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The effect of reduced heat transfer in a micropolar fluid in natural convection

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Języki publikacji
EN
Abstrakty
EN
This paper presents the numerical solution to the unsteady natural convection problem in micropolar fluid in the vicinity of a vertical plate, heat flux of which rises suddenly at a given moment. In order to solve this problem the method of finite differences was applied. The numerical results have been presented for a range of values of the dimensionless material properties and fluid Prandtl number. The analysis of the results shows that the intensity of the heat transfer in micropolar fluid is lower compared to the Newtonian fluid.
Rocznik
Strony
45--59
Opis fizyczny
Bibliogr. 9 poz., il.
Twórcy
autor
  • Cracow University of Technology, Faculty of Mechanical Engineering, Jana Pawła II 37, 31-864 Kraków, Poland
autor
  • Cracow University of Technology, Faculty of Mechanical Engineering, Jana Pawła II 37, 31-864 Kraków, Poland
Bibliografia
  • [1] Eringen A.C.: Theory of micropolar fluids. J. Math. Mech. 16(1966), 1-18.
  • [2] Gorla R.S.R.: Unsteady mixed convection in micropolar boundary layer flow on avertical plate. Fluid Dynamics Research 15(1995), 237-250.
  • [3] El-Hakiem M.A.: Natural convection in a micropolar fluid with thermal dispersion and internal heat generation. Int. Comm. Heat Mass Transfer 31(2004), 8, 1177-1186.
  • [4] Hossain M.A., Chowdhury M.K.: Mixed convection flow of micropolar fluid over an isothermal plate with variable spin gradient. Acta Mechanica 131(1998), 139-151.
  • [5] Chang Ch.L., Lee Z.Y.: Free convection on a vertical plate with uniform and constant heat flux in a thermally stratified micropolar fluid. Mechanics Research Communications 35(2008), 421-427.
  • [6] Mohammedein A.A., Gorla R.S.R.: Heat transfer in a micropolar fluid over a stretching sheet with viscous dissipation and internal heat generation. Int. J. Numerical Methods for Heat and Fluid Flow, 11(2001), 1, 50-58.
  • [7] Anderson J.: Computational Fluid Dynamics, McGraw- Hill, Inc., New York 1995.
  • [8] Rup K.: Transient Natural convection heat transfer in non-Newtonian second order fluids. J. Theoretical and Applied Mechanics 1, 34, 1996.
  • [9] Martynenko O.G., Sokowiskyn J.A.: Natural Convection Heat Transfer on the Vertical Surface. Nauka, Minsk, 1977 (in Russian).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-d330ed78-56d5-4c40-8809-c6dcae59fe0d
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