Browsing by Author "Georgiou, Georgios C."
Now showing items 120 of 161

Article
3rd Annual European Rheology Conference (AERC 2006), Hersonisos, Crete, Greece, 2729 April 2006
Vlassopoulos, Dimitris; Georgiou, Georgios C. (2007)

Article
Analysis of the singular function boundary integral method for a biharmonic problem with one boundary singularity
Christodoulou, Evgenia; Elliotis, Miltiades C.; Georgiou, Georgios C.; Xenophontos, Christos A. (2012)In this article, we analyze the singular function boundary integral method (SFBIM) for a twodimensional biharmonic problem with one boundary singularity, as a model for the Newtonian stickslip flow problem. In the SFBIM, ...

Article
Analytical solution of the flow of a Newtonian fluid with pressuredependent viscosity in a rectangular duct
Housiadas, Kostas D.; Georgiou, Georgios C. (2018)We derive a fully analytical solution for the steady flow of an isothermal Newtonian fluid with pressuredependent viscosity in a rectangular duct. The analytical solution for the governing equations is exact (based on the ...

Article
Annular liquid jets at high Reynolds numbers
Georgiou, Georgios C. (2003)The flow of annular liquid jets at high Reynolds numbers is analysed by means of the finite element method and the fullNewton iteration scheme. Results have been obtained for various values of the inner to the outer ...

Article
Annular pressuredriven flow of a Bingham plastic with pressuredependent rheological parameters
Ioannou, Iasonas; Georgiou, Georgios C. (2019)The pressure and temperature dependence of the yield stress is well established in oil drilling. In the present work, the steady, annular pressuredriven flow of a Bingham plastic is considered under the assumption that ...

Conference Object
Applying DINEOF algorithm on cloudy seasurface temperature satellite data over the eastern mediterranean sea
Nikolaidis, A.; Georgiou, Georgios C.; Hadjimitsis, D.; Akylas, Evangelos (2013)Data Interpolating Empirical Orthogonal Functions (DINEOF) is a special technique which is based on Empirical Orthogonal Functions (EOF) in order to reconstruct missing data from satellite images. It is an innovative method, ...

Article
Asymptotic solutions of weakly compressible Newtonian Poiseuille flows with pressuredependent viscosity
Poyiadji, Stella; Housiadas, Kostas D.; Kaouri, Katerina; Georgiou, Georgios C. (2015)We consider both the axisymmetric and planar steadystate Poiseuille flows of weakly compressible Newtonian fluids, under the assumption that both the density and the shear viscosity vary linearly with pressure. The primary ...

Article
Axisymmetric Poiseuille flow of a Bingham plastic with rheological parameters varying linearly with pressure
Ioannou, Iasonas; Georgiou, Georgios C. (2018)We consider the steady axisymmetric Poiseuille flow of a Bingham plastic under the assumption that both the plastic viscosity and the yield stress vary linearly with pressure. An analytical solution is derived for the case ...

Article
Blue Energy Potential Analysis in the Mediterranean
Nikolaidis, Georgios; Karaolia, Andria; Matsikaris, Anastasios; Nikolaidis, Andreas; Nicolaides, Marios; Georgiou, Georgios C. (2019)This paper describes the status of the potential of blue energy in the Mediterranean region, with focus on the region around Cyprus. Previous studies are reviewed, the main findings of the blue energy potential analysis ...

Conference Object
Cessation flows of bingham plastics with slip at the wall
Damianou, Y.; Philippou, Maria; Kaoullas, G.; Georgiou, Georgios C. (National Technical University of Athens, 2013)We use finite elements in space and a fully implicit scheme in time in order to solve the cessation of axisymmetric Poiseuille flow of a Bingham plastic under the assumption that slip occurs along the wall. The Papanastasiou ...

