Results 31 to 40 of about 725,498 (217)

Computational fluid dynamics simulation of subcooled flow boiling in vertical rectangular 2-mm narrow channel

open access: yesAdvances in Mechanical Engineering, 2015
This work proposes and discusses a new wall boiling model for a 2-mm narrow rectangular channel with a copper heating surface at atmospheric pressure.
Lixin Yang, Ang Guo, Wang Zhang
doaj   +1 more source

Theoretical and experimental evaluation on the electrical properties of multi-junction solar cells in a reflective concentration photovoltaic system

open access: yesEnergy Reports, 2022
Solar photovoltaic systems represent an important technology for renewable energy utilization and have broad potential for application and development. However, the further development of solar photovoltaic systems is hindered by their higher generation ...
Zilong Wang   +4 more
doaj   +1 more source

Applications of two-phase flow and heat transfer in compact heat exchangers [PDF]

open access: yes, 2008
Three applications of two-phase flow and heat transfer in plate-fin heat exchangers have been studied. A dephlegmator is a heat exchanger in which reflux condensation of a vapour mixture occurs, and plate-fln versions have importance in cryogenic gas ...
Lintern, Andrew Charles
core   +1 more source

Duality and Heat flow

open access: yesAdvances in Mathematics
We reveal the relation between the Legendre transform of convex functions and heat flow evolution, and how it applies to the functional Blaschke-Santalo inequality. We also describe local maximizers in this inequality.
Cordero-Erausquin, Dario   +3 more
openaire   +4 more sources

Local Heat Transfer Distribution and Effect of Instabilities During Flow Boiling in a Silicon Microchannel Heat Sink

open access: yes, 2011
Flow boiling of the perfluorinated dielectric fluid FC-77 in a silicon microchannel heat sink is investigated. The heat sink contains 60 parallel microchannels each of 100 lm width and 389 lm depth.
Garimella, Suresh V.   +4 more
core   +1 more source

Investigation of Broadband Optical Nonlinear Absorption and Transient Dynamics in Orange IV Containing Azobenzene

open access: yesMolecules, 2023
Broadband reverse saturable absorption is systematically investigated via Z-scan, transient absorption spectrum (TAS). The excited state absorption and negative refraction of Orange IV are observed in the Z-scan experiment at 532 nm.
Quanhua Wu   +9 more
doaj   +1 more source

Numerical investigation of turbulent flow heat transfer and pressure drop of AL2O3/water nanofluid in helically coiled tubes [PDF]

open access: yes, 2013
Passive convective heat transfer enhancement can be achieved by improving the thermo-physical properties of the working fluid, changing flow geometry or both.
Mahmoud, Saad   +7 more
core   +1 more source

Lattice Boltzmann simulation of wetting gradient accelerating droplets merging and shedding on a circumferential surface

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
A lattice Boltzmann method (LBM) based on Shan-Chen pseudo-potential model is used to investigate the process of droplets merging and shedding on a gradient wetting circular surface.
Lu Chen   +5 more
doaj   +1 more source

Heat Flow from Polygons [PDF]

open access: yesPotential Analysis, 2019
We study the heat flow from an open, bounded set $D$ in $\R^2$ with a polygonal boundary $\partial D$. The initial condition is the indicator function of $D$. A Dirichlet $0$ boundary condition has been imposed on some but not all of the edges of $\partial D$.
M. van den Berg   +2 more
openaire   +5 more sources

Flow maldistribution in industrial air heaters and its effect on heat transfer

open access: yes, 2014
Flow maldistribution in cross-flow heat exchangers used for industrial air heaters or recuperators is fairly common and can lead to a number of undesirable effects, one of which is deterioration in the thermal performance.
Walmsley, Michael R.W.   +4 more
core   +1 more source

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