Browsing by Subject "Newtonian fluids"

Now showing items 1-11 of 11

    • Article  

      Asymptotic solutions of weakly compressible Newtonian Poiseuille flows with pressure-dependent viscosity 

      Poyiadji, Stella; Housiadas, Kostas D.; Kaouri, Katerina; Georgiou, Georgios C. (2015)
      We consider both the axisymmetric and planar steady-state 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  

      Cessation of Newtonian circular and plane Couette flows with wall slip and non-zero 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  

      Development lengths in Newtonian Poiseuille flows with wall slip 

      Kountouriotis, Zacharias; Philippou, Maria; Georgiou, Georgios C. (2016)
      The effect of wall slip on the development of planar and axisymmetric Newtonian Poiseuille flows is studied by means of finite element simulations. The Navier slip law is employed. i.e., it is assumed that the slip velocity ...
    • Article  

      Newtonian flow in a triangular duct with slip at the wall 

      Georgiou, Georgios C.; Kaoullas, G. (2013)
      We consider the Newtonian Poiseuille flow in a tube whose cross-section is an equilateral triangle. It is assumed that boundary slip occurs only above a critical value of the wall shear stress, namely the slip yield stress. ...
    • 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 ...
    • Article  

      Newtonian Poiseuille flows with slip and non-zero slip yield stress 

      Kaoullas, G.; Georgiou, Georgios C. (2013)
      The Newtonian Poiseuille flow is considered for various geometries, under the assumption that wall slip occurs above a critical value of the wall shear stress known as, the slip yield stress. In the axisymmetric and planar ...
    • Doctoral Thesis  Open Access

      Numerical simulations of compressible generalized newtonian flows 

      Taliadorou, Eleni G. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2009-01)
      Στη παρούσα διατριβή μελετήσαμε με αριθμητικές μεθόδους και μεθόδους διαταραχών ς συμπιεστές Νευτώνειες και γενικευμένες Νευτώνειες ροές. Αρχικά, μελετήσαμε αριθμητικά την χρονομεταβαλλόμενη συμπιεστή εκβολή ρευστού Carreau ...
    • Article  

      On the combined effects of slip, compressibility, and inertia on the Newtonian extrudate-swell flow problem 

      Kountouriotis, Zacharias; Georgiou, Georgios C.; Mitsoulis, Evan C. (2013)
      We solve both the planar and axisymmetric extrudate-swell flows of a compressible Newtonian liquid with Navier slip at the wall, using the finite-element method in space and a fully-implicit finite-difference scheme in ...
    • Doctoral Thesis  Open AccessOpen Access

      Perturbation solutions of weakly compressible Newtonian Poiseuille flows with pressure-dependent viscosity 

      Poyiadji, Stella V. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2012-05)
      Στη διατριβή αυτή θεωρούμε Νευτώνειες ροές Poiseuille όπου η πυκνότητα ή/και το ιξώδες είναι συναρτήσεις της πίεσης. Όπου είναι δυνατόν, βρίσκουμε ακριβείς λύσεις ή προσεγγιστικές λύσεις μέσω ασυμπτωτικών αναπτυγμάτων τα ...
    • Article  

      Start-up and cessation Newtonian Poiseuille and Couette flows with dynamic wall slip 

      Kaoullas, G.; Georgiou, Georgios C. (2015)
      Analytical solutions are derived for the start-up and cessation Newtonian Poiseuille and Couette flows with wall slip obeying a dynamic slip model. This slip equation allows for a relaxation time in the development of wall ...
    • Article  

      A study of various factors affecting Newtonian extrudate swell 

      Mitsoulis, Evan C.; Georgiou, Georgios C.; Kountouriotis, Zacharias (2012)
      Finite-element simulations have been undertaken for the benchmark problem of extrudate swell present in extrusion. Both cases of planar and axisymmetric domains were considered under laminar, isothermal, steady-state ...