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Keywords: thermal conductivity
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Proceedings Papers

Proc. ASME. HT2021, ASME 2021 Heat Transfer Summer Conference, V001T09A004, June 16–18, 2021
Paper No: HT2021-62825
...Abstract Abstract Superlattices with suppressed thermal conductivity are of great significance in the field of thermoelectricity and can improve the thermoelectric conversion efficiency of materials. Due to Anderson localization of coherent phonons, aperiodic superlattices have lower thermal...
Proceedings Papers

Proc. ASME. HT2020, ASME 2020 Heat Transfer Summer Conference, V001T15A003, July 13–15, 2020
Paper No: HT2020-9034
... a dominant effect on the thermal conductivity of the nanofluids. Comparing the turbidity of the nanofluids to the zeta potential, it is observed that the turbidity measurement gives first-hand information about the stability of nanofluids and can act as an index for stability. But still, more exploration...
Proceedings Papers

Proc. ASME. HT2013, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer, V001T02A002, July 14–19, 2013
Paper No: HT2013-17334
... CMK-3 is a typical of carbon rods which are arranged in relatively regular two-dimensional hexagonal array. In our study, the effective thermal conductivity of CMK-3 composite is investigated. For the thermal conductivity of carbon rods, the equilibrium molecular dynamics (EMD) is performed...
Proceedings Papers

Proc. ASME. HT2013, Volume 4: Heat and Mass Transfer Under Extreme Conditions; Environmental Heat Transfer; Computational Heat Transfer; Visualization of Heat Transfer; Heat Transfer Education and Future Directions in Heat Transfer; Nuclear Energy, V004T14A020, July 14–19, 2013
Paper No: HT2013-17589
... Thermal Conductivity Carbon Nano-peapods Molecular Dynamic Simulation The thermal conductivity of carbon nano-peapods, carbon nanotube (10,10) filled with fullerene molecules, is investigated by Equilibrium Molecular Dynamic Simulation based on Green-Kubo’s equation. Carbon nano-peapods...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 503-508, July 19–23, 2009
Paper No: HT2009-88421
... aluminum TFPHP of 260×60×4 mm 3 size is made and the test setup is established. The test results show that the spreader has good performance as, at the horizontal state, the power transferred can reach 18.5W, the corresponding thermal conductivity is 838W/(m·°C). For different tilt angle, we have...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 235-240, July 19–23, 2009
Paper No: HT2009-88330
... Using the time–resolved thermoreflectance technique, the thermal conductivity of CoFe films are measured with various thicknesses and the results show a thickness-dependent thermal conductivity. In order to overcome the obstacle for the high thermal conductivity metal film measurement, a thermal...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 249-260, July 19–23, 2009
Paper No: HT2009-88246
.... 23 02 2010 hydrogen storage systems complex metal hydrides sodium alanates reactive porous media thermal conductivity permeability chemical kinetics refueling 1 Copyright © 2009 by ASME Proceedings of HT2009 2009 ASME Summer Heat Transfer Conference July 19-23, 2009, San Francisco...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 543-547, July 19–23, 2009
Paper No: HT2009-88618
... resolution of this technique was demonstrated by obtaining the thermal conductivity profile of samples in which a thin silicon oxide layer is sandwiched between single crystal silicon layers. For a sample with 1.4 μm thick silicon oxide layer, its thermal conductivity was quantitatively profiled. However...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 481-489, July 19–23, 2009
Paper No: HT2009-88114
... This paper presented the effects of finite dimensions of the sample and non-zero heat capacity of the strip on thermal conductivity determination with the transient hot-strip (THS) method. Through numerical analysis of temperature field within the system composed of the samples and the strip...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 3, 137-144, July 17–22, 2005
Paper No: HT2005-72356
... Models are presented for the determination of thermal conductivity of a composite lamina with woven fiber mats. In analyzing the cure cycle of a composite part, the common practice has been to use weight-averaged thermal properties. The limitation of this approach becomes apparent when one finds...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 1, 7-12, July 17–22, 2005
Paper No: HT2005-72192
... Based on the open-cell nano-porous structure features, a cubic array of nano-spheres unit cell model describing the coupled conduction of gas and solid in aerogel super insulator is developed. By one-dimensional heat conduction analysis in the unit cell, the effective thermal conductivity...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 2, 357-369, July 17–22, 2005
Paper No: HT2005-72029
.... The porous material used in this research was intended to minimize the insulating effect of this thermal resistance layer. In the freezing case study, a one-dimensional mathematical model was developed, which considered heat conduction as the only mode of heat transfer. The effective thermal conductivity...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 4, 811-819, July 17–22, 2005
Paper No: HT2005-72434
... The thermal conductivity of silicon thin films is predicted in the directions parallel and perpendicular to the film surfaces (in-plane and out-of-plane, respectively) using equilibrium molecular dynamics, the Green-Kubo relationship and the Stillinger-Weber interatomic potential. Film...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 4, 895-901, July 17–22, 2005
Paper No: HT2005-72198
... Core-shell heterostructures could potentially become the building blocks of nanotechnology for electronic and optoelectronic applications. The increased surface or interface area will decrease the thermal conductivity of such nanostructures and impose challenges for the thermal management...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 4, 821-827, July 17–22, 2005
Paper No: HT2005-72540
... This work presents the in-plane thermal conductivity data for pure as well as boron (1.6 × 10 21 /cm 3 ), arsenic (2.3 × 10 20 /cm 3 ) and phosphorus (2.3 × 10 20 /cm 3 ) doped silicon layers of thickness 30 and 50 nm at high temperature. The steady-state Joule heating and electrical...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 1, 777-785, July 17–22, 2005
Paper No: HT2005-72020
.... The theory can be applied for samples with different absorption coefficient to obtain simultaneously thermal diffusivity and thermal conductivity of the sample. The original theory of the laser flash method becomes a limiting case of the current theory with an infinitely large absorption coefficient...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 4, 449-456, July 11–15, 2004
Paper No: HT-FED2004-56460
... In this paper, we study theoretically the phonon thermal conductivity of nanocomposites with nanowires embedded in a host semiconductor material using the phonon Boltzmann equation. Special attention is paid for using periodic boundary conditions. The simulation shows that the temperature...
Proceedings Papers

Proc. ASME. HT2003, Heat Transfer: Volume 1, 833-839, July 21–23, 2003
Paper No: HT2003-47448
... This study further develops the standard laser flash method for the measurement of multiple thermal properties of semiconductor melts. The standard laser flash method is widely used to measure thermal diffusivity of solids. Our modified procedure allows thermal diffusivity, thermal conductivity...