Results 101 to 110 of about 18,592 (200)

Critical Velocity and Dissipation of an ultracold Bose-Fermi Counterflow

open access: yes, 2015
We study the dynamics of counterflowing bosonic and fermionic lithium atoms. First, by tuning the interaction strength we measure the critical velocity vc of the system in the BEC-BCS crossover in the low temperature regime and we compare it to the ...
Chevy, Frédéric   +5 more
core   +2 more sources

The two-fluid extended model of superfluid helium

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
In this paper we perform the first numerical comparison between the two main existing models of superfluid helium: the two-fluid model proposed by Landau and the one-fluid extended model proposed from the extended thermodynamics.
Luca Galantucci   +2 more
doaj   +1 more source

Thermal Performance Improvement of Cross-Flow Double-Layered Microchannel Heat Sinks through Proper Header Design

open access: yesEnergies
Over the past two decades, double-layered microchannel heat sinks (DL-MCHs) have become increasingly popular as they provide effective performance for electronic cooling, particularly in the counterflow configuration.
Stefano Savino, Carlo Nonino
doaj   +1 more source

Calculation of thermal solid plate heating in conditions of theoretical counterflow

open access: yesЛитьë и металлургия, 2001
А mathematical model of thermal solid plate heating in conditions of theoretical counterflow^ is worked out. The analysis is given of heating dynamics at various values of ratio of water equivalents of metal and gas.
V. I. Timoshpolsky   +4 more
doaj  

Experimental study of turbulent flow in a scaled RPV model by PIV technology

open access: yesNuclear Engineering and Technology
The turbulent flow in reactor pressure vessel (RPV) of pressurized water reactor (PWR) is important for the flow rate distribution at core inlet. Thus, it is vital to study the turbulent flow phenomena in RPV.
Luguo Liu   +5 more
doaj   +1 more source

Performance assessment of planar membrane dehumidifiers: Influence of flow configuration and wet-side conditions in crossflow design

open access: yesCase Studies in Thermal Engineering
The present study conducts an in-depth numerical examination of heat and mass transfer attributes in a crossflow planar membrane dehumidifier, emphasizing the dehumidifier's performance under various operating conditions.
Wen-Ken Li, Shih-Pin Yang, Nien-Tsu Chou
doaj   +1 more source

Analysis of temperature state of massive flat ingot in conditions of radiational contraflow

open access: yesЛитьë и металлургия, 2003
There is given the analysis of the task solution of counterflow heat exchange at heating of solids of classic form taking into account non-linearities of I and II type. As a mathematical apparatus there is used “the method of equivalent sources of energy”
Ju. S. Postolnik   +7 more
doaj  

Solving of the problem of heating process of prismatic alloys and slugs in regime of contraflow

open access: yesЛитьë и металлургия, 2003
For the first time in the theory of counterflow heat exchange there is solved the problem of heating of the two-dimensional prismatic slug at its heating by convention current.
Ju. S. Postolnik   +4 more
doaj  

Flow pattern analyzes of a two thin films of insoluble in each other liquids flow on a vertical surface subject to influence of a gas stream.

open access: yesТонкие химические технологии, 2008
A downward flow of a two thin films of insoluble in each other liquids subject to influence of a gas counterflow is studied. A velocity profiles in both thin films, an average velocities and a discharges has been found. Dependences for evaluating optimal
M. K. Zakharov   +2 more
doaj  

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