Study and Control of a Radial Vaned Diffuser Stall
The aim of the present study is to evaluate the efficiency of a boundary layer suction technique in case of a centrifugal compressor stage in order to extend its stable operating range. First, an analysis of the flow pattern within the radial vaned diffuser is presented. It highlights the stall of...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2012/549048 |
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| _version_ | 1832561294520090624 |
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| author | Aurélien Marsan Isabelle Trébinjac Sylvain Coste Gilles Leroy |
| author_facet | Aurélien Marsan Isabelle Trébinjac Sylvain Coste Gilles Leroy |
| author_sort | Aurélien Marsan |
| collection | DOAJ |
| description | The aim of the present study is to evaluate the efficiency of a boundary layer suction technique in case of a centrifugal compressor stage in order to extend its stable operating range.
First, an analysis of the flow pattern within the radial vaned diffuser is presented. It highlights the stall of the diffuser vanes when reaching a low massflow. A boundary layer separation in the hub-suction side corner grows when decreasing the massflow from the nominal operating point to the surge and finally leads to a massive stall.
An aspiration strategy is investigated in order to control the stall. The suction slot is put in the vicinity of the saddle that originates the main separating skin-friction line, identified thanks to the analysis of the skin-friction pattern. Several aspiration massflow rates are tested, and two different modelings of the aspiration are evaluated.
Finally, an efficient control is reached with a removal of only 0,1% of the global massflow and leads—from a steady-state calculations point of view—to an increase by 40% of the compressor operating range extent. |
| format | Article |
| id | doaj-art-84be3e59f71e4852892ea91e2c104254 |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-84be3e59f71e4852892ea91e2c1042542025-02-03T01:25:28ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342012-01-01201210.1155/2012/549048549048Study and Control of a Radial Vaned Diffuser StallAurélien Marsan0Isabelle Trébinjac1Sylvain Coste2Gilles Leroy3Turbomeca, Safran Group, BP 17, 64511 Bordes Cedex, FranceLMFA, UMR 5509, Ecole Centrale de Lyon, UCB Lyon I and INSA, 69134 Ecully Cedex, FranceTurbomeca, Safran Group, BP 17, 64511 Bordes Cedex, FranceTurbomeca, Safran Group, BP 17, 64511 Bordes Cedex, FranceThe aim of the present study is to evaluate the efficiency of a boundary layer suction technique in case of a centrifugal compressor stage in order to extend its stable operating range. First, an analysis of the flow pattern within the radial vaned diffuser is presented. It highlights the stall of the diffuser vanes when reaching a low massflow. A boundary layer separation in the hub-suction side corner grows when decreasing the massflow from the nominal operating point to the surge and finally leads to a massive stall. An aspiration strategy is investigated in order to control the stall. The suction slot is put in the vicinity of the saddle that originates the main separating skin-friction line, identified thanks to the analysis of the skin-friction pattern. Several aspiration massflow rates are tested, and two different modelings of the aspiration are evaluated. Finally, an efficient control is reached with a removal of only 0,1% of the global massflow and leads—from a steady-state calculations point of view—to an increase by 40% of the compressor operating range extent.http://dx.doi.org/10.1155/2012/549048 |
| spellingShingle | Aurélien Marsan Isabelle Trébinjac Sylvain Coste Gilles Leroy Study and Control of a Radial Vaned Diffuser Stall International Journal of Rotating Machinery |
| title | Study and Control of a Radial Vaned Diffuser Stall |
| title_full | Study and Control of a Radial Vaned Diffuser Stall |
| title_fullStr | Study and Control of a Radial Vaned Diffuser Stall |
| title_full_unstemmed | Study and Control of a Radial Vaned Diffuser Stall |
| title_short | Study and Control of a Radial Vaned Diffuser Stall |
| title_sort | study and control of a radial vaned diffuser stall |
| url | http://dx.doi.org/10.1155/2012/549048 |
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