NUMERICAL SIMULATION OF NATURAL CONVECTION IN A POROUS CAVITY FILLED WITH FERROFLUID IN PRESENCE OF MAGNETIC SOURCE

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Geridönmez B.

JOURNAL OF THERMAL ENGINEERING, cilt.4, sa.2, ss.1756-1769, 2018 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.18186/journal-of-thermal-engineering.369169
  • Dergi Adı: JOURNAL OF THERMAL ENGINEERING
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.1756-1769
  • Anahtar Kelimeler: Ferrofluid, Porous Media, Natural Convection, Radial Basis Functions, Magnetic Source, NANOFLUID FORCED-CONVECTION, WATER-BASED NANOFLUID, HEAT-TRANSFER, THERMAL-RADIATION, LORENTZ FORCES, FIELD, FLOW, EXISTENCE, ENCLOSURE, CONSTANT
  • TED Üniversitesi Adresli: Evet

Özet

In this study, numerical simulation of natural convection in a porous square cavity filled with Fe3O4-water is investigated. A magnetic source through the left wall of the cavity is also taken into account. Radial basis function based pseudo spectral (RBF-PS) method is applied. The effects of dimensionless parameters Darcy (Da), Hartmann (Ha), Rayleigh (Ra) numbers and solid volume fraction phi are presented both in terms of streamlines, isotherms and vorticity contours and average Nusselt number through the heated wall. Convective heat transfer is inhibited with the rise of Ha, and with the decrease in Da while it is enhanced with the increase in phi and Ra.