Browsing by Subject "SIMULATION"
Now showing items 120 of 49

3D Features in the Calendering of Thermoplastics: A Computational Investigation
(2014)We present results of a fully threedimensional computational study of the calendering process of thermoplastics using the fluid dynamics software OpenFOAM. Our aim is to elucidate unique 3D features of the process, such ... 
Behavior of a seismically isolated bridge crossing a fault rupture zone
(2014)The effect of the fault rupture zone traversing a seismically isolated bridge is investigated utilizing a finite element model of a section of the Bolu Viaduct and a set of synthetic broadband strong ground motions simulated ... 
CARROT  A tool for fast and accurate soft error rate estimation
(2006)We present a soft error rate (SER) analysis methodology within a simulation and design environment that covers a broad spectrum of design problems and parameters. Our approach includes modeling of the particle hit at the ... 
Component mode synthesis techniques for finite element model updating
(2013)Deterministic and Bayesian finite element (FE) model updating techniques are computationally very demanding operations due to the large number of FE model reanalyses required. Component mode synthesis techniques are ... 
Computational fluid dynamics applications to improve crop production systems
(2013)Computational fluid dynamics (CFD), numerical analysis and simulation tools of fluid flow processes have emerged from the development stage and become nowadays a robust design tool. It is widely used to study various ... 
Computational phlebology: reviewing computer models of the venous system
(2013)Relatively little attention has been paid to the venous system and valves from a cardiovascular engineering perspective up to now. Given the involvement of venous valve haemodynamics in the development of deep vein thrombosis ... 
A computational study of austenite formation kinetics in rapidly heated steels
(2007)Surface hardening of steels involves rapid austenitization and subsequent quenching of the surface. The resulting extent of hardening largely depends on the rate of austenitization of the surface under the applied high ... 
Context dependency of comfort and energy performance in mixedmode offices
(2011)This article investigates the context dependency of comfort and energy performance in mixedmode offices in the climate of Athens, Greece. It is based on a parametric study using the simulation software EnergyPlus. Context ... 
Design of steadystate isothermal gas distribution systems consisting of long tubes in the whole range of the Knudsen number
(2011)A novel algorithm is developed to solve steadystate isothermal vacuum gas dynamics flows through pipe networks consisting of long tubes based on linear kinetic theory. For a pipe network of known geometry the algorithm ... 
The driven cavity flow over the whole range of the Knudsen number
(2005)The flow of a rarefied gas in a rectangular enclosure due to the motion of the upper wall is solved over the whole range of the Knudsen number. The formulation is based on the twodimensional linearized BhatnagarGrossKrook ... 
Effect of magnetic field on nearwall 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. ... 
Energy analysis of an improved concept of integrated PV panels in an office building in central Greece
(2011)During the last decade, steel constructions with glazed facades became popular for commercial buildings in Greece. Moreover, expensive metal, natural stone, marble, ceramic, granite as well as special glass is employed for ... 
Ethanol crossover and direct ethanol PEM fuel cell performance modeling and experimental validation
(2006)In the present work, a onedimension, steadystate and single phase model is developed with the purpose of describing the mass transport within a PtRu/Nafion (R)115/Pt membraneelectrode assembly and the performance of a ... 
Exergy Analysis of an Intermediate Temperature Solid Oxide Fuel CellGas Turbine Hybrid System Fed with Ethanol
(2012)In the present work, an ethanol fed Solid Oxide Fuel CellGas Turbine ( SOFCGT) system has been parametrically analyzed in terms of exergy and compared with a single SOFC system. The solid oxide fuel cell was fed with ... 
Experimental validation of an improved concept of building integrated photovoltaic panels
(2011)Recent progress in the implementation of the Energy Performance of Buildings Directive resulted in a significant increase of rooftop PV installations in European buildings. In certain cases the PV installation is extended ... 
Farm management information systems: Current situation and future perspectives
(2015)Farm Management Information Systems (FMIS) in agriculture have evolved from simple farm recordkeeping into sophisticated and complex systems to support production management. The purpose of current FMIS is to meet the ... 
Full and part load exergetic analysis of a hybrid micro gas turbine fuel cell system based on existing components
(2012)The paper deals with the examination of a hybrid system consisting of a precommercially available high temperature solid oxide fuel cell and an existing recuperated microturbine. The irreversibilities and thermodynamic ... 
A genetic algorithm solution to the design of slattype shading system
(2006)This article presents a technique for the design of slattype blinds based on the their relative light intensity distribution under a uniform light source. The technique offers a new approach using a genetic algorithm in ... 
Guided ultrasound wave propagation in intact and healing long bones
(2006)Ultrasonic evaluation of bone fracture healing has been traditionally based on the measurement of the propagation velocity of the first arriving signal (FAS). However, the FAS in general corresponds to a lateral wave that ... 
Hybrid modeling of timedependent rarefied gas expansion
(2014)The time evolution of the flow parameters in a system where gas is expanded from a high pressure chamber through a tube toward a low pressure chamber is investigated. During the process, the pressure in the two chambers ...