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100 _a20151124a2015 k y0engy50 ba
101 0 _aeng
102 _aGB
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aUnsteady Conjugate Natural Convection in a Three-Dimensional Porous Enclosure
_fM. A. Sheremet
203 _aText
_celectronic
300 _aTitle screen
330 _aTransient-free convection in a porous enclosure having heat-conducting solid walls of finite thickness under conditions of convective heat exchange with an environment was studied numerically. A heat source of constant temperature was located at the bottom of the cavity. The governing equations in porous volume formulated in dimensionless variables such as the temperature and vector potential functions within the Darcy-Boussinesq approach and the transient three-dimensional heat conduction equation based on the Fourier hypothesis for solid walls with corresponding initial and boundary conditions were solved using an iterative implicit finite-difference method. The main objective was to investigate the influence of the Rayleigh number 103 ≤ Ra ≤ 106, the Darcy number 10−5 ≤ Da ≤ 10−3, the thermal conductivity ratio 1 ≤ k1,2 ≤ 20, the solid wall thickness ratio 0.1 ≤ l/L ≤ 0.3, and the dimensionless time 0 ≤ τ ≤ 200 on the fluid flow and heat transfer. Comprehensive analysis of the effects of these key parameters on the average Nusselt number at the heat source surface was conducted.
461 _tNumerical Heat Transfer
_d1986-
463 _tVol. 68, iss. 3
_v[P. 243-267]
_d2015
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aестественная конвекция
610 1 _aнестационарные режимы
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
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
_c20151124
_gRCR
856 4 _uhttp://dx.doi.org/10.1080/10407782.2014.977172
942 _cBK