• 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 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  

      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 Herschel-Bulkley fluid under the assumption that slip occurs along the wall. The Papanastasiou regularization of the constitutive equation is employed. ...
    • Conference Object  

      Stopping times in cessation flows of Bingham plastics with slip at the wall 

      Philippou, Maria; Damianou, Y.; Kaoullas, G.; Georgiou, Georgios C. (2012)
      We solve numerically the cessation of axisymmetric Poiseuille flow of a Bingham plastic assuming that slip occurs along the wall. A power-law expression is used to relate the wall shear stress to the slip velocity. The ...