EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE
Total pressure loss, chaotic and heavy flow downstream of the turbine passage exit area are a few effects of the desired increase in inlet temperature input at the upstream part of the turbine vane passage. Huge amount of energy from the cross-flows near the middle of the vane actual chord are trans...
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| Language: | English |
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Muhammadiyah University Press
2024-07-01
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| Series: | Media Mesin |
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| Online Access: | https://journals2.ums.ac.id/mesin/article/view/4349 |
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| author | Adeola Suhud Shote Samson Abiodun Aasa Olabode T Olakoyejo Aderemi Musiliudeen Bamiduro |
| author_facet | Adeola Suhud Shote Samson Abiodun Aasa Olabode T Olakoyejo Aderemi Musiliudeen Bamiduro |
| author_sort | Adeola Suhud Shote |
| collection | DOAJ |
| description | Total pressure loss, chaotic and heavy flow downstream of the turbine passage exit area are a few effects of the desired increase in inlet temperature input at the upstream part of the turbine vane passage. Huge amount of energy from the cross-flows near the middle of the vane actual chord are transported downstream by this chaotic flow which often results in aerodynamic loss and differential heat penalties. To compare the different arrangement, comparisons of the two geometries, the impact of adding various rib configurations upstream are studied for heat augmentation efficacies. The leading-edge rib(s) effects at the mid-stream of the vane passage are quantitatively examined in this work using computational fluid dynamics (CFD) technique. With the employment of Reynolds Averaged Navier-Stoke energy equations, the geometries are modelled choosing the appropriate boundary conditions. Polyhedral mesh is used with fifteen prism layer mesh at the endwall and vane surfaces to capture the flow physics close to the endwall area. Although the two configurations employed showed relative reduction in the total pressure loss coefficient, however, the fractured ribs produced superior outcomes of Nusselt number reduction of over 10% along the passage exit region. The data demonstrate a considerable difference in the overall pressure loss between the two configurations. |
| format | Article |
| id | doaj-art-8818c06a2f6e423db9e839eeaa98f227 |
| institution | Kabale University |
| issn | 1411-4348 2541-4577 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Muhammadiyah University Press |
| record_format | Article |
| series | Media Mesin |
| spelling | doaj-art-8818c06a2f6e423db9e839eeaa98f2272025-02-03T01:52:26ZengMuhammadiyah University PressMedia Mesin1411-43482541-45772024-07-0125211612110.23917/mesin.v25i2.43494362EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGEAdeola Suhud Shote0Samson Abiodun Aasa1Olabode T Olakoyejo2Aderemi Musiliudeen Bamiduro3Olabisi Onabanjo UniversityUniversity of PretoriaUniversity of LagosMinistry of Works, Oyo State SecretariatTotal pressure loss, chaotic and heavy flow downstream of the turbine passage exit area are a few effects of the desired increase in inlet temperature input at the upstream part of the turbine vane passage. Huge amount of energy from the cross-flows near the middle of the vane actual chord are transported downstream by this chaotic flow which often results in aerodynamic loss and differential heat penalties. To compare the different arrangement, comparisons of the two geometries, the impact of adding various rib configurations upstream are studied for heat augmentation efficacies. The leading-edge rib(s) effects at the mid-stream of the vane passage are quantitatively examined in this work using computational fluid dynamics (CFD) technique. With the employment of Reynolds Averaged Navier-Stoke energy equations, the geometries are modelled choosing the appropriate boundary conditions. Polyhedral mesh is used with fifteen prism layer mesh at the endwall and vane surfaces to capture the flow physics close to the endwall area. Although the two configurations employed showed relative reduction in the total pressure loss coefficient, however, the fractured ribs produced superior outcomes of Nusselt number reduction of over 10% along the passage exit region. The data demonstrate a considerable difference in the overall pressure loss between the two configurations.https://journals2.ums.ac.id/mesin/article/view/4349vane-blademid-streamtotal pressure lossheat transfer |
| spellingShingle | Adeola Suhud Shote Samson Abiodun Aasa Olabode T Olakoyejo Aderemi Musiliudeen Bamiduro EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE Media Mesin vane-blade mid-stream total pressure loss heat transfer |
| title | EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE |
| title_full | EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE |
| title_fullStr | EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE |
| title_full_unstemmed | EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE |
| title_short | EFFECTS OF CONTINUOUS AND FRACTURED RIBS PLACED AT THE ENDWALL SURFACE UPSTREAM OF THE TURBINE-VANE LEADING-EDGE |
| title_sort | effects of continuous and fractured ribs placed at the endwall surface upstream of the turbine vane leading edge |
| topic | vane-blade mid-stream total pressure loss heat transfer |
| url | https://journals2.ums.ac.id/mesin/article/view/4349 |
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