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

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      https://www.ias.ac.in/article/fulltext/pram/069/03/0411-0421

    • Keywords

       

      Nanofluids; thermal properties; conductivity models; empirical relation.

    • 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.

    • Author Affiliations

       

      V Vasu1 K Rama Krishna2 A C S Kumar3

      1. Department of Production Engineering, V R Siddhartha Engineering College, Vijayawada 520 007, India
      2. Freshmen Engineering Department, K L College of Engineering, Vaddeswaram 522 502, India
      3. Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Hyderabad 500 072, India
    • Dates

       
  • Pramana – Journal of Physics | News

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