Article
Cessation of annular Poiseuille flows of Bingham plastics
Chatzimina, Maria Evangelia; Xenophontos, Christos A.; Georgiou, Georgios C.; Argyropaidas, Ioannis; Mitsoulis, Evan C. (2007)We numerically solve the cessation of the annular Poiseuille flow of Bingham plastics for various values of the diameter ratio, using the regularized constitutive equation proposed by Papanastasiou and employing finite ...

Article
Cessation of Couette and Poiseuille flows of a Bingham plastic and finite stopping times
Chatzimina, Maria Evangelia; Georgiou, Georgios C.; Argyropaidas, Ioannis; Mitsoulis, Evan C.; Huilgol, R. R. (2005)We solve the onedimensional cessation Couette and Poiseuille flows of a Bingham plastic using the regularized constitutive equation proposed by Papanastasiou and employing finite elements in space and a fully implicit ...

Article
Cessation of Newtonian circular and plane Couette flows with wall slip and nonzero slip yield stress
Philippou, Maria; Damianou, Y.; Miscouridou, X.; Georgiou, Georgios C. (2017)We solve analytically the cessation flows of a Newtonian fluid in circular and plane Couette geometries assuming that wall slip occurs provided that the wall shear stress exceeds a critical threshold, the slip yield stress. ...

Article
Cessation of the liddriven cavity flow of Newtonian and Bingham fluids
Syrakos, A.; Georgiou, Georgios C.; Alexandrou, Andreas N. (2016)We provide benchmark results for a transient variant of the liddriven cavity problem, where the lid motion is suddenly stopped and the flow is left to decay under the action of viscosity. Results include Newtonian as well ...

Article
Cessation of viscoplastic Poiseuille flow in a square duct with wall slip
Damianou, Y.; Kaoullas, G.; Georgiou, Georgios C. (2015)We solve numerically the cessation of the pressuredriven Poiseuille flow of a Bingham plastic under the assumption that slip occurs along the wall following a generalized Navierslip law involving a nonzero slip yield ...

Article
Cessation of viscoplastic Poiseuille flow with wall slip
Damianou, Y.; Philippou, Maria; Kaoullas, G.; Georgiou, Georgios C. (2014)We solve numerically the cessation of axisymmetric Poiseuille flow of a HerschelBulkley fluid under the assumption that slip occurs along the wall. The Papanastasiou regularization of the constitutive equation is employed. ...

Conference Object
CFD challenge: Solutions using the commercial finite volume solver, fluent
Aristokleous, Nicolas; Khozeymeh, M. I.; Papaharilaou, Yannis; Georgiou, Georgios C.; Anayiotos, Andreas S. (2012)

Conference Object
Climate change impacts on sea surface temperature in the eastern mediterranean, levantine basin
SamuelRhoads, Y.; Zodiatis, George; Nikolaidis, A.; Hayes, D.; Georgiou, Georgios C.; Konnaris, G.; Nikolaides, Marios (2013)Increases in sea surface temperatures (SSTs) have been recorded to occur globally, with the Mediterranean SSTs rising about twice as much as those of the global oceans. Here we analyse and compare satellite remote sensing ...

Article
CoInheritance of Functional Podocin Variants with Heterozygous Collagen IV Mutations Predisposes to Renal Failure
Stefanou, Charalambos; Pieri, Myrtani; Savva, Isavella; Georgiou, Georgios C.; Pierides, Alkis M.; Voskarides, Konstantinos; ConstantinouDeltas, Constantinos D. (2015)BACKGROUND/AIMS: A subset of patients who present with proteinuria and are diagnosed with focal segmental glomerulosclerosis (FSGS) have inherited heterozygous COL4A3/A4 mutations and are also diagnosed with thin basement ...

Article
Combined effects of compressibility and slip in flows of a HerschelBulkley fluid
Damianou, Y.; Georgiou, Georgios C.; Moulitsas, I. (2013)In this work, the combined effects of compressibility and slip in Poiseuille flows of HerschelBulkley fluids are investigated. The density is assumed to obey a linear equation of state, and wall slip is assumed to follow ...