Sunil Bharati - Academia.edu (original) (raw)
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International Journal of Engineering Research and Applications (IJERA)
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The computational fluid dynamics (CFD) model equations are solved to predict the hydrodynamic and... more The computational fluid dynamics (CFD) model equations are solved to predict the hydrodynamic and thermal behaviour of the exchanger. The geometry of the problem and meshing of it have been made in ANSYS 14.0. The models have been solved by ANSYS Fluent 14.0 solver. Water and its Nano fluids with alumina (A 2 O 3) are used as the coolant fluid in the micro channel heat sink. The relation between heat transfer coefficient and thermal conductivity of the fluid i.e. h ∝ k is proved in the present study. Thus use of Nano fluids has been found beneficial both in laminar and turbulent zone. The result shows that Nano fluids help to increase the heat transfer coefficient by 15% and 12% respectively in laminar and turbulent zone. The entrance length for the fully developed velocities depends on Reynolds number. The temperature rise between outlet and inlet depends on the Reynolds number, Re and Peclet number, Pe Temperature distribution is found to be independent of radial position even for...
The computational fluid dynamics (CFD) model equations are solved to predict the hydrodynamic and... more The computational fluid dynamics (CFD) model equations are solved to predict the hydrodynamic and thermal behaviour of the exchanger. The geometry of the problem and meshing of it have been made in ANSYS 14.0. The models have been solved by ANSYS Fluent 14.0 solver. Water and its Nano fluids with alumina (A 2 O 3) are used as the coolant fluid in the micro channel heat sink. The relation between heat transfer coefficient and thermal conductivity of the fluid i.e. h ∝ k is proved in the present study. Thus use of Nano fluids has been found beneficial both in laminar and turbulent zone. The result shows that Nano fluids help to increase the heat transfer coefficient by 15% and 12% respectively in laminar and turbulent zone. The entrance length for the fully developed velocities depends on Reynolds number. The temperature rise between outlet and inlet depends on the Reynolds number, Re and Peclet number, Pe Temperature distribution is found to be independent of radial position even for...