Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Title
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Article
KrF pulsed laser deposition of La5Ca9Cu24O41 thin films on various substrates
(2009)Recent studies on single crystals of cuprate oxides containing spin chains and ladders have reported large anisotropic magnonmediated thermal conductivity. A potential use of thin films of such materials could be in the ...

Article
KSb5S8: A wide bandgap phasechange material for ultra high density rewritable information storage
(2003)The reversible glassformation and glass crystallization properties of KSb3S8 was described. On the basis of glass transition and crystallization kinetics of KSb5S8, it was found that the crystallization rate and assoicated ...

Article
La0.95Sr0.05Coo3: An efficient roomtemperature thermoelectric oxide
(2004)Electric resistivity, thermal conductivity, and the thermopower of polycrystalline Srdoped LaCoO3 with composition La 0.9Sr0.5CoO3 were measured. The crystal structure of the synthesized powders was determined by xray ...

Article
Lagrangian particle dispersion in turbulent flow over a wall mounted obstacle
(2009)Largeeddy simulations (LES) of particleladen turbulent flows are presented in order to investigate the effects of particle response time on the dispersion patterns of a space developing flow with an obstruction, where ...

Article
Laminar free convection in a square enclosure driven by the Lorentz force
(2010)A numerical study is presented of laminar free convection flow driven by magnetic forces. An external magnetic field with one spatially varying component is applied to an electrically conducting fluid in a square enclosure. ...

Article
Large eddy simulation of flow over dunes laden with inertial particles
(2018)Waves and currents are the basic mechanisms that set sediment in motion affecting the morphology of erodible beds in coastal flows. © 2018, Springer International Publishing AG.

Article
Large Eddy Simulation of nearbed pipelines in oscillatory flow
(2018)A series of unsteady, threedimensional numerical simulations of the incompressible, oscillatory flow around a nearbed pipeline is presented. A flow at Reynolds number equal to Reαo=20,000 with respect to the oscillatory ...

Conference Object
Large eddy simulation of sediment transport for the pulsating flow past a cylinder over a horizontal bed
(International Society of Offshore and Polar Engineers, 2015)In the present work, the suspended, pulsating incompressible flow past a submerged cylinder was examined by means of Large Eddy Simulations (LES). A layer of sandy inertial particles was allowed to move between the cylinder ...

Article
Large eddy simulation of thermocline flow phenomena and mixing during discharging of an initially homogeneous or stratified storage tank
(2014)This study investigates numerically the flow phenomena developing in the discharging process of a rectangular water tank used for thermal energy storage and how these affect the thermal mixing and the associated energy ...

Article
Large eddy simulations of turbulent mixed convection in the charging of a rectangular thermal storage tank
(2013)The Large Eddy Simulation (LES) approach is used to investigate numerically the mixed convection problem arising during the charging process of a rectangular water tank used for thermal energy storage. Two different charging ...

Article
Large positive magnetoresistance in nonstoichiometric NiMnSb thin films on silicon
(2004)The transport properties of pulsedlaserdeposited NiMnSb films on silicon as a function of film thickness were discussed. It was found that a lowtemperature upturn was observed in the resistivity for film thicknesses of ...

Article
Largeeddy simulation of wave turbulent boundary layer over rippled bed
(2012)Largeeddy simulation (LES) of turbulent boundary layer induced by external oscillatory flow without or with a unidirectional component over rippled bottom is presented. These flows represent prototype turbulent flows of ...

Article
Largeeddy simulations of the turbulent Hartmann flow close to the transitional regime
(2007)A series of largeeddy simulations (LES) of turbulent and transitional channel flows of a conductive fluid under the effect of a uniform magnetic field applied in the wallnormal direction, usually referred to as Hartmann ...

Article
Largeeddy simulations of unidirectional water flow over dunes
(2009)The unidirectional, subcritical flow over fixed dunes is studied numerically using largeeddy simulation, while the immersed boundary method is implemented to incorporate the bed geometry. Results are presented for a typical ...

Article
LaSrMnCoO6: A new cubic double perovskite oxide
(2003)Singlephase polycrystalline powder samples of the double perovskite oxide LaSrMnCoO6 were synthesized by the Pechini (citrategel) technique. The structural, magnetic and electrical properties of the obtained powders were ...

Article
Lattice thermal conductivity of K 2(Bi 1zSb z) 8Se 13 solid solutions
(2004)The influence of the Bi/Sb partial substitution to the lattice thermal conductivity of the K 2(Bi 1zSb z) 8Se 13 solid solution series was studied. The variation of the lattice thermal conductivity with comparison was ...

Article
Layered atomic structures of double oxides for low shear strength at high temperatures
(2010)Double oxide phases combining a transition metal and a noble metal have recently become a subject of investigation as solid lubricant materials for hightemperature tribological applications. Here, we study the changes in ...

Article
LES of the flow past a rectangular cylinder using the immersed boundary concept
(2003)Incompressible turbulent flow past a long square cylinder is investigated using large eddy simulations LES). Results are presented and compared with available experimental databases for a Reynolds number Red = 22 000. The ...

Article
Lightinduced mobility enhancement in deltadoped GaAs/In0.26Ga0.74As/GaAs quantum wells grown by molecular beam epitaxy on GaAs(001)
(1999)Persistent photoconductivity in 80 angstroms strained GaAs/In0.26Ga0.74As/GaAs quantum wells was investigated by measuring the Shubnikov de Haas and Hall effects at 4.2 K. The quantum wells were grown by molecular beam ...

Article
Linear analysis of generalized turbulent hyperbolic flow in a rotating frame
(2007)We apply inviscid rapid distortion theory to the generalized case of turbulent hyperbolic flow in a rotating frame and investigate the dependence of the evolution of the turbulent kinetic energy on the frame rotation rate. ...