Authors Tseropoulos G., Dimakopoulos Y., Tsamopoulos J., Lyberatos G. Abstract The Minoan Terracotta pipes with their conical shape were widely used in the water distribution system in the ancient Minoan civilization. They remain one of the brightest achievements of the Minoan tribe in water supply technology and raise admiration as […]
2013
3 posts
Authors Karapetsas G., Tsamopoulos J. Abstract During extrusion of viscoelastic fluids various flow instabilities may arise resulting in a distorted free surface. In order to investigate the factors generating these instabilities we performed a linear stability analysis at zero Reynolds number around the steady solution of the cylindrical or planar […]
Authors Dimakopoulos Y., Pavlidis M., Tsamopoulos J. Abstract The steady, buoyancy-driven rise of a bubble in a Herschel-Bulkley fluid is examined assuming axial symmetry. The variation of the rate-of-strain tensor around a rising bubble necessitates the coexistence of fluid and solid regions in this fluid. In general, a viscoplastic fluid […]