Доступ предоставлен для: Guest

EFFECT OF THIN FIN ON NON-DARCY BUOYANCY FLOW IN A SQUARE CAVITY FILLED WITH POROUS MEDIUM

Том 14, Выпуск 11, 2011, pp. 975-988
DOI: 10.1615/JPorMedia.v14.i11.30
Get accessGet access

Краткое описание

A penalty finite element analysis is performed for a natural convection flow in a differentially heated square cavity filled with porous matrix with a solid thin fin attached at the hot left wall, whereas the horizontal walls are thermally insulated. A Darcy-Forchheimer model is used to predict the temperature field and the flow circulations in the porous medium, and it is assumed that the porosity of the medium is Φ = 0.4 and that the Forchheimer number is F = 0.011 throughout this study. The effect of the highly conductive fin of three different lengths Lp = 0.3, 0.5, 0.7, located at three different positions Sp = 0.25, 0.5, and 0.75, is examined for Da = 10−4, 10−3, and 10−5 with Ra = 106 and Pr = 0.7 and 10. It is identified that due to attaching the fin on the hot wall, the primary vortex is modified, and the modification depends on the fin's location and length. For Da = 10−3 and Pr = 0.7, it is observed that there is a counterclockwise secondary flow formation around the tip of the fin for Sp = 0.5 for all length Lp. Moreover, when Da = 10−2, the secondary circulation behavior has been observed for Sp = 0.25, and 0.75 and there is another circulation between the top wall and the fin that is separated from the primary circulation. However, these secondary circulation features are not observed for Pr = 10. The fin’s conductivity effects on the heat transfer rates are investigated through local Nusselt number and average Nusselt number as a function of fin length Lp. It is found that the average Nusselt number at the left wall decreases as the length of the fin increases for all locations. However, the rate of decrease of average Nusselt number becomes slower as the location of the fin moves from the bottom wall to the top wall.

ЦИТИРОВАНО В
  1. Humaira Tasnim Syeda, Mahmud Shohel, Dutta Animesh, Energy Streamlines Analyses on Natural Convection Within Porous Square Enclosure With Internal Obstructions, Journal of Thermal Science and Engineering Applications, 5, 3, 2013. Crossref

  2. Nield Donald A., Bejan Adrian, Internal Natural Convection: Heating from the Side, in Convection in Porous Media, 2013. Crossref

Статьи, принятые к публикации

ON THERMAL CONVECTION IN ROTATING CASSON NANOFLUID PERMEATED WITH SUSPENDED PARTICLES IN A DARCY-BRINKMAN POROUS MEDIUM Pushap Sharma, Deepak Bains, G. C. Rana Effect of Microstructures on Mass Transfer inside a Hierarchically-structured Porous Catalyst Masood Moghaddam, Abbas Abbassi, Jafar Ghazanfarian Insight into the impact of melting heat transfer and MHD on stagnation point flow of tangent hyperbolic fluid over a porous rotating disk Priya Bartwal, Himanshu Upreti, Alok Kumar Pandey Numerical Simulation of 3D Darcy-Forchheimer Hybrid Nanofluid Flow with Heat Source/Sink and Partial Slip Effect across a Spinning Disc Bilal Ali, Sidra Jubair, Md Irfanul Haque Siddiqui Fractal model of solid-liquid two-phase thermal transport characteristics in the rough fracture network shanshan yang, Qiong Sheng, Mingqing Zou, Mengying Wang, Ruike Cui, Shuaiyin Chen, Qian Zheng Application of Artificial Neural Network for Modeling of Motile Microorganism-Enhanced MHD Tangent Hyperbolic Nanofluid across a vertical Slender Stretching Surface Bilal Ali, Shengjun Liu, Hongjuan Liu Estimating the Spreading Rates of Hazardous Materials on Unmodified Cellulose Filter Paper: Implications on Risk Assessment of Transporting Hazardous Materials Heshani Manaweera Wickramage, Pan Lu, Peter Oduor, Jianbang Du ELASTIC INTERACTIONS BETWEEN EQUILIBRIUM PORES/HOLES IN POROUS MEDIA UNDER REMOTE STRESS Kostas Davanas Gravity modulation and its impact on weakly nonlinear bio-thermal convection in a porous layer under rotation: a Ginzburg-Landau model approach Michael Kopp, Vladimir Yanovsky Pore structure and permeability behavior of porous media under in-situ stress and pore pressure: Discrete element method simulation on digital core Jun Yao, Chunqi Wang, Xiaoyu Wang, Zhaoqin Huang, Fugui Liu, Quan Xu, Yongfei Yang Influence of Lorentz forces on forced convection of Nanofluid in a porous lid driven enclosure Yi Man, Mostafa Barzegar Gerdroodbary SUTTERBY NANOFLUID FLOW WITH MICROORGANISMS AROUND A CURVED EXPANDING SURFACE THROUGH A POROUS MEDIUM: THERMAL DIFFUSION AND DIFFUSION THERMO IMPACTS galal Moatimid, Mona Mohamed, Khaled Elagamy CHARACTERISTICS OF FLOW REGIMES IN SPIRAL PACKED BEDS WITH SPHERES Mustafa Yasin Gökaslan, Mustafa Özdemir, Lütfullah Kuddusi Numerical study of the influence of magnetic field and throughflow on the onset of thermo-bio-convection in a Forchheimer‑extended Darcy-Brinkman porous nanofluid layer containing gyrotactic microorganisms Arpan Garg, Y.D. Sharma, Subit K. Jain, Sanjalee Maheshwari A nanofluid couple stress flow due to porous stretching and shrinking sheet with heat transfer A. B. Vishalakshi, U.S. Mahabaleshwar, V. Anitha, Dia Zeidan ROTATING WAVY CYLINDER ON BIOCONVECTION FLOW OF NANOENCAPSULATED PHASE CHANGE MATERIALS IN A FINNED CIRCULAR CYLINDER Noura Alsedais, Sang-Wook Lee, Abdelraheem Aly Porosity Impacts on MHD Casson Fluid past a Shrinking Cylinder with Suction Annuri Shobha, Murugan Mageswari, Aisha M. Alqahtani, Asokan Arulmozhi, Manyala Gangadhar Rao, Sudar Mozhi K, Ilyas Khan CREEPING FLOW OF COUPLE STRESS FLUID OVER A SPHERICAL FIELD ON A SATURATED BIPOROUS MEDIUM Shyamala Sakthivel , Pankaj Shukla, Selvi Ramasamy
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции Цены и условия подписки Begell House Контакты Language English 中文 Русский Português German French Spain