- Published on 13 July 2020
The fluids which do not obey the Newton's law of viscosity are called non-Newtonian fluids. In general, the viscosity of non-Newtonian fluids changes with shear stress and the shear rate non-linearly varies with shear stress. The non-Newtonian fluids are classified as viscoelastic, rheopectic, thixotropic, shear thickening, and shear thinning fluids. Examples of fluids that exhibit the viscoelastic nature are oils, liquid polymers, glycerine, some lubricants, and mucus.
Fluids that exhibit shear thinning nature are blood, motor oil, ketchup, nail polish, syrups, molasses, paper pulp in water, latex paint, and whipped cream. Shear thinning fluids are useful in lubricating fast-moving engine parts manufacture, polymer industries, and biomedical industries. In view of these applications, a number of mathematical models have been proposed to obtain thorough cognition of the mechanics of non-Newtonian fluid flows. The non-Newtonian fluid models include Bingham plastic, Burgers fluid, Carreau fluid, Casson fluid, Cross fluid, Eyring Powell fluid etc.
A wide range of applications for nanofluids in different areas such as biomedical, lubrication, surface coating, petroleum industry, environmental remediation, and electronics cooling systems have been reported in the literature. The seven slip mechanisms such as inertia, Brownian diffusion, thermophoresis, diffusiophoresis, Magnus effect, fluid drainage, and gravity have been analysed and concluded that Brownian diffusion and thermophoresis are important slip mechanisms in nanofluids. Based on this finding, many researchers have adopted various non-Newtonian fluid models to analyse the transport properties of non-Newtonian nanofluids.
The aim of this special issue is to comprise original theoretical/experimental research articles together with a brief review, addressing the recent developments and research efforts on the transport properties of non-Newtonian nanofluids with the purpose to provide guidelines for future research directions.
The topics include, but are not limited to:
- Rheological characteristics of non-Newtonian nanofluids
- Modelling non-Newtonian nanofluid flows: challenges and applications
- Non-Newtonian nanofluid flow in different geometries and applications
- The impact of various external forces on flows
- Magnetoconvection of non-Newtonian fluid: Dynamical system and chaos
- Dynamics of flow, dynamical systems, turbulent flow
Authors are invited to submit their original research and short reviews on the theme of this special issue. Manuscripts should be prepared following the instructions for authors using the latex template of EPJ ST, which can be downloaded here. Articles should be submitted to the Editorial Office of EPJ ST via the submission system at https://articlestatus.edpsciences.org/is/epjst/home.php by selecting “Transport properties of non-Newtonian nanofluids and applications” as special issue.
Santo Banerjee, Politecnico di Torino, Italy and
Sivaraj R, Vellore Institute of Technology, Vellore, India