Πλοήγηση ανά Συγγραφέα "Vlachos, N. S."
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Numerical modelling of rotating tangential layers (jets) in shells under strong uniform magnetic field
Fidaros, D. K.; Bühler, L.; Grecos, A. P.; Vlachos, N. S. (2010)A numerical study of tangential layers in steady-state magnetohydrodynamic rotating flows is presented using CFD to solve the inductionless governing equations. The analysis considers two basic flow configurations. In the ... -
Numerical modelling of simulated blood flow in idealized composite arterial coronary grafts: Transient flow
Politis, A. K.; Stavropoulos, G. P.; Christolis, M. N.; Panagopoulos, P. G.; Vlachos, N. S.; Markatos, N. C. (2008)In composite arterial coronary grafts (CACGs), transport phenomena and geometry may considerably alter blood flow dynamics. CACGs aim at revascularizing pathological arteries according to the human anatomy. However, the ... -
Numerical study of educed coherent structures in the near-wall region of a particle-laden channel flow
Dritselis, C. D.; Vlachos, N. S. (2008)The interaction of small heavy solid particles with turbulence near the wall of a vertical downward channel flow is investigated by using direct numerical simulation (DNS) and Lagrangian particle tracking. The interest is ... -
On the limits of validity of the low magnetic Reynolds number approximation in MHD natural-convection heat transfer
Sarris, I. E.; Zikos, G. K.; Grecos, A. P.; Vlachos, N. S. (2006)In the majority of magnetohydrodynamic (MHD) natural-convection 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, ... -
A parametric study of a solar calcinator using computational fluid dynamics
Fidaros, D. K.; Baxevanou, C. A.; Vlachos, N. S. (2007)In this work a horizontal rotating solar calcinator is studied numerically using computational fluid dynamics. The specific solar reactor is a 10 kW model designed and used for efficiency studies. The numerical model is ... -
A parametric study of the aeroelastic behaviour of wind turbine blades in classical flutter
Baxevanou, C. A.; Chaviaropoulos, P. K.; Vlachos, N. S. (2006)A parametric study of the aeroelastic behaviour of a wind turbine blade 'typical section' in classical flutter is presented, using a new numerical model. The aerodynamic loads are computed by solving the RANS equations ... -
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 cross-section 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 ...