1-20 of 280
Keywords: thermal conductivity
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles
Article Type: Research-Article
J. Heat Transfer. July 2022, 144(7): 071401.
Paper No: HT-21-1638
Published Online: May 11, 2022
... is less than other errors involved in the measurement of the MTPS sensor, and thus deemed insignificant. Therefore, we conclude that the thermal resistance in the MTPS theoretical model represents the insulation layer to a good approximation when the sample has higher thermal conductivity than...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. February 2022, 144(2): 021602.
Paper No: HT-21-1402
Published Online: December 21, 2021
... at the bottom of the pipe. The mean flow velocity and the heat transfer coefficient decrease along the condensation length. The local results demonstrate that the heat transfer coefficient is not merely affected by the condensate film thickness but also by the effective thermal conductivity of the flow...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J. Heat Transfer. February 2022, 144(2): 023501.
Paper No: HT-21-1088
Published Online: December 20, 2021
...Xiaojian Wang; Liangbi Wang The most common nongranular fillers are sheet and fiber. When they are distributed along the heat flux direction, the thermal conductivity of the composite increases greatly. Meanwhile, the filler contact also has a large effect on the thermal conductivity. However...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. January 2022, 144(1): 013501.
Paper No: HT-20-1525
Published Online: November 8, 2021
... of the thermal conductivity are sensitive to both the pump and probe laser spot sizes, while analytical solutions (based on Hankel transform) cannot isolate the two effects. However, for the same effective (combined) spot size, the two solutions are found to be in excellent agreement. If the substrate...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. July 2021, 143(7): 072102.
Paper No: HT-20-1504
Published Online: May 17, 2021
... of the composite. This value has the meaning of “dynamic effective thermal diffusivity.” Afterward, the effective thermal conductivity ( λ eff ) is calculated from the dynamic effective thermal diffusivity, equivalent heat capacity, and density of the composite. The results of this methodology are compared...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J. Heat Transfer. April 2021, 143(4): 042102.
Paper No: HT-20-1479
Published Online: February 23, 2021
.... The solutions of governing equations show that the transfer of heat in a porous rod is not only due to the conduction but also produced by the local particle displacement phenomenon. It is observed that the time-averaged transfer of heat depends on the circular frequency, porosity, thermal conductivity, thermal...
Includes: Supplementary data
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. March 2021, 143(3): 034502.
Paper No: HT-20-1367
Published Online: January 28, 2021
... by a thermal conductivity that can reach lower values than any other material. Our aim was to explain the causes of the super-insulation of this material with the use of a calculating method of conductive heat transfer flux in an aerogel structure and determine the equivalent thermal conductivity...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. September 2020, 142(9): 094502.
Paper No: HT-20-1199
Published Online: July 8, 2020
... strategy has been established to control the anisotropy of its effective thermal conductivity tensor by deforming the structure according to its specific heat transfer application. The solution surface of flat triangle was constructed in the space with three coordinate axes being the principal components...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. March 2020, 142(3): 032503.
Paper No: HT-19-1645
Published Online: January 29, 2020
...Mohammad Bagheri Motlagh; Mohammad Kalteh In this paper, molecular dynamics simulation is used to investigate the effect of copper and argon nanochannels size on the thermal conductivity of argon. Thermal conductivity is calculated by nonequilibrium molecular dynamics (NEMD) simulation. Simulations...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. December 2019, 141(12): 121401.
Paper No: HT-19-1412
Published Online: October 8, 2019
...:  avr.emanuel@gmail.com 14 07 2019 27 08 2019 00 00 0000 08 10 2019 circular heat source CHS composite Hankel Laplace thermal conductivity thermal diffusivity The problem of a three-dimensional (3D) heat flow from a finite circular heat source (CHS) has been...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. April 2019, 141(4): 044501.
Paper No: HT-18-1399
Published Online: February 25, 2019
...C. G. Subramaniam A generalized effective medium theory (EMT) is proposed to account for the fractal structure of the dispersed phase in a dispersing medium under the dilute limit. The thermal conductivity of nanofluids with fractal aggregates is studied using the proposed model. Fractal aggregates...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. March 2019, 141(3): 032401.
Paper No: HT-17-1735
Published Online: January 14, 2019
...Hamid Loulijat; Hicham Zerradi In this work, the equilibrium molecular dynamics (MD) simulation combined with the Green–Kubo method is employed to calculate the thermal conductivity and investigate the impact of the liquid layer around the solid nanoparticle (NP) in enhancing thermal conductivity...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. February 2019, 141(2): 024504.
Paper No: HT-18-1673
Published Online: December 13, 2018
...X. Bai; A. Nakayama An analytical and numerical study was conducted for estimation of the effective thermal conductivities of curved metal frame core structures, which can replace metal foams, in views of their advantages over the metal foams for both load bearing and heat dissipation...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. October 2015, 137(10): 101601.
Paper No: HT-14-1118
Published Online: October 1, 2015
... 02 06 2015 This paper reports on a new application of the thermal probe in nonlinear systems. Whereas the thermal probe has been originally developed to determine the thermal conductivity in linear cases (where the thermophysical properties are considered independent of the temperature...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. August 2015, 137(8): 081601.
Paper No: HT-13-1325
Published Online: August 1, 2015
... hot-wire method. The granule thermal conductivity was measured by filling a container that had the hot-wire suspended in the middle with the granules and then compressing the granules around the wire to reduce any contact resistance between the wire and granules as well as to make the volume ratio...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. July 2015, 137(7): 072301.
Paper No: HT-13-1601
Published Online: March 24, 2015
... constitutional supercooling convection freezing nanoparticles nanostructures phase change solidification suspensions thermal conductivity Solidification of multicomponent mixtures is accompanied with rejection of the solute, which is heavier or lighter than the solvent. This process creates...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. March 2015, 137(3): 034501.
Paper No: HT-13-1360
Published Online: March 1, 2015
...Iman Eslami Afrooz; Andreas Öchsner Over the past decades, many techniques have been developed and employed to enhance the thermal conductivity of polymer composites [ 1 , 2 ]. As an example, the thermal conductivity of polymers can be increased by reinforcing them with fillers with high thermal...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. January 2015, 137(1): 012401.
Paper No: HT-13-1642
Published Online: November 5, 2014
... of carbon nanotube (CNT) waviness on the effective thermal conductivities of a novel fuzzy fiber-reinforced composite (FFRC). The distinctive feature of the construction of this novel FFRC is that wavy CNTs are radially grown on the circumferential surfaces of the carbon fibers. Effective thermal...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. June 2014, 136(6): 061301.
Paper No: HT-13-1291
Published Online: March 10, 2014
... measurements. The measurements of K were made using the three-omega (3 ω ) [ 14 , 15 , 22 , 23 ] and the TTR [ 24–26 ] methods. In particular, thermal conductivity across the thickness of the films, K y was determined by the 3 ω and TTR methods. The anisotropy factor K x / K y , which...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. March 2014, 136(3): 031303.
Paper No: HT-13-1116
Published Online: November 28, 2013
.... Assoc. Editor: Oronzio Manca. 06 03 2013 05 08 2013 The thermal conductivity of the earth materials conditions their ability as thermal isolator and its heating capacity, which has a direct impact on the energy consumption of the buildings built with these materials. Two original...