Özet
Vortex shedding from a transversely oscillating circular cylinder confined in a channel and its effect on the wall heat transfer of a channel under constant heat flux wall boundary condition are studied by utilizing an arbitrary Lagrangian Eulerian formulation based on h/p finite element algorithm. The numerical method exhibits spectral accuracy and allows large mesh deformation in the computational domain. The simulations are performed at Re=100 for a fixed maximum cylinder displacement of 0.4 times the cylinder diameter. For all these cases, blockage ratio is equal to 1/3. The simulation results show that the vortex shedding from the cylinder increases the heat transfer levels significantly. The transverse oscillation of the cylinder creates strong vortices close to the walls which results in an effective heat transfer mechanism from the channel walls. Numerical simulation results, conducted for a wide range of cylinder excitation frequencies, show that the highest heat transfer enhancement is arisen for the cylinder oscillation to natural vortex shedding frequency ratio of 0.75.
Orijinal dil | İngilizce |
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Ana bilgisayar yayını başlığı | International Conference on Computational Methods for Thermal Problems |
Editörler | Nicola Massarotti, Perumal Nithiarasu |
Yayınlayan | Officine Grafiche Francesco Giannini & figli S.p.A. |
Sayfalar | 121-124 |
Sayfa sayısı | 4 |
ISBN (Basılı) | 9788874314591, 9788874318285 |
Yayın durumu | Yayınlandı - 2009 |
Harici olarak yayınlandı | Evet |
Etkinlik | 1st International Conference on Computational Methods for Thermal Problems, THERMACOMP 2009 - Naples, Italy Süre: 8 Eyl 2009 → 10 Eyl 2009 |
Yayın serisi
Adı | International Conference on Computational Methods for Thermal Problems |
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Hacim | 0 |
ISSN (Basılı) | 2305-5995 |
ISSN (Elektronik) | 2305-6924 |
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???event.eventtypes.event.conference??? | 1st International Conference on Computational Methods for Thermal Problems, THERMACOMP 2009 |
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Ülke/Bölge | Italy |
Şehir | Naples |
Periyot | 8/09/09 → 10/09/09 |
Bibliyografik not
Publisher Copyright:© 2009 by the authors of the abstracts.