Heat transfer enhancement in a striaght channel via transversly oscillating adiabatic circular cylinder

Bayram Celik, Ali Beskok, Mehrdad Raisee

Araştırma sonucu: Kitap/Rapor/Konferans Bildirisinde BölümKonferans katkısıbilirkişi

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 dilİngilizce
Ana bilgisayar yayını başlığıInternational Conference on Computational Methods for Thermal Problems
EditörlerNicola Massarotti, Perumal Nithiarasu
YayınlayanOfficine Grafiche Francesco Giannini & figli S.p.A.
Sayfalar121-124
Sayfa sayısı4
ISBN (Basılı)9788874314591, 9788874318285
Yayın durumuYayınlandı - 2009
Harici olarak yayınlandıEvet
Etkinlik1st International Conference on Computational Methods for Thermal Problems, THERMACOMP 2009 - Naples, Italy
Süre: 8 Eyl 200910 Eyl 2009

Yayın serisi

AdıInternational Conference on Computational Methods for Thermal Problems
Hacim0
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
Ülke/BölgeItaly
ŞehirNaples
Periyot8/09/0910/09/09

Bibliyografik not

Publisher Copyright:
© 2009 by the authors of the abstracts.

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