NUMERICAL SOLUTION OF NATURAL CONVECTIVE HEAT TRANSFER UNDER MAGNETIC FIELD EFFECT

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ŞAHİN S., Demir H.

ACTA MECHANICA ET AUTOMATICA, cilt.13, sa.1, ss.23-29, 2019 (ESCI, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.2478/ama-2019-0004
  • Dergi Adı: ACTA MECHANICA ET AUTOMATICA
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.23-29
  • Anahtar Kelimeler: Natural convective heat transfer, Rayleigh number, Chandrasekhar number, pseudo time derivative, Newtonian fluids, pseudoplastic fluids, FINITE-ELEMENT APPROXIMATION, NAVIER-STOKES EQUATIONS, CAVITY FLOW, SIMULATION, LAYER
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

In this study, non-Newtonian pseudoplastic fluid flow equations for 2-D steady, incompressible, the natural convective heat transfer are solved numerically by pseudo time derivative. The stability properties of natural convective heat transfer in an enclosed cavity region heated from below under magnetic field effect are investigated depending on the Rayleigh and Chandrasekhar numbers. Stability properties are studied, in particular, for the Rayleigh number from 10(4) to 10(6) and for the Chandrasekhar number 3, 5 and 10. As a result, when Rayleigh number is bigger than 10(6) and Chandrasekhar number is bigger than 10, the instability occurs in the flow domain. The results obtained for natural convective heat transfer problem are shown in the figures for Newtonian and pseudoplastic fluids. Finally, the local Nusselt number is evaluated along the bottom wall.