Hydromagnetic flow between two porous disks rotating about non-coincident axes


Guria M., Das B. K. , Jana R. N. , İmrak C. E.

ACTA MECHANICA SINICA, cilt.24, sa.5, ss.489-496, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Konu: 5
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1007/s10409-008-0158-x
  • Dergi Adı: ACTA MECHANICA SINICA
  • Sayfa Sayıları: ss.489-496

Özet

Hydromagnetic flow between two porous disks rotating with same angular velocity Omega about two non-coincident axes has been studied in the presence of a uniform transverse magnetic field. An exact solution of the governing equations has been obtained in a closed form. It is found that the primary velocity f/Omega l increases and the secondary velocity g/Omega l decreases with increase in either Reynolds number Re or the Hartman number M. It is also found that the torque at the disk eta = 0 increases with increase in either M-2 or K-2. On the other hand there is no torque at the disk eta = 1 for large M 2 and K-2. The heat transfer characteristic has also been studied on taking viscous and Joule dissipation into account. It is seen that the temperature increases with increase in either M-2 or K-2. It is found that the rate of heat transfer at the disk eta = 0 increases with increase in either M or K. On the other hand the rate of heat transfer at the disk eta = 1 increases with increase in K but decreases with increase in M.