نتایج جستجو برای: thermal conductivity

تعداد نتایج: 252520  

 This work presents a model for calculating the effective ‎thermal conductivity of nanofluids. The proposed model ‎includes the effects of nanoparticles and thermal conductivity ‎base fluid.We will focus on experimental of the volume ‎concentration parameter and temperature on thermal ‎conductivity, nano-fluid combination and Multi-Walled ‎Carbon nanotubes-Oxide / Copper-paid deionized Water. T...

2015
Ashutosh Giri Patrick E. Hopkins James G. Wessel John C. Duda

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Luca Delfini Stefano Lepri Roberto Livi Antonio Politi

In the present Rapid Communication we present an analytical and numerical solution of the self-consistent mode-coupling equations for the problem of heat conductivity in one-dimensional systems. Such a solution leads us to propose a different scenario to accommodate the known results obtained so far for this problem. More precisely, we conjecture that the universality class is determined by the...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
طاهره غفاری t ghafari dept. of prosthodontics, dental school, tabriz university of medical sciences, tabriz- iran.گروه پروتزهای دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی تبریز فهیمه حامدی راد f. hamedi rad dept. of prosthodontics, dental school, tabriz university of medical sciences, tabriz- iran.گروه پروتزهای دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی تبریز بهارک عزتی b. ezzati dept. of prosthodontics, dental school, tabriz university of medical sciences, tabriz- iran.گروه پروتزهای دندانی، دانشکده دندانپزشکی، دانشگاه علوم پزشکی تبریز

objective: studies have demonstrates that physical properties of denture base affect patient satisfaction and acceptance. thermal conductivity is among the most important properties of denture base influencing the sense of taste and gingival health. the conventionally used acrylic resin has a low coefficient of thermal conductivity. this study aimed to improve the thermal conductivity of acryli...

Journal: :journal of agricultural science and technology 2012
a. sadeghi

application of feed pellets in animal and aquatic farming industries has grown because of both the physical and the nutritional benefits it provides. development of feed pellets manufacturing industry is also considerable. steam conditioning process, which plays an important role in pelleting production, includes heating feed particles, adding moisture, and mixing the mash. pellets cooling and ...

2013
Fivos Drymiotis Tristan W. Day David R. Brown Nicholas A. Heinz Jeffrey Snyder

2013
Huaizhou Zhao Mani Pokharel Gaohua Zhu Shuo Chen Kevin Lukas Qing Jie Cyril Opeil Gang Chen Zhifeng Ren

Journal: :Physical review letters 2006
Giada Basile Cédric Bernardin Stefano Olla

Anomalous large thermal conductivity has been observed numerically and experimentally in one- and two-dimensional systems. There is an open debate about the role of conservation of momentum. We introduce a model whose thermal conductivity diverges in dimensions 1 and 2 if momentum is conserved, while it remains finite in dimension d > or = 3. We consider a system of harmonic oscillators perturb...

Journal: :international journal of nanoscience and nanotechnology 2013
m. tajik jamal-abadi a. h. zamzamian

common heat transfer fluids such as water, ethylene glycol, and engine oil have limited heat transfer capabilities due to their low heat transfer properties. nanofluids are suspensions of nanoparticles in base fluids, a new challenge for thermal sciences provided by nanotechnology. in this study, we are to optimize and report the effects of various parameters such as the ratio of the thermal co...

Journal: :transport phenomena in nano and micro scales 2014
s. akbarzadeh m. farhadi k. sedighi m. ebrahimi

in this paper, the measurement of the viscosity of zno in ethylene glycol, propylene glycol, mixture of ethylene glycol and water (60:40 by weight), and a mixture of propylene glycol and water (60:40 by weight) and the thermal conductivity in ethylene glycol and propylene glycol as base fluids in the range of temperature from 25 ºc to 60 ºc are investigated. the results indicate that as the tem...

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