...S. Corasaniti; P. Coppa; M. Potenza; G. Bovesecchi Four probes for measuring thermal conductivity, thermal diffusivity, and convection heat transfer coefficient were designed, built, and tested. In two of these probes (SP-1 and SP-2), three thermocouples were placed at 25%, 50%, and 75...

..., a decrease in the current density from 60 nA to 3 nA, and a decrease of thermal conductivity from 1.8 W m −1 K −1 to 0.12 W m −1 K −1 . These results introduce the Ce-doped Ba 2 TiMoO 6 perovskite as a potential candidate for a new generation of thermal barrier coatings (TBCs). 1 Corresponding author...

.... In this section, some existing theoretical models for the estimation of thermal conductivity of particle suspensions and nanofluids are discussed. in which u qr and b qr represent, respectively, the neuron q th output from r th layer and bias weight for q th neuron in layer r...

... 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...

... 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...

...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...

... 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...

... 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...

.... 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...

... 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...

... 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...

...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...

...-mail:  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...

...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...

...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...

...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...

... 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...

... 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...

... 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...

...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...