Browsing by Author "Panaseti, Pandelitsa"
Now showing items 1-9 of 9
-
Article
A C1-conforming hp finite element method for fourth order singularly perturbed boundary value problems
Panaseti, Pandelitsa; Zouvani, A.; Madden, N.; Xenophontos, Christos A. (2016)We consider a fourth order singularly perturbed boundary value problem (BVP) in one-dimension and the approximation of its solution by the hp version of the Finite Element Method (FEM). The given problem's boundary conditions ...
-
Conference Object
Development of confined viscoplastic flows with heterogeneous wall slip
Panaseti, Pandelitsa; Philippou, Maria; Kountouriotis, Zacharias; Georgiou, Georgios C. (National Technical University of Athens, 2016)The steady, pressure-driven flow of a Herschel-Bulkley fluid in a channel is considered assuming that slip occurs on one wall only due to slip heterogeneities. Hence, the velocity profile is allowed to be asymmetric. The ...
-
Article
hp finite element methods for fourth order singularly perturbed boundary value problems
Xenophontos, Christos A.; Melenk, M.; Madden, N.; Oberbroeckling, L.; Panaseti, Pandelitsa; Zouvani, A. (2013)We consider fourth order singularly perturbed boundary value problems (BVPs) in one-dimension and the approximation of their solution by the hp version of the Finite Element Method (FEM). If the given problem's boundary ...
-
Article
Lubrication solution of the flow of a Herschel-Bulkley fluid with pressure-dependent rheological parameters in an asymmetric channel
Panaseti, Pandelitsa; Georgiou, Georgios C.; Ioannou, Iasonas (2019)The lubrication flow of a Herschel-Bulkley fluid in a long asymmetric channel, the walls of which are described by two arbitrary functions h1(x) and h2(x) such that h1(x) < h2(x) and h1(x) + h2(x) are linear, is solved ...
-
Article
Newtonian Poiseuille flows with pressure-dependent wall slip
Panaseti, Pandelitsa; Housiadas, Kostas D.; Georgiou, Georgios C. (2013)The effect of pressure-dependent slip at the wall in steady, isothermal, incompressible Poiseuille flows of a Newtonian liquid is investigated. Exponential dependence of the slip coefficient on the pressure is assumed and ...
-
Conference Object
Numerical and asymptotic solutions of axisymmetric Poiseuille flows of yield stress fluids with pressure-dependent rheological parameters
Housiadas, Kostas; Ioannou, Iasonas; Panaseti, Pandelitsa; Georgiou, Georgios C. (GRACM, 2018)The lubrication flow of a Bingham plastic in long tubes of varying radius is modeled using the approach proposed by Fusi and Farina (Appl. Math. Comp. 320, 1-15 (2018)). Both the plastic viscosity and the yield stress are ...
-
Article
Pressure-driven flow of a Herschel-Bulkley fluid with pressure-dependent rheological parameters
Panaseti, Pandelitsa; Damianou, Yiolanda; Georgiou, Georgios C.; Housiadas, Kostas D. (2018)The lubrication flow of a Herschel-Bulkley fluid in a symmetric long channel of varying width, 2h(x), is modeled extending the approach proposed by Fusi et al. [“Pressure-driven lubrication flow of a Bingham fluid in a ...
-
Article
Viscoplastic Couette Flow in the Presence of Wall Slip with Non-Zero Slip Yield Stress
Damianou, Yiolanda; Panaseti, Pandelitsa; Georgiou, Georgios C. (2019)The steady-state Couette flow of a yield-stress material obeying the Bingham-plastic constitutive equation is analyzed assuming that slip occurs when the wall shear stress exceeds a threshold value, the slip (or sliding) ...
-
Article
Viscoplastic flow development in a channel with slip along one wall
Panaseti, Pandelitsa; Georgiou, Georgios C. (2017)The flow development of a Herschel–Bulkley fluid in a horizontal channel is considered assuming that slip occurs only on the upper wall due to slip heterogeneities. Hence, the velocity profile is allowed to be asymmetric ...