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100 _a20171208a2017 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aFree convection in wavy porous enclosures with non-uniform temperature boundary conditions filled with a nanofluid: Buongiorno’s mathematical model
_fM. A. Sheremet, I. Pop
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: p. 1192 - 1193 (22 tit.)]
330 _aIn the present work, the influence of the amplitude ratio, phase deviation, and undulation number on natural convection in a wavy-walled enclosures differentially heated and filled with a water based nanofluid is studied. The upper and bottom walls are wavy with several undulations. The sinusoidal distribution of temperature is imposed at the vertical walls. The flow, heat, and mass transfer are calculated by solving governing equations for embody the conservation of total mass, momentum, thermal energy, and nanoparticles, taking into account the Darcy-Boussinesq-Buongiorno approximation with second order finite difference method in “stream function-temperature-concentration” formulation. Results are presented in the form of streamlines, isotherm, and isoconcentration contours, and distributions of the average Nusselt number for the different values of the amplitude ratio of the sinusoidal temperature on the right side wall to that on the left side wall (γ = 0-1), phase deviation (φ = 0-π), and undulation number (κ = 1-4). It has been found that variations of the undulation number allow to control the heat and mass transfer rates. Moreover, an increase in the undulation number leads to an extension of the non-homogeneous zones.
461 _tThermal Science
_d2002-
463 _tVol. 21, iss. 3
_v[P. 1183-1193]
_d2017
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _afree convection
610 1 _awavy-walled cavity
610 1 _asinusoidal temperature
610 1 _aporous media
610 1 _ananofluids
610 1 _anumerical method
610 1 _aсвободная конвекция
610 1 _aпористые среды
610 1 _aнаножидкости
610 1 _aчисленные методы
610 1 _aестественная конвекция
700 1 _aSheremet
_bM. A.
_cphysicist
_cAssociate Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences
_f1983-
_gMikhail Aleksandrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\35115
701 1 _aPop
_bI.
_gIoan
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bЭнергетический институт (ЭНИН)
_bКафедра атомных и тепловых электростанций (АТЭС)
_h118
_2stltpush
_3(RuTPU)RU\TPU\col\18683
801 2 _aRU
_b63413507
_c20171208
_gRCR
856 4 _uhttps://doi.org/10.2298/TSCI140814089S
942 _cCF