Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls
Secondary flow and loss development in the T106Div-EIZ low-pressure turbine cascade are investigated utilizing (U)RANS simulations in cases with and without periodically incoming wakes at M a 2 t h = 0 . 59 and R e 2 t h = 2 × 10 5 . The predictions are compared to experimen...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-02-01
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| Series: | International Journal of Turbomachinery, Propulsion and Power |
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| Online Access: | http://www.mdpi.com/2504-186X/3/1/5 |
| _version_ | 1819104579693838336 |
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| author | Roberto Ciorciari Tobias Schubert Reinhard Niehuis |
| author_facet | Roberto Ciorciari Tobias Schubert Reinhard Niehuis |
| author_sort | Roberto Ciorciari |
| collection | DOAJ |
| description | Secondary flow and loss development in the T106Div-EIZ low-pressure turbine cascade are investigated utilizing (U)RANS simulations in cases with and without periodically incoming wakes at M a 2 t h = 0 . 59 and R e 2 t h = 2 × 10 5 . The predictions are compared to experimental data presented by Kirik and Niehuis (2015). The axial mid-span and overall loss development in the T106Div-EIZ and the T106A-EIZ in the steady case are analyzed regarding the effects caused by the different loading distributions and by the divergent endwall geometry. Furthermore, the entropy generation is analyzed in the T106Div-EIZ with periodically incoming wakes in several axial positions of interest and compared to the undisturbed steady case. It is found that in the front-loaded T106Div-EIZ, the incoming wakes cause a premature endwall loss production in the front part of the passage, resulting in a lower intensity of the secondary flow downstream of the passage and a redistribution of the loss generation components. |
| first_indexed | 2024-12-22T02:08:36Z |
| format | Article |
| id | doaj.art-1577c2fcd7b44766aeb3ca37e2fd2b78 |
| institution | Directory Open Access Journal |
| issn | 2504-186X |
| language | English |
| last_indexed | 2024-12-22T02:08:36Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Turbomachinery, Propulsion and Power |
| spelling | doaj.art-1577c2fcd7b44766aeb3ca37e2fd2b782022-12-21T18:42:27ZengMDPI AGInternational Journal of Turbomachinery, Propulsion and Power2504-186X2018-02-0131510.3390/ijtpp3010005ijtpp3010005Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent EndwallsRoberto Ciorciari0Tobias Schubert1Reinhard Niehuis2Institute of Jet Propulsion, Bundeswehr University Munich, Werner-Heiseberg-Weg 39, 85577 Neubiberg, GermanyInstitute of Jet Propulsion, Bundeswehr University Munich, Werner-Heiseberg-Weg 39, 85577 Neubiberg, GermanyInstitute of Jet Propulsion, Bundeswehr University Munich, Werner-Heiseberg-Weg 39, 85577 Neubiberg, GermanySecondary flow and loss development in the T106Div-EIZ low-pressure turbine cascade are investigated utilizing (U)RANS simulations in cases with and without periodically incoming wakes at M a 2 t h = 0 . 59 and R e 2 t h = 2 × 10 5 . The predictions are compared to experimental data presented by Kirik and Niehuis (2015). The axial mid-span and overall loss development in the T106Div-EIZ and the T106A-EIZ in the steady case are analyzed regarding the effects caused by the different loading distributions and by the divergent endwall geometry. Furthermore, the entropy generation is analyzed in the T106Div-EIZ with periodically incoming wakes in several axial positions of interest and compared to the undisturbed steady case. It is found that in the front-loaded T106Div-EIZ, the incoming wakes cause a premature endwall loss production in the front part of the passage, resulting in a lower intensity of the secondary flow downstream of the passage and a redistribution of the loss generation components.http://www.mdpi.com/2504-186X/3/1/5low-pressure turbineunsteady flowsecondary flowloss development(U)RANS |
| spellingShingle | Roberto Ciorciari Tobias Schubert Reinhard Niehuis Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls International Journal of Turbomachinery, Propulsion and Power low-pressure turbine unsteady flow secondary flow loss development (U)RANS |
| title | Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls |
| title_full | Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls |
| title_fullStr | Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls |
| title_full_unstemmed | Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls |
| title_short | Numerical Investigation of Secondary Flow and Loss Development in a Low-Pressure Turbine Cascade with Divergent Endwalls |
| title_sort | numerical investigation of secondary flow and loss development in a low pressure turbine cascade with divergent endwalls |
| topic | low-pressure turbine unsteady flow secondary flow loss development (U)RANS |
| url | http://www.mdpi.com/2504-186X/3/1/5 |
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