Natural convection of micropolar fluid in a wavy differentially heated cavity

被引：52

作者：

Gibanov, Nikita S. ^{[1
]}

Sheremet, Mikhail A. ^{[1
,2
]}

Pop, Ioan ^{[3
]}

机构：

[1] Tomsk State Univ, Dept Theoret Mech, Tomsk 634050, Russia

[2] Tomsk Polytech Univ, Dept Nucl & Thermal Power Plants, Tomsk 634050, Russia

[3] Univ Babes Bolyai, Dept Appl Math, Cluj Napoca 400084, Romania

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 221卷

关键词：

Wavy cavity; Natural convection; Micropolar fluid; Numerical results; FINITE-ELEMENT SOLUTION; FLAT-PLATE; FLOW; NANOFLUID; SURFACE; CHANNEL; FIELD;

D O I：

10.1016/j.molliq.2016.06.033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An analysis of natural convective flow and heat transfer of a micropolar fluid in a wavy differentially heated cavity has been performed. Governing partial differential equations formulated in non-dimensional variables have been solved by finite difference method of second order accuracy. The effects of Rayleigh number (Ra = 10(4),10(5),10(6)), Prandtl number (Pr = 0.1, 0.7, 7.0), vortex viscosity parameter (K = 0, 0.1, 0.5, 2.0) and undulation number (kappa = 1, 2,3) on flow patterns, temperature fields and average Nusselt number at hot wavy wall have been studied. It is found that microrotation increases as the vortex viscosity parameter K increases. However, the fluid velocity decreases as K increases. It is observed that the form of streamlines is dependent on the value of vortex viscosity parameter. An increase in the undulation number leads to a decrease in the heat transfer rate at wavy wall. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：518 / 525

页数：8

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