Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser
We report a numerical study on the vaneless diffuser core flow instability in centrifugal compressors. The analysis is performed for the purpose of better understanding of the rotating stall flow mechanism in radial vaneless diffusers. Since the analysis is restricted to the two-dimensional core flo...
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| Format: | Article |
| Language: | English |
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Hindawi Limited
2006-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/IJRM/2006/56420 |
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doaj-50fe4403df3e42f5aadfa71bfcf394e42020-11-24T22:13:53ZengHindawi LimitedInternational Journal of Rotating Machinery1023-621X1542-30342006-01-01200610.1155/IJRM/2006/5642056420Two-Dimensional Rotating Stall Analysis in a Wide Vaneless DiffuserS. Ljevar0H. C. de Lange1A. A. van Steenhoven2Section of Energy Technology, Division Thermo Fluids Engineering, Department of Mechanical Engineering, Eindhoven University of Technology, Den Dolech 2, Eindhoven, MB 5600, The NetherlandsSection of Energy Technology, Division Thermo Fluids Engineering, Department of Mechanical Engineering, Eindhoven University of Technology, Den Dolech 2, Eindhoven, MB 5600, The NetherlandsSection of Energy Technology, Division Thermo Fluids Engineering, Department of Mechanical Engineering, Eindhoven University of Technology, Den Dolech 2, Eindhoven, MB 5600, The NetherlandsWe report a numerical study on the vaneless diffuser core flow instability in centrifugal compressors. The analysis is performed for the purpose of better understanding of the rotating stall flow mechanism in radial vaneless diffusers. Since the analysis is restricted to the two-dimensional core flow, the effect of the wall boundary layers is neglected. A commercial code with the standard incompressible viscous flow solver is applied to model the vaneless diffuser core flow in the plane parallel to the diffuser walls. At the diffuser inlet, rotating jet-wake velocity pattern is prescribed and at the diffuser outlet constant static pressure is assumed. Under these circumstances, two-dimensional rotating flow instability similar to rotating stall is found to exist. Performed parameter analysis reveals that this instability is strongly influenced by the diffuser geometry and the inlet and outlet flow conditions.http://dx.doi.org/10.1155/IJRM/2006/56420 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
S. Ljevar H. C. de Lange A. A. van Steenhoven |
| spellingShingle |
S. Ljevar H. C. de Lange A. A. van Steenhoven Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser International Journal of Rotating Machinery |
| author_facet |
S. Ljevar H. C. de Lange A. A. van Steenhoven |
| author_sort |
S. Ljevar |
| title |
Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser |
| title_short |
Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser |
| title_full |
Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser |
| title_fullStr |
Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser |
| title_full_unstemmed |
Two-Dimensional Rotating Stall Analysis in a Wide Vaneless Diffuser |
| title_sort |
two-dimensional rotating stall analysis in a wide vaneless diffuser |
| publisher |
Hindawi Limited |
| series |
International Journal of Rotating Machinery |
| issn |
1023-621X 1542-3034 |
| publishDate |
2006-01-01 |
| description |
We report a numerical study on the vaneless diffuser core flow
instability in centrifugal compressors. The analysis is performed
for the purpose of better understanding of the rotating stall flow
mechanism in radial vaneless diffusers. Since the analysis is
restricted to the two-dimensional core flow, the effect of the wall
boundary layers is neglected. A commercial code with the standard
incompressible viscous flow solver is applied to model the
vaneless diffuser core flow in the plane parallel to the diffuser
walls. At the diffuser inlet, rotating jet-wake velocity pattern
is prescribed and at the diffuser outlet constant static pressure
is assumed. Under these circumstances, two-dimensional rotating
flow instability similar to rotating stall is found to exist.
Performed parameter analysis reveals that this instability is
strongly influenced by the diffuser geometry and the inlet and
outlet flow conditions. |
| url |
http://dx.doi.org/10.1155/IJRM/2006/56420 |
| work_keys_str_mv |
AT sljevar twodimensionalrotatingstallanalysisinawidevanelessdiffuser AT hcdelange twodimensionalrotatingstallanalysisinawidevanelessdiffuser AT aavansteenhoven twodimensionalrotatingstallanalysisinawidevanelessdiffuser |
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1725799523191619584 |