Browsing by Author "Sarris, I. E."
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3D simulations of flows in the reconstituted lake Karla, Thessaly, Greece
Neveskiotis, H.; Tserdani, K.; Sarris, I. E.; Karakasidis, T. E.; Liakopoulos, A. (2010)We report on threedimensional flow simulations carried out in order to describe the dominant water current patterns in the reconstituted lake Karla. The flow is considered to be generated mainly by wind shear while the ... 
3D Features in the Calendering of Thermoplastics: A Computational Investigation
Polychronopoulos, N. D.; Sarris, I. E.; Papathanasiou, T. D. (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 ... 
Analytical and numerical study of MHD natural convection in a horizontal shallow cavity with heat generation
Benos, L. T.; Kakarantzas, S. C.; Sarris, I. E.; Grecos, A. P.; Vlachos, N. S. (2014)A study is presented of twodimensional MHD natural convection flow in an internally heated horizontal shallow cavity in the presence of an external uniform vertical magnetic field. The main feature of the present flow is ... 
Buoyancyassisted mixed convection in a vertical channel with spatially periodic wall temperature
Dritselis, C. D.; Iatridis, A. J.; Sarris, I. E.; Vlachos, N. S. (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 ... 
Direct numerical simulation of a heat removal configuration for fusion blankets
Kakarantzas, S. C.; Grecos, A. P.; Vlachos, N. S.; Sarris, I. E.; Knaepen, B.; Carati, D. (2007)A series of direct numerical simulations (DNS) are performed to study the natural convection heat transfer between concentric cylinders at several Rayleigh and Hartmann numbers. The buoyant flow is driven by the temperature ... 
Laminar Free Convection in a Square Enclosure Driven by the Lorentz Force
Sarris, I. E.; Grigoriadis, D. G. E.; Vlachos, N. S. (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. ... 
Magnetic field effect on the cooling of a lowPr fluid in a vertical cylinder
Sarris, I. E.; Iatridis, A. I.; Dritselis, C. D.; Vlachos, N. S. (2010)Results of direct numerical simulations are presented for the transient and turbulent natural convection cooling of an initially isothermal quiescent liquid metal placed in a vertical cylinder in the presence of a vertical ... 
Magnetohydrodynamic natural convection in a vertical cylindrical cavity with sinusoidal upper wall temperature
Kakarantzas, S. C.; Sarris, I. E.; Grecos, A. P.; Vlachos, N. S. (2009)A series of numerical simulations were performed in order to study liquid metal MHD natural convection in a vertical cylindrical container with a sinusoidal temperature distribution at the upper wall and the other surfaces ... 
MAGNETOHYDRODYNAMIC NATURAL CONVECTION OF LIQUID METAL BETWEEN COAXIAL ISOTHERMAL CYLINDERS DUE TO INTERNAL HEATING
Kakarantzas, S. C.; Sarris, I. E.; Vlachos, N. S. (2014)Direct numerical simulation results are presented of magnetohydrodynamic liquid metal flow between two vertical coaxial cylinders under the effect of internal heating and a horizontal magnetic field. The end walls are ... 
MHD flow past a circular cylinder using the immersed boundary method
Grigoriadis, D. G. E.; Sarris, I. E.; Kassinos, S. C. (2010)The immersed boundary method (IB hereafter) is an efficient numerical methodology for treating purely hydrodynamic flows in geometrically complicated flowdomains. Recently Grigoriadis et als. [1] proposed an extension of ... 
MHD natural convection in a laterally and volumetrically heated square cavity
Sarris, I. E.; Kakarantzas, S. C.; Grecos, A. P.; Vlachos, N. S. (2005)A numerical study is presented of unsteady twodimensional natural convection of an electrically conducting fluid in a laterally and volumetrically heated square cavity under the influence of a magnetic field. The flow is ... 
Natural convection in a 2D enclosure with sinusoidal upper wall temperature
Sarris, I. E.; Lekakis, I.; Vlachos, N. S. (2002)Natural convection in a twodimensional, rectangular enclosure with sinusoidal temperature profile on the upper wall and adiabatic conditions on the bottom and sidewalls is numerically investigated. The applied sinusoidal ... 
Natural convection in rectangular tanks heated locally from below
Sarris, I. E.; Lekakis, I.; Vlachos, N. S. (2004)The present study was undertaken in order to gain understanding of certain aspects of natural convection in a glassmelting tank heated locally from below. Based on numerical predictions, the effects of Rayleigh number, ... 
Natural convection of liquid metal in a vertical annulus with lateral and volumetric heating in the presence of a horizontal magnetic field
Kakarantzas, S. C.; Sarris, I. E.; Vlachos, N. S. (2011)MHD free convection of a liquid metal is studied in a closed vertical annulus in which the upper and bottom walls are adiabatic while the cylindrical walls are kept at different temperatures. The flow is driven by two ... 
On the limits of validity of the low magnetic Reynolds number approximation in MHD naturalconvection heat transfer
Sarris, I. E.; Zikos, G. K.; Grecos, A. P.; Vlachos, N. S. (2006)In the majority of magnetohydrodynamic (MHD) naturalconvection simulations, the Lorentz force due to the magnetic field is suppressed into a damping term resisting the fluid motion. The primary benefit of this hypothesis, ... 
TRANSIENT LAMINAR MHD NATURAL CONVECTION COOLING IN A VERTICAL CYLINDER
Iatridis, A. J.; Dritselis, C. D.; Sarris, I. E.; Vlachos, N. S. (2012)A numerical study is presented of transient laminar natural convection cooling of an electrically conductive fluid, placed in a vertical cylinder in the presence of an axial magnetic field. The cylindrical wall is suddenly ... 
Transition of an electromagnetically driven liquid metal flow from laminar to turbulent in a toroidal square duct
Iatridis, A. I.; Sarris, I. E.; Vlachos, N. S. (2013)The electromagnetically driven liquid metal flow in a toroidal duct of a square crosssection is studied numerically searching for the critical Reynolds (Re) and Hartmann (Ha) numbers where transition occurs. Results are ... 
Transport and deposition of neutral particles in magnetohydrodynamic turbulent channel flows at low magnetic Reynolds numbers
Dritselis, C. D.; Sarris, I. E.; Fidaros, D. K.; Vlachos, N. S. (2011)The effect of Lorentz force on particle transport and deposition is studied by using direct numerical simulation of turbulent channel flow of electrically conducting fluids combined with discrete particle simulation of the ...