Results 11 to 20 of about 6,130,130 (256)

Study on a single, straight-tube pulsating heat pipe with an open end (Function and role of the liquid film surrounding vapor plug)

open access: yesNihon Kikai Gakkai ronbunshu, 2021
A single, straight-tube pulsating heat pipe (SST-PHP) with an open end that was proposed by the authors’ research group provides a high heat transport rate of 75 W with an effective thermal conductivity of 40 kW/(m・K) due to a self-excited, large ...
Kunito OKUYAMA   +2 more
doaj   +1 more source

Numerical analysis of the NiTi solidification process influence of thermal conductivity [PDF]

open access: yesScience of Sintering, 2017
The present study deals with the numerical analysis of the solidification process of a NiTi binary alloy. The physical medium is taken as an incompressible fluid where the heat is transferred by conduction and convection, including the thermal ...
Ternik Primož   +2 more
doaj   +1 more source

Complex Observation in Electron Microscopy VIII: Novel Hilbert Phase-plates to Maximize Phase-contrast Sensitivity [PDF]

open access: yes, 2022
Phase-plate transmission electron microscopy has recently regressed since a report that Volta phase-plate phase-contrast is less sensitive than non-phase-plate phase contrast, which leads to conventional defocusing phase-contrast. What about Hilbert phase-plate phase-contrast? We report that the Hilbert phase-plate method can survive if two experiments
arxiv   +1 more source

Characterizing the Change of Annual Cone Production in Longleaf Pine Forests

open access: yesSeeds, 2023
Sporadic cone (or seed) production challenges longleaf pine forest restoration. Characterizing annual cone production change from long-term monitored data provides functional information on the foundational species of this imperiled ecosystem.
Xiongwen Chen, John L. Willis
doaj   +1 more source

Online Multiscale Finite Element Simulation of Thermo-Mechanical Model with Phase Change

open access: yesComputation, 2023
This paper presents a thermo-mechanical model with phase transition considering changes in the mechanical properties of the medium. The proposed thermo-mechanical model is described by a system of partial differential equations for temperature and ...
Dmitry Ammosov, Maria Vasilyeva
doaj   +1 more source

Toward the Detection of Permafrost Using Land-Surface Temperature Mapping

open access: yesRemote Sensing, 2020
Permafrost is degrading under current warming conditions, disrupting infrastructure, releasing carbon from soils, and altering seasonal water availability. Therefore, it is important to quantitatively map the change in the extent and depth of permafrost.
Jigjidsurengiin Batbaatar   +7 more
doaj   +1 more source

A Review of the Complex Flow and Heat Transfer Characteristics in Microchannels

open access: yesMicromachines, 2023
Continuously improving heat transfer efficiency is one of the important goals in the field of energy. Compact heat exchangers characterized by microscale flow and heat transfer have successfully provided solutions for this purpose.
Junqiang Zhang, Zhengping Zou, Chao Fu
doaj   +1 more source

Tunability of the Optical Properties of Transition-Metal-Based Structural Phase Change Materials

open access: yesOptics, 2023
Phase transitions are an intriguing yet poorly understood aspect of transition-metal-based materials; these phase transitions can result in changes to the refractive index, absorption coefficient, and other optical properties of the materials. Transition-
Sheheera Irfan   +5 more
doaj   +1 more source

Thermal characteristics of Li‐ion battery based on phase change material‐aluminum plate‐fin composite heat dissipation

open access: yesEnergy Science & Engineering, 2023
A reliable battery thermal management system (BTMS) not only can effectively decrease the maximum temperature but also maintain the temperature uniformity of the lithium‐ion (Li‐ion) battery after grouping.
Feifei Liu   +4 more
doaj   +1 more source

A Vaporization Model for Continuous Surface Force Approaches and Subcooled Configurations

open access: yesFluids, 2023
The integration of phase change phenomena through an interface is a numerical challenge that requires proper attention. Solutions to properly ensure mass and energy conservation were developed for finite difference and finite volume methods, but not for ...
Charles Brissot   +3 more
doaj   +1 more source

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