H2O based different nanofluids with unsteady condition and an external magnetic field on permeable channel heat transfer
| Autor: | Ganji Domairry, Mohit Biglarian, O. Pourmehran, M. Rahimi Gorji |
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| Rok vydání: | 2017 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry 020209 energy Energy Engineering and Power Technology Reynolds number Thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Hartmann number Physics::Fluid Dynamics Expansion ratio symbols.namesake Fuel Technology Nanofluid Heat transfer Volume fraction 0202 electrical engineering electronic engineering information engineering symbols Magnetohydrodynamic drive 0210 nano-technology Lorentz force |
| Zdroj: | International Journal of Hydrogen Energy. 42:22005-22014 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.07.085 |
| Popis: | This paper investigates numerically the problem of unsteady magnetohydrodynamic nanofluid flow and heat transfer between parallel plates due to the normal motion of the porous upper plate. The governing equations are solved via the fourth-order Runge-Kutta method. Different kind of nanoparticles is examined. The effects of kind of nanoparticle, nanofluid volume fraction, expansion ratio, Hartmann number, Reynolds number on velocity and temperature profiles are considered. Also effect of different types of nanoparticles is examined. Results indicate that velocity decreases with increase of Hartmann number due to effect of Lorentz forces. Rate of heat transfer increase with increase of nanofluid volume fraction, Hartmann number and Reynolds number but it decreases with increase of expansion ratio. Also it can be found that choosing copper as a nanoparticle leads to highest enhancement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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