Rheological behaviour of various metal-based nano-fluids between rotating discs: a new insight
| Autor: | Mohammad Mohsen Sarafraz, M. Rahimi-Gorji, Davood Domiri Ganji, O. Pourmehran |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
020209 energy General Chemical Engineering Heat transfer enhancement Reynolds number 02 engineering and technology General Chemistry Mechanics Nusselt number Physics::Fluid Dynamics symbols.namesake Viscosity Nanofluid Thermal conductivity Rheology Heat transfer 0202 electrical engineering electronic engineering information engineering symbols |
| Zdroj: | Journal of the Taiwan Institute of Chemical Engineers. 88:37-48 |
| ISSN: | 1876-1070 |
| DOI: | 10.1016/j.jtice.2018.04.004 |
| Popis: | In this study, nanofluid flow and heat transfer between two contracting and rotating disks are investigated. Brownian motion is considered to simulate viscosity of nanofluid and Patel model is used to predict the behavior of thermal conductivity of nanofluid. The governing equations are solved via the fourthorder Runge–Kutta method. Different kinds of nanoparticles are examined. Effects of active parameters such as nanoparticle volume fraction, rotational Reynolds number, injection Reynolds number, and expansion ratio are considered. Results indicate that Nusselt number is a decreasing function of expansion ratio while it is increasing function of other parameters such as nanoparticle volume fraction, rotational Reynolds number, and injection Reynolds number. Also, it can be found that maximum value of heat transfer enhancement is obtained by selecting the silver (Ag) as nanoparticle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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