Natural convection from a vertical wall embedded in a non-Darcy porous medium filled with nanofluids

Abstract

If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -This work aims to focus on the study of natural convection heat transfer characteristics in a vertical wall embedded in a non-Darcy porous medium filled with nanofluids. Design/methodology/approach -The governed partial differential equations are transformed into ordinary differential equations which are obtained by similarity solution and then have been solved through homotopy analysis method. Findings -The results show that Cu-water as nanofluid enhances the local Nusselt number more than other nanofluids. Originality/value -Nanoparticles and nanofluid enhance the local Nusselt number.

Thermophoresis and Brownian effects on natural convection of nanofluids in a square enclosure with two pairs of heat source/sink

“…More recently, various aspects of the problems of nanofluids were investigated and published in this journal, such as on forced, free and mixed convection of nanofluids past vertical and horizontal surfaces. We mention here only those by Makinde (2013), Tavakoli et al (2013), Sun and Pop (2014), Trambitas et al (2014), Roşca et al (2014) and Patulescu et al (2014) among others.…”

Boundary layer flow of a nanofluid past a permeable exponentially shrinking surface with convective boundary condition using Buongiorno’s model

“…In this respect the model is more realistic physically than that employed by several previous authors. Flow of a nanofluid over a linearly stretching sheet has been studied by Khan and Pop (2010), Khan et al (2014), Mushtaq et al (2014), Mustafa et al (2012, the Falkner-Skan problem for flow of a nanofluid with with prescribed surface heat flux is investigated by Yacob et al (2011), the forced convection boundary layer flow past a nonisothermal thin needles in nanofluids by Grosan and Pop (2011), natural convection from a vertical wall embedded in a non-Darcy porous medium filled with nanofluids by Tavakoli et al (2013), mixed convective boundary layer flow over a vertical cylunder embedded in a porous medium saturated with a nanofluid by Gorla and Hossain (2013), etc. Several authors, Makinde andAziz (2011), Rahman et al (2012), and Rahman and Eltayeb (2013), Makinde (2013), etc., discussed the effect of convective boundary conditions on the forced convection flow past a flat plate and past a wedge.…”

Buoyant heat transfer of nanofluids in a vertical porous annulus: a comparative study of different models

“…Reddy et al (2022) analyzed magnetic field and internal heat generation influence on magneto-free convective phenomena in a Cu –water nanofluid-filled porous square geometry and observed retardation in heat transport rate with an increment in magnetic intensity. Investigation of thermal behavior in different non-annular finite geometries containing nanofluid saturated porous media has been recorded in the literature (Tavakoli et al , 2013; Sheremet and Pop, 2015a, 2015b; Umavathi et al , 2017; Ghalambaz et al , 2019; Marzougui et al , 2021; Khan et al , 2022; Al-Farhany et al , 2021a ). Buoyant convective thermal transport from a vertical wall embedded in nanofluid-saturated non-Darcy porous medium has been studied by considering three different nanoparticles ( Cu , Al 2 O 3 and TiO 2 ) and obtained maximum thermal transport in the case of Cu – H 2 O nanofluid (Tavakoli et al , 2013).…”