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 |
|---|---|
| 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 |
|---|---|
| Abbreviated title | FEDSM |
| Country | United States |
| City | Houston |
| Period | 19/06/05 → 23/06/05 |
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Keywords
- Cavitation
- Centrifugal pumps
- CFD analysis
- NPSH
- Potential flow
Cite this
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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 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
AN - SCOPUS:33646578816
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 -