Results 1 to 10 of about 159,995 (298)

Influence of heater size on critical heat flux in flat microchannels with intense localized heating [PDF]

open access: yesE3S Web of Conferences, 2023
Experiments were carried out on flow boiling in mini- and micro- channels under local heating for different heater size. It was found that with an increase in the channel height in the range of 0.2–3.7 mm, the intensity of heat transfer and the critical ...
Pukhovoy Maxim V.   +2 more
doaj   +2 more sources

Doppler lidar observations of sensible heat flux and intercomparisons with a ground-based energy balance station and WRF model output [PDF]

open access: yesMeteorologische Zeitschrift, 2009
During the Convective and Orographically induced Precipitation Study (COPS), a scanning Doppler lidar was deployed at Achern, Baden-Wüttemberg, Germany from 13th June to 16th August 2007.
Jenny Davis   +5 more
doaj   +3 more sources

The effect of a heater thin porous coating on the critical heat flux in flat microchannels with intense localized heating [PDF]

open access: yesE3S Web of Conferences
Experiments were carried out on flow boiling in mini- and microchannels with non-uniform heating (channel width 30 mm, size of centrally located heater 3x3 mm2) with smooth and porous heater surfaces.
Pukhovoy Maxim, Zaitsev Dmitry
doaj   +2 more sources

Numerical simulation of the gas flow with radiation and heat transfer [PDF]

open access: yesEPJ Web of Conferences, 2022
In this article we focus on the heating of the solid body placed in the vicinity of the intense heat source. We simulate the heat transfer caused by the direct contact with surrounding heated gas. Furthermore it is necessary to take into account the heat
Česenek Jan   +2 more
doaj   +1 more source

Assessing IDDES-Based Wall-Modeled Large-Eddy Simulation (WMLES) for Separated Flows with Heat Transfer

open access: yesFluids, 2021
The Wall-modeled Large-eddy Simulation (WMLES) methods are commonly accompanied with an underprediction of the skin friction and a deviation of the velocity profile. The widely-used Improved Delayed Detached Eddy Simulation (IDDES) method is suggested to
Rozie Zangeneh
doaj   +1 more source

Multiscale particle simulation of the temporal evolution of heat flux into poloidal gaps of castellated divertor with edge-localized modes

open access: yesNuclear Fusion, 2023
Edge-localized modes (ELMs) produce an intense transient heat flux on castellated divertor mono-blocks (MBs). The parallel transport of electrons and ions from the ELM burst varies due to their different velocities, which significantly influences the ...
Guo-Jian Niu   +8 more
doaj   +1 more source

Pool Boiling Performance of Multilayer Micromeshes for Commercial High-Power Cooling

open access: yesMicromachines, 2021
With the rapid development of electronics, thermal management has become one of the most crucial issues. Intense research has focused on surface modifications used to enhance heat transfer.
Kairui Tang   +6 more
doaj   +1 more source

Heating of Intense Magnetic Flux Tubes by Magnetohydrodynamic Waves [PDF]

open access: yesSymposium - International Astronomical Union, 1983
Theoretical models of intense magnetic flux tubes embedded in the photospheres of late-type stars have been calculated. Magnetohydrodynamic waves generated in the convective zone are radiatively damped in the lower part of the flux tube and then dissipated.
Z. Musielak, E. Bielicz
openaire   +1 more source

Convective heat transfer mechanisms of molten phase change material in a vertical slender rectangular cavity: A numerical case study

open access: yesCase Studies in Thermal Engineering, 2021
In this paper, the convective heat transfer pattern of molten phase change material (mPCM) in a slender rectangular cavity with constant heat flux boundary condition at one side and flow boundary condition at opposite side is numerically investigated ...
Peiyi Li   +4 more
doaj   +1 more source

Studies on heat transfer characteristics of vapor chamber under periodic-pulsed heat source

open access: yesAdvances in Mechanical Engineering, 2022
In a high-power microwave device, the intense electron beam causes a high-heat-flux on the collector’s inner surface which results in an instant temperature increase which eventually causes the output power to drop.
Tengyue Ma   +6 more
doaj   +1 more source

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