Topic
Nanofluid
About: Nanofluid is a research topic. Over the lifetime, 23986 publications have been published within this topic receiving 677384 citations.
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TL;DR: In this paper, experimental investigations and theoretical determination of effective thermal conductivity and viscosity of magnetic Fe3O4/water nanofluid are reported, and theoretical equations are developed to predict thermal conductivities and viscoales of nanoflids without resorting to the well established Maxwell and Einstein models, respectively.
336 citations
TL;DR: In this paper, a similarity transformation is used to reduce the governing momentum and energy equations into non-linear ordinary differential equations, and the resulting differential equations with the appropriate boundary conditions are solved by shooting iteration technique together with fourth-order Runge-Kutta integration scheme.
334 citations
TL;DR: In this article, a review of previous publications about nanofluid hydrothermal treatment in the presence of magnetic field is presented, where Ferrohydrodynamic and Magnetohydrodynamic (MHD) can take role in simulations.
334 citations
TL;DR: In this article, the authors reported measured vapor generation efficiencies of 69% at solar concentrations of 10 sun using graphitized carbon black, carbon black and graphene suspended in water, representing a significant improvement in both transient and steady-state performance over previously reported results.
333 citations
TL;DR: In this paper, a comprehensive experimental dataset is obtained for thermal conductivity of nanofluids with variation in nanoparticle material, base liquid, particle size, particle volume fraction and suspension temperature.
Abstract: One of the reasons for the controversy on the thermal conductivity enhancement of nanofluids is the lack of extensive data over a wide range of parameters. In the present study, a comprehensive experimental dataset is obtained for thermal conductivity of nanofluids with variation in nanoparticle material, base liquid, particle size, particle volume fraction and suspension temperature. Transient hot wire (THW) equipment as well as Temperature Oscillation equipment are developed for the measurement of thermal conductivity of liquids. The measurements show that, in general, thermal conductivity values of all the nanofluids are higher than that of the equivalent macro-particle suspensions. Metallic nanofluids are found to give higher enhancements than that of oxide nanofluids. Particle size is found to have a tremendous impact on the thermal conductivity of nanofluids with enhancement in the thermal conductivity increasing almost inversely with reduction in the particle size. Increase in temperature significantly increases the thermal conductivity of a nanofluid. It is also observed that the thermal conductivity of nanoparticle suspensions is relatively higher at lower volume fractions, thereby giving a non-linear dependence on the particle volume fraction.
333 citations