Πλοήγηση ανά Θέμα "Heat transfer"
Αποτελέσματα 1-20 από 22
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Buoyancy-assisted mixed convection in a vertical channel with spatially periodic wall temperature
(2013)The influence of a spatially periodic temperature boundary condition on the laminar mixed convection in an upward flow between two vertical parallel plates is numerically studied. A detailed assessment is presented of the ... -
Conductive heat transfer in rarefied binary gas mixtures confined between parallel plates based on kinetic modeling
(2018)The kinetic model introduced by Kosuge (2009) is implemented to solve heat transfer through rarefied binary gas mixtures confined between two parallel plates maintained at different temperatures. The results have been found ... -
Conductive heat transfer in rarefied polyatomic gases confined between parallel plates via various kinetic models and the DSMC method
(2015)The conductive heat transfer through rarefied polyatomic gases confined between parallel plates maintained at different temperatures is investigated. The approach is based on three kinetic models namely the Holway, Rykov ... -
Couette flow with heat transfer in the whole range of the Knudsen number
(2008)The steady-state one-dimensional flow of a gas between two parallel plates moving with relative velocity and maintained at different temperatures is examined on the basis of the non-linear Bhatnagar-Gross-Krook (BGK) model ... -
Effect of magnetic field on near-wall coherent structures and heat transfer in magnetohydrodynamic turbulent channel flow of low Prandtl number fluids
(2011)A numerical study is carried out of the magnetic field effects on the coherent structures and the associated heat transfer in a turbulent channel flow with constant temperature at the bottom (cold) and top (hot) walls. ... -
Effect of vibrational degrees of freedom on the heat transfer in polyatomic gases confined between parallel plates
(2016)Conductive stationary heat transfer through rarefied nonpolar polyatomic gases, confined between parallel plates maintained at different temperatures, is investigated. It is assumed that gas molecules possess both rotational ... -
Experimental analysis of heat transfer between a heated wire and a rarefied gas in an annular gap with high diameter ratio
(2012)In this paper a first experimental attempt is performed to measure heat conduction through rarefied air at rest contained between two concentric cylinders. The heat transfer between a heated platinum wire having a diameter ... -
Film Boiling Conjugate Heat Transfer during Immersion Quenching
(2022)Boiling conjugate heat transfer is an active field of research encountered in several industries, including metallurgy, power generation and electronics. This paper presents a computational fluid dynamics approach capable ... -
Gas flow and heat transfer simulation in MEMS via a mesoscopic approach
(2004)The flow problem of binary gaseous mixtures in rectangular micro channels due to small pressure, temperature and molar concentration gradients over the whole range of the Kn number is solved. The solution is based on a ... -
Gas flow towards an adsorbing planar wall subject to partial gas-surface thermal accommodation
(2016)The steady half-space single gas flow driven by an adsorbing planar wall is investigated based on the solution of the BGK kinetic model. The mass and heat transfer between the gas and the plate are characterized by the ... -
The influence of heat transfer effects on turbine performance characteristics
(2006)A method allowing the evaluation of the effects related to heat transfer to the turbine blades on its performance characteristics is presented. The effects investigated are the change of passage dimensions, resulting from ... -
Investigation of transient heat transfer in multi-scale PCM composites using a semi-analytical model
(2021)This paper presents a semi-analytical model to describe the transient heat transfer in phase change material (PCM)-based composites. One such example is micro-encapsulated paraffin in gypsum plaster walls for building ... -
MHD liquid metal flow and heat transfer between vertical coaxial cylinders under horizontal magnetic field
(2017)Direct numerical simulations are presented of MHD liquid metal flow and heat transfer in vertical annuli. Three annular gaps and four ratios of annular height to annular gap are considered. The walls of the external and ... -
Modeling of hydrocarbon trap systems
(2000)Hydrocarbon traps for gasoline engines are promising candidates for cold start emission control, provided that their design is based on a "systems approach". In this paper, an existing CAE methodology for exhaust after-treatment ... -
Nonequilibrium Gas Flow and Heat Transfer in a Heated Square Microcavity
(2016)The flow of a rarefied gas in a square enclosure with one wall at high temperature and the other three walls at the same low temperature is investigated. The flow, characterized by the reference Knudsen number and ratio ... -
Nonlinear oscillatory fully-developed rarefied gas flow in plane geometry
(2019)The nonlinear oscillatory fully developed rarefied gas flow between parallel plates due to an external harmonic force is investigated by the Direct Simulation Monte Carlo (DSMC) method in terms of the parameters characterizing ... -
A Numerical Study of Developing Buoyancy-Assisted Mixed Convection with Spatially Periodic Wall Heating
(2017)The validity of a parabolic model for simulating the developing buoyancy-assisted mixed convection flow in a vertical channel with spatially periodic wall temperature is verified by a full elliptic model of the momentum ... -
Numerical study on thermal buckling of empty thin-walled steel tanks under multiple pool-fire scenarios
(2018)Fire incidents at fuel storage tank farms are high risk incidents due to the fact that can result in severe socio-economic losses, injuries, deaths and have a serious environmental impact. In the case of a tank fire, there ... -
On the effect of the boundary conditions and the collision model on rarefied gas flows
(2011)In this work, the effect of the gas-surface interaction law and of the intermolecular collision model is examined by solving, using the DSMC method, the heat transfer problem between parallel plates and the non-isothermal ... -
Recuperators investigation for high temperature supercritical carbon dioxide power generation cycles
(2017)Supercritical carbon dioxide (s-CO2) Brayton cycles are a promising technology for the next generation power conversion cycles, attaining equivalent or higher cycle efficiency compared to conventional power cycles at similar ...