Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation
The Spectral/HP element method has been applied to perform Direct Numerical Simulations (DNS) over a single T106A turbine blade-row using the open source software Nektar++. The main goal of the current study is to perform preliminary investigations at modest Reynolds and Mach numbers, 8000 and 0.1 r...
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| Format: | Article |
| Language: | English |
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Shahid Chamran University of Ahvaz
2021-01-01
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| Series: | Journal of Applied and Computational Mechanics |
| Subjects: | |
| Online Access: | https://jacm.scu.ac.ir/article_15891_36778cd81b4e58cb0ba850aa9c125bbd.pdf |
| _version_ | 1819120131335258112 |
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| author | Daniel H. Wacks Mahdi E. Nakhchi Mohammad Rahmati |
| author_facet | Daniel H. Wacks Mahdi E. Nakhchi Mohammad Rahmati |
| author_sort | Daniel H. Wacks |
| collection | DOAJ |
| description | The Spectral/HP element method has been applied to perform Direct Numerical Simulations (DNS) over a single T106A turbine blade-row using the open source software Nektar++. The main goal of the current study is to perform preliminary investigations at modest Reynolds and Mach numbers, 8000 and 0.1 respectively, for uniform, steady flow past the aerofoil by employing Nektar++’s solver for the 2D Navier-Stokes equations for incompressible flow. The mesh was firstly validated against results obtained using the same software and for a similar set of parameter values. One dimensional, pitch-wise harmonic vibrations were subsequently imposed on the blade by means of a coordinate transformation. A parametric study in terms of the frequency and amplitude of the vibrations was carried out. The effects of the vibrations on entire domain, along the blade surface and in its wake were assessed. The pressure on the blade surface and the wake loss were each decomposed into components arising due to the mean flow and due to the vibrations. In each case the dominant components were then identified for the values of frequency and amplitude considered here. |
| first_indexed | 2024-12-22T06:15:47Z |
| format | Article |
| id | doaj.art-27c324275ca5426d952baaaabd99aa16 |
| institution | Directory Open Access Journal |
| issn | 2383-4536 2383-4536 |
| language | English |
| last_indexed | 2024-12-22T06:15:47Z |
| publishDate | 2021-01-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | Journal of Applied and Computational Mechanics |
| spelling | doaj.art-27c324275ca5426d952baaaabd99aa162022-12-21T18:36:05ZengShahid Chamran University of AhvazJournal of Applied and Computational Mechanics2383-45362383-45362021-01-017113514710.22055/jacm.2020.34843.248015891Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical SimulationDaniel H. Wacks0Mahdi E. Nakhchi1Mohammad Rahmati2Department of Mechanical & Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UKDepartment of Mechanical & Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UKDepartment of Mechanical & Construction Engineering, Northumbria University, Newcastle upon Tyne, NE1 8ST, UKThe Spectral/HP element method has been applied to perform Direct Numerical Simulations (DNS) over a single T106A turbine blade-row using the open source software Nektar++. The main goal of the current study is to perform preliminary investigations at modest Reynolds and Mach numbers, 8000 and 0.1 respectively, for uniform, steady flow past the aerofoil by employing Nektar++’s solver for the 2D Navier-Stokes equations for incompressible flow. The mesh was firstly validated against results obtained using the same software and for a similar set of parameter values. One dimensional, pitch-wise harmonic vibrations were subsequently imposed on the blade by means of a coordinate transformation. A parametric study in terms of the frequency and amplitude of the vibrations was carried out. The effects of the vibrations on entire domain, along the blade surface and in its wake were assessed. The pressure on the blade surface and the wake loss were each decomposed into components arising due to the mean flow and due to the vibrations. In each case the dominant components were then identified for the values of frequency and amplitude considered here.https://jacm.scu.ac.ir/article_15891_36778cd81b4e58cb0ba850aa9c125bbd.pdfdnsspectral/hp element methodlow-pressure turbineblade vibrations |
| spellingShingle | Daniel H. Wacks Mahdi E. Nakhchi Mohammad Rahmati Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation Journal of Applied and Computational Mechanics dns spectral/hp element method low-pressure turbine blade vibrations |
| title | Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation |
| title_full | Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation |
| title_fullStr | Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation |
| title_full_unstemmed | Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation |
| title_short | Forced Response of a Low-Pressure Turbine Blade using Spectral/hp Element Method: Direct Numerical Simulation |
| title_sort | forced response of a low pressure turbine blade using spectral hp element method direct numerical simulation |
| topic | dns spectral/hp element method low-pressure turbine blade vibrations |
| url | https://jacm.scu.ac.ir/article_15891_36778cd81b4e58cb0ba850aa9c125bbd.pdf |
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