نتایج جستجو برای: Thermal Transport

تعداد نتایج: 481817  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
reza khordad bahare mirhosseini

in the present work, the integral equations method is used to calculate transport properties of polar fluids. for this goal, we use the stockmayer potential and examine theoretically the thermal conductivity of several refrigerant mixtures such as r125+r134a, r125+r32, r125+r152a, r134a+r32, r152a+r32, r134a+r143a, and r125+r143a. we solve numerically the ornstein-zernike (oz) equation using th...

Bahare Mirhosseini Reza Khordad,

In the present work, the integral equations method is used to calculate transport properties of polar fluids. For this goal, we use the Stockmayer potential and examine theoretically the thermal conductivity of several refrigerant mixtures such as R125+R134a, R125+R32, R125+R152a, R134a+R32, R152a+R32, R134a+R143a, and R125+R143a. We solve numerically the Ornstein-Zernike (OZ) equation usin...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده فنی و مهندسی 1391

در این پایان نامه ابتدا مروری جامع بر مطالعات انجام شده در زمینه تولیدگاز هیدروژن از متان، احتراق گازهای شامل هیدروژن و احتراق با تکنولوژی hitac صورت گرفته است و ویژگیها و کاربردهای روش های مختلف تولید هیدروژن و همچنین احتراق hitac به تفصیل مورد بررسی قرار گرفته است. سپس مدلهای مختلف احتراق، انتقال حرارت تشعشعی و روش های مختلف تولید nox مورد مطالعه قرار گرفت. به منظور بررسی تولید هیدروژن از متا...

Journal: :Journal of Applied Physics 2003

2016
Navaneetha K. Ravichandran Austin J. Minnich

Phonon boundary scattering is typically treated using the Fuchs-Sondheimer theory, which assumes that phonons are thermalized to the local temperature at the boundary. However, whether such a thermalization process actually occurs and its effect on thermal transport remains unclear. Here we examine thermal transport along thin films with both thermalizing and nonthermalizing walls by solving th...

2014
Yan Wang Ajit K. Vallabhaneni Bo Qiu Xiulin Ruan

This article reviews recent numerical studies of thermal transport in graphene, with a focus on molecular dynamics simulation, the atomistic Green’s function method, and the phonon Boltzmann transport equation method. The mode-wise phonon contribution to the intrinsic thermal conductivity (κ) of graphene and the effects of extrinsic mechanisms—for example, substrate, isotope, impurities, and de...

Journal: :Nature materials 2015
Jungwan Cho Kenneth E Goodson

2016
Zaoli Xu

Thermal transport in DNA is systematically studied to facilitate the development of DNA-based nanoelectronics in thermal management aspect. Synthesis of crystalline DNAcomposited microfiber and microfilm, DNA nanofiber and DNA nanofiber array are developed in sequence to enable the thermal transport study in them. Thermo-physical properties, including thermal conductivity, thermal diffusivity, ...

2005
Jeffrey A. Eastman David G. Cahill

challenges facing many diverse industries, including microelectronics, transportation, solid-state lighting, and manufacturing. Technological developments such as microelectronic devices with smaller (sub-100 nm) features and faster (multi-gigahertz) operating speeds, higher-power engines, and brighter optical devices are driving increased thermal loads, requiring advances in cooling. The conve...

2012
Mir Mohammad Sadeghi Michael Thompson Pettes Li Shi

of phonon transport in graphene is discussed along with associated experimental and theoretical investigation techniques. Several theories and experiments have suggested that the absence of interlayer phonon scattering in suspended monolayer graphene can result in higher intrinsic basal plane thermal conductivity than that for graphite. However, accurate experimental thermal conductivity data o...

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