AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE
The paper is concerned with experimental aerodynamic research on the midsection of a 1220 mm long turbine rotor blade. Optical as well as pneumatic measurements of the midsection blade cascade have been performed in a suction type high-speed wind tunnel. The results of measurements are analyzed and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Gdańsk University of Technology
2008-07-01
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| Series: | TASK Quarterly |
| Subjects: | |
| Online Access: | https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2029 |
| _version_ | 1817984250723434496 |
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| author | DAVID SIMURDA MARTIN LUXA PAVEL SAFARˇ´IK JAROSLAV SYNA´C |
| author_facet | DAVID SIMURDA MARTIN LUXA PAVEL SAFARˇ´IK JAROSLAV SYNA´C |
| author_sort | DAVID SIMURDA |
| collection | DOAJ |
| description |
The paper is concerned with experimental aerodynamic research on the midsection of a 1220 mm long turbine rotor blade. Optical as well as pneumatic measurements of the midsection blade cascade have been performed in a suction type high-speed wind tunnel. The results of measurements are analyzed and discussed.
Interferograms and schlieren pictures taken in a wide range of isentropic exit Mach numbers and incidence angles exhibit the existence of several phenomena occurring in the transonic flow field at certain conditions concerning the exit Mach number and the angle of incidence. A flow separation taking place at an extreme negative incidence has been found to produce an additional loss of 6%. The presence of the reflection of an exit shock wave on the suction side of the neighbouring profile has been found to have a substantial influence on the losses, since the loss coefficient value has increased about 10% in cases without the reflection, i.e. the cases at a high exit Mach number and a high positive angle of incidence. Several reflection types have been observed and described.
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| first_indexed | 2024-04-13T23:43:16Z |
| format | Article |
| id | doaj.art-3ffc379cd7e045569713df78be68f234 |
| institution | Directory Open Access Journal |
| issn | 1428-6394 |
| language | English |
| last_indexed | 2024-04-13T23:43:16Z |
| publishDate | 2008-07-01 |
| publisher | Gdańsk University of Technology |
| record_format | Article |
| series | TASK Quarterly |
| spelling | doaj.art-3ffc379cd7e045569713df78be68f2342022-12-22T02:24:25ZengGdańsk University of TechnologyTASK Quarterly1428-63942008-07-01123-4AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADEDAVID SIMURDA0MARTIN LUXA1PAVEL SAFARˇ´IK2JAROSLAV SYNA´C3Institute of Thermomechanics, AS CR, v.v.i.Institute of Thermomechanics, AS CR, v.v.iCTU Prague, Faculty of Mechanical EngineeringSKODA POWER a.s. The paper is concerned with experimental aerodynamic research on the midsection of a 1220 mm long turbine rotor blade. Optical as well as pneumatic measurements of the midsection blade cascade have been performed in a suction type high-speed wind tunnel. The results of measurements are analyzed and discussed. Interferograms and schlieren pictures taken in a wide range of isentropic exit Mach numbers and incidence angles exhibit the existence of several phenomena occurring in the transonic flow field at certain conditions concerning the exit Mach number and the angle of incidence. A flow separation taking place at an extreme negative incidence has been found to produce an additional loss of 6%. The presence of the reflection of an exit shock wave on the suction side of the neighbouring profile has been found to have a substantial influence on the losses, since the loss coefficient value has increased about 10% in cases without the reflection, i.e. the cases at a high exit Mach number and a high positive angle of incidence. Several reflection types have been observed and described. https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2029transonic flowturbine blade cascadeexperimental research |
| spellingShingle | DAVID SIMURDA MARTIN LUXA PAVEL SAFARˇ´IK JAROSLAV SYNA´C AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE TASK Quarterly transonic flow turbine blade cascade experimental research |
| title | AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE |
| title_full | AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE |
| title_fullStr | AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE |
| title_full_unstemmed | AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE |
| title_short | AERODYNAMIC RESEARCH ON THE MIDSECTION OF A LONG TURBINE BLADE |
| title_sort | aerodynamic research on the midsection of a long turbine blade |
| topic | transonic flow turbine blade cascade experimental research |
| url | https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2029 |
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