Special Issue "Recent Trends in Nanofluids: Modelling and Simulations"

Submission Deadline: 31 December 2021 (closed)
Guest Editors
Prof. Ilyas Khan, Majmaah University, Saudi Arabia
Dr. Riaz Ahmad, Yibin University, China
Prof. Asma Khalid, SBK Women’s University, Pakistan
Dr. Hassan Waqas, Government College University Faisalabad, Pakistan

Summary

Usual heat transfer fluids have low thermal conductivity and this disadvantage provides low performance of such fluids. A new method to enhance thermal conductivity is dispersing solid particles into the base fluids. The nanoparticles used in nanofluids are typically made of metals, oxides, carbides, or carbon nanotubes. Common base fluids include water, ethylene glycol and oil. Amongst the various types of nanoparticles, clay nanoparticles are comparatively less investigated, although in chemical processing, such types of nanoparticles play a pivotal role. Clay nanoparticles, for example, were successfully utilized for the conservation of artwork materials such as marble and porous stones, bronze surfaces, bread-made artifacts, and archeological woods and paper. Nanoparticles are also used in various shapes and sizes. However, researchers are continuously working on nanofluids with new developments. A counterexample is Hybrid nanofluids. This is a new group/type of enhanced working fluids, engineered with enhanced thermo-physical properties. The hybrid nanofluids profit from the thermo-physical properties of more than one type of nanoparticles. Nanoparticles and nanofluids, are equally important in all sciences such as chemistry, physics, thermal engineering, and applied mathematics, indeed. Therefore, researchers from various fields are involved in conducting interesting researches on this topic from the theoretical side as well as from experimental aspects. These researchers are interested to develop the concept of nanofluids due to their enhanced thermal properties and energy saving effect. However, there is deficiency/gap in the literature, and we are in need of more theoretical and experimental multidisciplinary research on this topic to achieve industrial success. This special issue includes a variety of scientific topics related to the developments in the field of nanotechnology, heat transfer and chemical processes and encourage the researchers to present their latest original studies on nanofluids. 


Keywords
Nanofluids in chemical reactions
Heat transfer in nanofluids
Fractional models of nanofluids
Hybrid nanofluids
Shape and size effects

Published Papers
  • Numerical Simulation of Reiner–Rivlin Nanofluid Flow under the Influence of Thermal Radiation and Activation Energy over a Rotating Disk
  • Abstract In current study, the numerical computations of Reiner–Rivlin nanofluid flow through a rotational disk under the influence of thermal radiation and Arrhenius activation energy is considered. For innovative physical situations, the motile microorganisms are incorporated too. The multiple slip effects are considered in the boundary conditions. The bioconvection of motile microorganism is utilized alongside nanofluids to provide stability to enhanced thermal transportation. The Bioconvection pattern in various nanoparticles accredits novel applications of biotechnology like the synthesis of biological polymers, biosensors, fuel cells, petroleum engineering, and the natural environment. By deploying some suitable similarity transformation functions, the governing partial differential equations… More
  •   Views:938       Downloads:407        Download PDF

  • Bioconvection Cross Diffusion Effects on MHD Flow of Nanofluids over Three Different Geometries with Melting
  • Abstract Currently, nanofluid is a hot area of interest for researchers. The nanofluid with bioconvection phenomenon attracted the researchers owing to its numerous applications in the field of nanotechnology, microbiology, nuclear science, heat storage devices, biosensors, biotechnology, hydrogen bomb, engine of motors, cancer treatment, the atomic reactor, cooling of devices, and in many more. This article presents the bioconvection cross-diffusion effects on the magnetohydrodynamic flow of nanofluids on three different geometries (cone, wedge, and plate) with mixed convection. The temperature-dependent thermal conductivity, thermal diffusivity, and Arrhenius activation energy applications are considered on the fluid flow with melting phenomenon. The flow is… More
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  • Similarity Analytic Solutions of a 3D-Fractal Nanofluid Uncoupled System Optimized by a Fractal Symmetric Tangent Function
  • Abstract The science of strategy (game theory) is known as the optimal decision-making of autonomous and challenging players in a strategic background. There are different strategies to complete the optimal decision. One of these strategies is the similarity technique. Similarity technique is a generalization of the symmetric strategy, which depends only on the other approaches employed, which can be formulated by altering diversities. One of these methods is the fractal theory. In this investigation, we present a new method studying the similarity analytic solution (SAS) of a 3D-fractal nanofluid system (FNFS). The dynamic evolution is completely given by the concept of… More
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  • Bioconvection Mangnetohydrodynamic Tangent Hyperbolic Nanofluid Flow with Quartic Chemical Reaction Past a Paraboloid Surface
  • Abstract In this numerical study, the effect of quartic autocatalysis type of chemical reaction, buoyancy force and thermal radiation phenomenon and magnetic effect on tangent hyperbolic nanofluid past an upper horizontal surface of a paraboloid has been studied. By considering the Buongiorno model approach, a diffusion of unequal coefficients in the presence of gyrotactic microorganism is discussed. Implementation of microorganism's idea is used to stabilize the nanoparticles through bioconvection. The modeled PDEs of the problems are converted into nonlinear ODEs with the assistant of the similarity transformations. To tackle nonlinear ODEs, MATLAB package bvp4c is used. In addition, a hallmark of… More
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  • Melting Characteristics of a Phase Change Material Mixed with Nano Particles of Cobalt Oxide Bounded in a Trapezoidal Structure
  • Abstract A novel trapezoidal design for storage of heat energy through melting of phase-change material (PCM) is investigated. Latent heat thermal energy storage system (LHTES) is a promising option to diminish mis-match between energy consumption and supply. For this purpose, Paraffin: Rubitherm-35 (RT35) material is successively melted in aluminum structure which is heated from one side and the other sides are kept adiabatic. Melting of PCM is observed experimentally and melt fronts are photographed for various time lengths. The fluid-solid module in COMSOL Multiphysics 5.4 has been utilized. The transient heat conduction with enthalpy function is hired. Simulations are carried out… More
  •   Views:578       Downloads:440        Download PDF

  • Empirical Thermal Investigation of Oil–Immersed Distribution Transformer under Various Loading Conditions
  • Abstract The distribution transformer is the mainstay of the power system. Its internal temperature study is desirable for its safe operation in the power system. The purpose of the present study is to determine direct comprehensive thermal distribution in the distribution transformers for different loading conditions. To achieve this goal, the temperature distribution in the oil, core, and windings are studied at each loading. An experimental study is performed with a 10/0.38 kV, 10 kVA oil–immersed transformer equipped with forty–two PT100 sensors (PTs) for temperature measurement installed inside during its manufacturing process. All possible locations for the hottest spot temperature (HST)… More
  •   Views:1198       Downloads:782        Download PDF