### 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 language | English |
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Title of host publication | 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005 |

Publisher | American Society of Mechanical Engineers (ASME) |

Pages | 1233-1238 |

Number of pages | 6 |

ISBN (Electronic) | 0-7918-3760-2 |

ISBN (Print) | 0791837602, 9780791837603 |

DOIs | |

Publication status | Published - 1 Dec 2005 |

Event | 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM 2005 - Houston, United States Duration: 19 Jun 2005 → 23 Jun 2005 |

### Conference

Conference | 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM 2005 |
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Abbreviated title | FEDSM |

Country | United States |

City | Houston |

Period | 19/06/05 → 23/06/05 |

### Fingerprint

### Keywords

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

### Cite this

*2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005*(pp. 1233-1238). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/FEDSM2005-77240

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*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.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Prediction of sheet cavitation in a centrifugal pump impeller with the three-dimensional potential-flow model

AU - Dijkers, R.J.H.

AU - Fumex, B.

AU - Op de Woerd, J.G.H.

AU - Kruyt, N.P.

AU - Hoeijmakers, H.W.M.

PY - 2005/12/1

Y1 - 2005/12/1

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.

AB - 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.

KW - Cavitation

KW - Centrifugal pumps

KW - CFD analysis

KW - NPSH

KW - Potential flow

UR - http://www.scopus.com/inward/record.url?scp=33646578816&partnerID=8YFLogxK

U2 - 10.1115/FEDSM2005-77240

DO - 10.1115/FEDSM2005-77240

M3 - Conference contribution

SN - 0791837602

SN - 9780791837603

SP - 1233

EP - 1238

BT - 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005

PB - American Society of Mechanical Engineers (ASME)

ER -