of pages6
ISBN (Electronic)0-7918-3760-2
ISBN (Print)0791837602, 9780791837603
DOIs
Publication statusPublished - 1 Dec 2005
Event2005 ASME Fluids Engineering Division Summer Meeting, FEDSM 2005 - Houston, United States
Duration: 19 Jun 200523 Jun 2005

Conference

Conference2005 ASME Fluids Engineering Division Summer Meeting, FEDSM 2005
Abbreviated titleFEDSM
CountryUnited States
CityHouston
Period19/06/0523/06/05

Fingerprint

Potential flow
Centrifugal pumps
Cavitation
Transpiration
Turbomachine blades
Computational fluid dynamics
Boundary layers
Vapors
Liquids

Keywords

  • Cavitation
  • Centrifugal pumps
  • CFD analysis
  • NPSH
  • Potential flow

Cite this

Dijkers, R. J. H., Fumex, B., Op de Woerd, J. G. H., Kruyt, N. P., & Hoeijmakers, H. W. M. (2005). Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model. In 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005 (pp. 1233-1238). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/FEDSM2005-77240
Dijkers, R.J.H. ; Fumex, B. ; Op de Woerd, J.G.H. ; Kruyt, N.P. ; Hoeijmakers, H.W.M. / Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model. 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005. American Society of Mechanical Engineers (ASME), 2005. pp. 1233-1238
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title = "Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model",
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Dijkers, RJH, Fumex, B, Op de Woerd, JGH, Kruyt, NP & Hoeijmakers, HWM 2005, Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model. in 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005. American Society of Mechanical Engineers (ASME), pp. 1233-1238, 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM 2005, Houston, United States, 19/06/05. https://doi.org/10.1115/FEDSM2005-77240

Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model. / Dijkers, R.J.H.; Fumex, B.; Op de Woerd, J.G.H.; Kruyt, N.P.; Hoeijmakers, H.W.M.

2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005. American Society of Mechanical Engineers (ASME), 2005. p. 1233-1238.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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N2 - The occurrence of cavitation is one of the main limiting factors in the operation and design of centrifugal pumps. In this paper a model for the prediction of sheet cavitation is described. This model has been implemented in a three-dimensional finite-element package, employing the potential-flow approximation of the governing flow equations. At the interface between vapor and liquid, pressure equilibrium is required. The closure region of the cavity is modeled as the collapse of a bubble, whose motion is described by the Rayleigh-Plesset equation. The effect of displacement of the flow due to presence of the sheet cavity is incorporated by the transpiration technique. This is a linearised approach which is well-known from techniques for coupling inviscid-flow methods to boundary-layer methods. The model gives the location of the sheet cavity (if present); its length is thus also predicted. The model has been validated by comparing sheet cavitation at the blades of a centrifugal pump impeller, obtained from CFD-computations and from visual observations in a model test.

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Dijkers RJH, Fumex B, Op de Woerd JGH, Kruyt NP, Hoeijmakers HWM. Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model. In 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005. American Society of Mechanical Engineers (ASME). 2005. p. 1233-1238 https://doi.org/10.1115/FEDSM2005-77240