TITLE

Analytical prediction of forced convective heat transfer of fluids embedded with nanostructured materials (nanofluids)

AUTHOR(S)
Vasu, V.; Krishna, K. Rama; Kumar, A. C. S.
PUB. DATE
September 2007
SOURCE
Pramana: Journal of Physics;Sep2007, Vol. 69 Issue 3, p411
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nanofluids are a new class of heat transfer fluids developed by suspending nanosized solid particles in liquids. Larger thermal conductivity of solid particles compared to the base fluid such as water, ethylene glycol, engine oil etc. significantly enhances their thermal properties. Several phenomenological models have been proposed to explain the anomalous heat transfer enhancement in nanofluids. This paper presents a systematic literature survey to exploit the characteristics of nanofluids, viz., thermal conductivity, specific heat and other thermal properties. An empirical correlation for the thermal conductivity of Al2O3 + water and Cu + water nanofluids, considering the effects of temperature, volume fraction and size of the nanoparticle is developed and presented. A correlation for the evaluation of Nusselt number is also developed and presented and compared in graphical form. This enhanced thermophysical and heat transfer characteristics make fluids embedded with nanomaterials as excellent candidates for future applications.
ACCESSION #
26997250

 

Related Articles

  • Critical Issues in Nanofluids Preparation, Characterization and Thermal Conductivity. Daxiong Wu; Haitao Zhu; Liqiu Wang; Lumei Liu // Current Nanoscience;Feb2009, Vol. 5 Issue 1, p103 

    Nanofluids are fluids containing suspended solid nanoparticles. It is expected that the nanofluids will be the next generation of heat transfer fluids due to their unique thermal properties. At present, the study on nanofluids is still in its infancy. Some issues became the barriers to the...

  • Studies on few Water Based Nanofluids Behavior at Heating. MOLDOVEANU, Mădălina Georgiana; MINEA, Adriana Alina // Advanced Materials Research;2015, Vol. 1128, p384 

    Application of nanoparticles provides an effective way of improving heat transfer characteristics of fluids. Particles less than 100 nm in diameter exhibit different properties from those of conventional solids. Compared with micron-sized particles, nanophase powders have much larger relative...

  • Review on Heat Transfer enhancement of nanofluids - Engine coolant. Manikandan, S.; Jancirani, J. // Advanced Materials Research;2014, Vol. 984-985, p1095 

    Heat transfer fluids are indispensable in heat transfer and exchange equipment. They determine the ability of the system to dissipate thermal energy. However, they are limited by their low convective heat transfer rates. Nanofluids are suspensions of nanomaterial and most of them are elements...

  • An analytical model for calculating thermal properties of two-dimensional nanomaterials. Liu, Te-Huan; Pao, Chun-Wei; Chang, Chien-Cheng // Applied Physics Letters;10/21/2013, Vol. 103 Issue 17, p171909 

    Most previous analytical theories for microscale heat transfer are limited to low temperatures (≤100 K). We present simple yet general analytical formulae which reveal the essential features of the thermal properties of two-dimensional nanomaterials in a wide range of temperatures by full...

  • Modeling of anisotropic flow and thermodynamic properties of magnetic nanofluids induced by external magnetic field with varied imposing directions. Dongxing Song; Dengwei Jing; Bing Luo; Jiafeng Geng; Yuxun Ren // Journal of Applied Physics;2015, Vol. 118 Issue 4, p1 

    Magnetic field can enhance both thermal conductivity and Lorentz force resistance of the magnetic nanofluids (MNFs), in which the former is favored while the latter often leads to pressure drop of the flow. It is assumed that there would exist a balance between the magnetic field induced thermal...

  • Selection of nanofluid for heat transfer applications from existing models of thermal conductivity. Subramaniyan, A. L.; Kumaraguruparan, G.; Venkatesan, R.; Vignesh, A. // International Journal of Nano Dimension;Summer2014, Vol. 5 Issue 3, p213 

    Nanofluids are gaining much importance over the past decade due to their enhanced thermal conductivity, specific heat, cooling capacity, electrical conductivities. Novel properties of nanofluids are yet to be explored to the highest potential applications. One of the prominent applications of...

  • Effective thermal conductivity of condensed polymeric nanofluids (nanosolids) controlled by diffusion and interfacial scattering. NISHA, M R; JAYALAKSHMY, M S; PHILIP, J // Pramana: Journal of Physics;Nov2013, Vol. 81 Issue 5, p849 

    Thermal properties of polymeric nanosolids, obtained by condensing the corresponding nanofluids, are investigated using photothermal techniques. The heat transport properties of two sets of polyvinyl alcohol (PVA) based nanosolids, TiO 2/PVA and Cu/PVA, prepared by condensing the respective...

  • A Model to Predict the Thermal Difusivity of Aqueous Nanofluids. Hosseini, S. Sh.; Adam, N. M.; Azmi, Z; Shahrjerdi, A. // Journal of Applied Sciences Research;Sep2011, Vol. 7 Issue 9, p975 

    Thermal difusivity is one of the properties of fluids. It is defined as speed of dispersant of heat in fluids. Knowing the thermal difusivity coeficient is necessary for most calculation of fluid mechanic or heat transfer. It is usually used the proportion of thermal conductivity above time of...

  • Is Classical Energy Equation Adequate for Convective Heat Transfer in Nanofluids? Fan, Jing; Wang, Liqiu // Advances in Mechanical Engineering (Hindawi Publishing Corporati;2010, Vol. 2, p1 

    To address whether the heat transfer in nanofluids still satisfies the classical energy equation, we theoretically examine the macroscale manifestation of the microscale physics in nanofluids. The microscale interaction between nanoparticles and base fluids manifests itself as thermal...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics