Calculation of Heat Transfer upon the Laminar Flow of Liquid in a Cylindrical Channel in the Presence of Axial Thermal Conductivity

2019 ◽  
Vol 57 (2) ◽  
pp. 279-282
Author(s):  
Yu. V. Vidin ◽  
R. V. Kazakov
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Laminar Flow ◽  
Cylindrical Channel

scholarly journals Heat transfer intensification of Zirconia/water nanofluid

2017 ◽  
Vol 13 ◽  
pp. 01-08
Author(s):  
Mohamed Iqbal Shajahan ◽  
Chockalingam Sundar Raj ◽  
Sambandan Arul ◽  
Palanisamy Rathnakumar
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Laminar Flow ◽  
Friction Factor ◽  
Volume Concentration ◽  
Constant Heat Flux ◽  
Particle Volume ◽  
Heat Transfer Intensification ◽  
Nusselt Numbers ◽  
Thermal Analyser

This paper investigated convective heat transfer and friction factor of ZrO2/H2O nanofluid through a circular pipe under laminar flow condition with constant heat flux. Nanofluid is prepared for 0.5, 0.75 and 1% volume concentrations with yttrium oxide surfactant. Nanofluid’s thermal conductivity and viscosity is measured by KD2 Pro thermal analyser and Brookfield viscometer respectively. Results showed that the thermal conductivity and viscosity increased with increase in particle volume concentration. These nanofluids are experimented in a forced convection system, first heat transfer characteristics of DI (Deionised) water  under laminar flow in a copper tube measured, then three nanofluids are carried out the tests, results revealed that the enhanced Nusselt numbers of 21.09,28.05 and 35.73%  at the 0.5, 0.75 and 1% volume concentrations, There is no excess penalty in pumping power  and results showed  less variations in friction factor for nanofluids comparatively with the base fluid DIWater.

scholarly journals Investigation of Thermal Conductivity and Convective Heat Transfer of Alumina Nanofluids under Laminar Flow

2013 ◽  
Vol 17 (2) ◽  
pp. 78-86
Author(s):  
Choi Seung-Il ◽  
Hafizur-Rehman Hafizur-Rehman ◽  
Yoon-Sub Eom ◽  
Myoung-Kuk Ji ◽  
Jun-Hyo Kim ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Laminar Flow ◽  
Convective Heat Transfer ◽  
Convective Heat

Simulation of the Heat Transfer to a Laminar Flow in a PRIMIX Static Mixer

2004 ◽  
Author(s):  
R. F. Mudde ◽  
R. J. R. Van de Kleij ◽  
R. Beugels
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Laminar Flow ◽  
Numerical Simulations ◽  
Tube Wall ◽  
Heated Wall ◽  
Static Mixer ◽  
Laminar Regime ◽  
Static Mixers ◽  
Process Fluid

The heat transfer from the wall to the process fluid in a PRIMIX helical static mixer has been investigated using numerical simulations. The flow is in the laminar regime, Re = 7 to 18. The simulations concentrate on heat transfer from a heated wall to the process fluid. Two different mixers are examined. A conventional one in which the elements are not connected to the wall of the tube and a special one, in which the elements are soldered to the tube wall. In the latter case the heat transfer is enhanced by about 23% which is attractive when dealing with fluids with a low thermal conductivity. The results of the numerical simulations are compared to experiments, both with soldered and without soldered elements. The comparison is good, showing the capabilities of numerical simulations for studying and optimizing heat transfer in static mixers.

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