Flow Field in the Turbine Rotor Passage in an Automotive Torque Converter Based on the High Frequency Response Rotating Five-hole Probe Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6)
The relative flow field in an automotive torque converter turbine was measured at three locations inside the passage (turbine 1/4 chord, mid-chord, and 4/4 chord) using a highfrequency response rotating five-hole-probe. “Jet-Wake” flow structure was found in the turbine passage. Possible flow separa...
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| Format: | Article |
| Language: | English |
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Wiley
2001-01-01
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| Series: | International Journal of Rotating Machinery |
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| Online Access: | http://dx.doi.org/10.1155/S1023621X01000227 |
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| author | Y. F. Liu B. Lakshminarayana J. Burningham |
| author_facet | Y. F. Liu B. Lakshminarayana J. Burningham |
| author_sort | Y. F. Liu |
| collection | DOAJ |
| description | The relative flow field in an automotive torque converter turbine was measured at three locations inside the passage (turbine 1/4 chord, mid-chord, and 4/4 chord) using a highfrequency response rotating five-hole-probe. “Jet-Wake” flow structure was found in the turbine passage. Possible flow separation region was observed at the core/suction side at the turbine 1/4 chord and near the suction side at the turbine mid-chord. The mass averaged stagnation pressure drop is almost evenly distributed along the turbine flow path at the design condition (SR=0.6). The pressure drop due to centrifugal and Coriolis forces is found to be appreciable. The rotary stagnation pressure distribution indicates that there are higher losses at the first half of the turbine passage than at the second half. The major reasons for these higher losses and inefficiency are possible flow separation and a mismatch between the pump exit and the turbine inlet flow field. The fuel economy of a torque converter can be improved through redesign of the core region and by properly matching the pump and the turbine. The Part I of the paper deals with the design speed ratio (SR=0.6), and Part II deals with the off-design condition (SR=0.065) and the effects of speed ratio. |
| format | Article |
| id | doaj-art-cc608b5c388b4b0eb58d3aa5e80b7591 |
| institution | OA Journals |
| issn | 1023-621X |
| language | English |
| publishDate | 2001-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-cc608b5c388b4b0eb58d3aa5e80b75912025-08-20T02:19:57ZengWileyInternational Journal of Rotating Machinery1023-621X2001-01-017425326910.1155/S1023621X01000227Flow Field in the Turbine Rotor Passage in an Automotive Torque Converter Based on the High Frequency Response Rotating Five-hole Probe Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6)Y. F. Liu0B. Lakshminarayana1J. Burningham2Center for Gas Turbines and Power, The Pennsylvania State University, 153 Hammond Building, University Park, PA 16802, USACenter for Gas Turbines and Power, The Pennsylvania State University, 153 Hammond Building, University Park, PA 16802, USACenter for Gas Turbines and Power, The Pennsylvania State University, 153 Hammond Building, University Park, PA 16802, USAThe relative flow field in an automotive torque converter turbine was measured at three locations inside the passage (turbine 1/4 chord, mid-chord, and 4/4 chord) using a highfrequency response rotating five-hole-probe. “Jet-Wake” flow structure was found in the turbine passage. Possible flow separation region was observed at the core/suction side at the turbine 1/4 chord and near the suction side at the turbine mid-chord. The mass averaged stagnation pressure drop is almost evenly distributed along the turbine flow path at the design condition (SR=0.6). The pressure drop due to centrifugal and Coriolis forces is found to be appreciable. The rotary stagnation pressure distribution indicates that there are higher losses at the first half of the turbine passage than at the second half. The major reasons for these higher losses and inefficiency are possible flow separation and a mismatch between the pump exit and the turbine inlet flow field. The fuel economy of a torque converter can be improved through redesign of the core region and by properly matching the pump and the turbine. The Part I of the paper deals with the design speed ratio (SR=0.6), and Part II deals with the off-design condition (SR=0.065) and the effects of speed ratio.http://dx.doi.org/10.1155/S1023621X01000227Torque converterTurbineFlow measurementRotating frame of referenceFive-hole probe. |
| spellingShingle | Y. F. Liu B. Lakshminarayana J. Burningham Flow Field in the Turbine Rotor Passage in an Automotive Torque Converter Based on the High Frequency Response Rotating Five-hole Probe Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6) International Journal of Rotating Machinery Torque converter Turbine Flow measurement Rotating frame of reference Five-hole probe. |
| title | Flow Field in the Turbine Rotor Passage
in an Automotive Torque Converter Based on the High
Frequency Response Rotating Five-hole Probe
Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6) |
| title_full | Flow Field in the Turbine Rotor Passage
in an Automotive Torque Converter Based on the High
Frequency Response Rotating Five-hole Probe
Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6) |
| title_fullStr | Flow Field in the Turbine Rotor Passage
in an Automotive Torque Converter Based on the High
Frequency Response Rotating Five-hole Probe
Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6) |
| title_full_unstemmed | Flow Field in the Turbine Rotor Passage
in an Automotive Torque Converter Based on the High
Frequency Response Rotating Five-hole Probe
Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6) |
| title_short | Flow Field in the Turbine Rotor Passage
in an Automotive Torque Converter Based on the High
Frequency Response Rotating Five-hole Probe
Measurement Part I: Flow Field at the Design Condition (Speed Ratio 0.6) |
| title_sort | flow field in the turbine rotor passage in an automotive torque converter based on the high frequency response rotating five hole probe measurement part i flow field at the design condition speed ratio 0 6 |
| topic | Torque converter Turbine Flow measurement Rotating frame of reference Five-hole probe. |
| url | http://dx.doi.org/10.1155/S1023621X01000227 |
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