Heat Generation/Absorption Effect on Natural Convection Heat Transfer in a Square Enclosure Filled with a Ethylene Glycol - Copper Nanofluid Under Magnetic Field
Mohamed Bechir Ben Hamida,
Kamel Charrada
Issue:
Volume 1, Issue 1, June 2015
Pages:
1-16
Received:
1 June 2015
Accepted:
16 June 2015
Published:
17 June 2015
DOI:
10.11648/j.ajme.20150101.11
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Abstract: This paper examines the natural convection in a square enclosure that is filled with a nanofluid. This nanofluid with Ethylene Glycol based containing Copper nanoparticle is influenced by a uniform horizontal magnetic field and uniform heat generation or heat absorption. The enclosure is bounded by two isothermal vertical walls at different temperatures and by two horizontal adiabatic walls. The governing equations needed to deal this problem (mass, momentum, and energy) are solved numerically using the commercial simulation software COMSOL Multiphysics. In order to increase the natural convective heat transfer in a square cavity, the effect of heat generation or absorption on the isothermal, streamline contours and the Nusselt number are studied when the Prandtl number is Pr = 151.
Abstract: This paper examines the natural convection in a square enclosure that is filled with a nanofluid. This nanofluid with Ethylene Glycol based containing Copper nanoparticle is influenced by a uniform horizontal magnetic field and uniform heat generation or heat absorption. The enclosure is bounded by two isothermal vertical walls at different tempera...
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Structure Evolution in Odd-Even Eu- 155 Nucleus within IBFM-2
Saad N. Abood,
Mohamed Bechir Ben Hamida,
Laith A. Najim
Issue:
Volume 1, Issue 1, June 2015
Pages:
17-24
Received:
3 June 2015
Accepted:
18 June 2015
Published:
19 June 2015
DOI:
10.11648/j.ajme.20150101.12
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Abstract: In this work, We investigate the energy levels and the electromagnetic transition probabilities B(E2) and B(M1) for Eu-155 within framework of IBFM-2. The results are in reasonably agreement with the available experimental values. The result of an IBFM-2 multilevel calculation with the 3s1/2, 2d3/2, 2d5/2, and 1g7/2 single particle orbits is reported for the positive parity states of the odd-mass Eu-155 isotopes. Also, an IBM-2 calculation is presented for the low-lying states in the even-even Sm-154 core nucleus.
Abstract: In this work, We investigate the energy levels and the electromagnetic transition probabilities B(E2) and B(M1) for Eu-155 within framework of IBFM-2. The results are in reasonably agreement with the available experimental values. The result of an IBFM-2 multilevel calculation with the 3s1/2, 2d3/2, 2d5/2, and 1g7/2 single particle orbits is report...
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