Results 21 to 30 of about 1,634,449 (194)

Impact of Magnetic Fields and Fins on Entropy Generation, Thermal, and Hydrodynamic Performance in the Ferrofluids Flow within a Mini Channel [PDF]

Journal of Applied Fluid Mechanics
The present work reports a CFD study of the magneto-convection of a ferrofluid (Fe3O4/water) circulating in a mini-channel under the influence of different vortex generators (fins and permanent magnets).
L. Boutas, M. Marzougui, J. Zinoubi, S. Gannouni   +3 more
doaj   +1 more source

Experimental Study of a Thermal Plume Evolving Inside a Rectangular Tunnel: Effects of the Source Height

Walailak Journal of Science and Technology, 2014
The aim of this work is to simulate experimentally a plume of fire placed at different heights evolving inside a horizontal tunnel, in order to determine the effect of the source site on the plume structure.
Hatem SAAFI, Ahmedou Ould Mohamed MAHMOUD, Rejeb Ben MAAD   +2 more
doaj   +1 more source

Residential Building Energy Conservation in Mediterranean Climate Zone by Integrating Passive Solar and Energy Efficiency Design Strategies

Buildings, 2023
Residential buildings have a list of functions, and one of the top priories is the thermal comfort of its occupants. Thermal comfort can be one of the measurements of successful building performance, and it can be addressed in various ways to provide a ...
Michael Tesfaye Bekele, Cemil Atakara
doaj   +1 more source

Thermal Timescale Mass Transfer Rates in Intermediate-Mass X-ray Binaries [PDF]

, 2007
Thermal timescale mass transfer generally occurs in close binaries where the donor star is more massive than the accreting star. The mass transfer rates are usually estimated in terms of the Kelvin-Helmholtz timescale of the donor star.
Li, Xiang-Dong, Xu, Xiao-Jie
core   +1 more source

Investigating the Influence of Thermal Conductivity and Thermal Storage of Lightweight Concrete Panels on the Energy and Thermal Comfort in Residential Buildings

Buildings, 2023
Phase change materials (PCM) are integrated into lightweight concrete (LWC) panels to increase their thermal mass. However, the integration of PCM into LWC also increases the thermal conductivity of the panels, which may have a negative impact.
Dileep Kumar, Morshed Alam, Abhijeet Jayeshbhai Doshi   +2 more
doaj   +1 more source

Particle production in time-dependent gravitational fields: the expanding mass shell [PDF]

, 2002
We compute the production of particles from the gravitational field of an expanding mass shell. Contrary to the situation of Hawking radiation and the production of cosmological perturbations during cosmological inflation, the example of an expanding ...
Abramowitz M, Birell N D, Bogoliubov N N, Deutsch D, Dominik J Schwarz, Dowker J S, Fulling S A, Greiner W, Guth A, Hawking S W, Hawking S W, Hawking S W, Mukhanov V, Mukhanov V, Novikov I D, Sabine Hossenfelder, Unruh W G, Wald R M, Walter Greiner, Wheeler J A   +19 more
core   +2 more sources

Impact of Material Solutions and a Passive Sports Hall’s Use on Thermal Comfort

Energies, 2023
High outdoor temperatures and thermal gains due to solar radiation, which penetrates the interior of buildings as the climate warms up, pose a major challenge to maintaining thermal comfort in passive sports facilities.
Anna Dudzińska, Tomasz Kisilewicz, Ewelina Panasiuk   +2 more
doaj   +1 more source

Domestic Gas Meter Durability in Hydrogen and Natural Gas Mixtures

Energies, 2021
Blending hydrogen into the natural gas infrastructure is becoming a very promising practice to increase the exploitation of renewable energy sources which can be used to produce “green” hydrogen.
Jacek Jaworski, Paweł Kułaga, Giorgio Ficco, Marco Dell’Isola   +3 more
doaj   +1 more source

The general treatment of high/low energy particle interference phase in a gravitational field [PDF]

, 2000
The interference phase of the high energy mass neutrinos and the low energy thermal neutrons in a gravitational field are studied. For the mass neutrinos, we obtain that the phase calculated along the null is equivalent to the half phase along the ...
A. Beesham, C. Giunti, C. M. Zhang, C. Y. Cardall, D. Píriz, D. V. Ahluwalia, F. Boehm, H. C. Ohanian, H. Lipkin, J. Anandan, J. Audretsch, J. G. Pereira, J. J. Sakurai, J. N. Bahcall, J. R. Mureika, J. Wudka, K. Zuber, L. Stodolsky, L. Wolfenstein, M. Gasperini, N. Fornengo, R. Colella, T. Bhattachary, Y. Fukuda, Y. Grossman, Y. Kojima   +25 more
core   +2 more sources

Can oscillating scalar fields decay into particles with a large thermal mass? [PDF]

, 2005
We calculate the dissipation rate of a coherently oscillating scalar field in a thermal environment using nonequilibrium quantum field theory and apply it to the reheating stage after cosmic inflation.
Abbott, Affleck, Albrecht, Bakshi, Bakshi, Boyanovsky, Boyanovsky, Boyanovsky, Boyanovsky, Boyanovsky, Calzetta, Chou, Dolan, Dolgov, Giudice, Gleiser, Greiner, Guth, Hosoya, Jeon, Jordan, Jun'ichi Yokoyama, Keldysh, Kofman, Kofman, Kolb, Landsman, Linde, Linde, Matsubara, Morikawa, Murayama, Murayama, Sato, Schwinger, Traschen, Yamaguchi, Yamaguchi, Yokoyama, Yokoyama, Yoshimura   +40 more
core   +1 more source