نتایج جستجو برای: thermo physical properties

تعداد نتایج: 1462071  

2011
X. Feng X. Wang X. Chen Y. Yue

In this paper, anatase titanium dioxide (TiO2) thin films 60 lm thick are fabricated using the electrospinning technique. The prepared thin films are composed of interconnected anatase TiO2 nanofibers. The transient electro-thermal technique, combined with a temperature–resistance calibration procedure, provides a full spectrum study which examines the relationship between the film’s thermal di...

Journal: :amirkabir international journal of modeling, identification, simulation & control 2015
a. ghorbanpour arani e. haghparast z. khoddami maraghi s. amir

in this research, static stresses analysis of boron nitride nano - tube reinforced composite (bnntrc) cylinder made of poly - vinylidene fluoride (pvdf) subjected to non - axisymmetric thermo - mechanical loads and applied voltage is developed. the surrounded elastic medium is modelled by pasternak foundation. composite structure is modeled based on piezoelectric fiber reinforced composite (pfr...

Journal: :journal of petroleum science and technology 2013
behruz mirzayi seyed ali mousavi dehghani mohammad behruz chakan

this paper is concerned with asphaltene deposition in fluid flowing through pipelines. brownian diffusion and drag, gravitational, thermophoresis, buoyancy, and shear removal are considered as possible mechanisms in the asphaltene deposition process. the thermo-physical properties of the fluid were obtained from iranian oil fields. a model was used in the pipeline deposition modeling to predict...

Journal: :iranian journal of mechanical engineering transactions of the isme 2013
s. gh. moshir stekhareh a. r. mostofizadeh n. fouladi a. soleyman

an internal ballistics model has been developed for performance prediction of a solid propellant rocket motor. inthis model a 1-d unsteady euler equation with source terms is considered. the flow is assumed as a non-reacting mixture of perfect gases with space and time varying thermo physical properties. the governing equations in the combustion chamber are solved numerically by using the stege...

2015
Bertrand Girardin Gaëlle Fontaine Sophie Duquesne Michael Försth Serge Bourbigot

The pyrolysis of solid polymeric materials is a complex process that involves both chemical and physical phenomena such as phase transitions, chemical reactions, heat transfer, and mass transport of gaseous components. For modeling purposes, it is important to characterize and to quantify the properties driving those phenomena, especially in the case of flame-retarded materials. In this study, ...

Journal: :Turkish journal of geosciences 2022

The thermal and physical properties of rock units from Ikogosi Warm Spring (IKGWS) in the Southwestern part Nigeria were examined order to characterize explore its geothermal prospect provide an insight into different rocks study area. A total 40 samples made up granite, quartzite gneiss series collected outcrops area analyzed for Thermal conductivity (TC), Radiogenic heat production (RHP), Hea...

Journal: :Renewable & Sustainable Energy Reviews 2021

Nanostructured magnetic suspensions have superior thermophysical properties, which attracted widespread attention owing to their industrial applications for heat transfer enhancement and thermal management. However, experimental measurements of the properties magnetic-based nanofluids, especially under an external field, are significantly complicated, expensive, time consuming. Currently, metho...

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