A Review on the Control Parameters of Natural Convection in Different Shaped Cavities with and Without Nanofluid

Processes

MostafaSafdari Shadloo¹  Goshtasp Cheraghian²  Saeed Aghakhani³  Ahmad Hajatzadeh Pordanjani⁴  HakanF. Oztop⁵  Masoud Afrand⁶  Sara Rostami⁷ 

[1] CORIA-CNRS(UMR6614), Normandie University, INSA of Rouen, 76000 Rouen, France;Department of Civil Engineering, Technische Universität Braunschweig, 38106 Braunschweig, Germany;Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;Department of Mechanical Engineering, Shahrekord University, Shahrekord, Iran;Department of Mechanical Engineering, Technology Faculty, Firat University, 23119 Elazig, Turkey;Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam;Laboratory of Magnetism and Magnetic Materials, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam;

关键词: natural convection;    cavity;    numerical study;    nanofluid;    non-Newtonian;   

DOI  :  10.3390/pr8091011

来源: DOAJ

【 摘 要 】

Natural convection in cavities is an interesting subject for many researchers. Especially, in recent years, the number of articles written in this regard has grown enormously. This work provides a review of recent natural convection studies. At first, experimental studies were reviewed and, then, numerical studies were examined. Then, the articles were classified based on effective parameters. In each section, numerical studies were examined the parameters added to the cavity such as magnetic forces, fin, porous media and cavity angles. Moreover, studies on non-rectangular cavities were investigated. Free convection in enclosures depends more on the fluid velocity relative to the forced convection, leading to the opposite effect of some parameters that should essentially enhance rate of heat transfer. Nanoparticle addition, magnetic fields, fins, and porous media may increase forced convection. However, they can reduce free convection due to the reduction in fluid velocity. Thus, these parameters need more precision and sometimes need the optimization of effective parameters.

【 授权许可】

Unknown