Authors Dimakopoulos Y., Tsamopoulos J. Abstract We examine the transient displacement of a viscoplastic material from straight or suddenly constricted cylindrical tubes of finite length. Our general goal is to develop accurate and efficient numerical methods for the fundamental study of processes in which a gas is displacing a liquid […]
2003
3 posts
Authors Dimakopoulos Y., Tsamopoulos J. Abstract We study the displacement of a viscous fluid by highly pressurized air in a straight or a suddenly constricted cylindrical tube of finite length. In contrast to previous efforts, the transient situation is examined. A long, narrower than the tube and round-ended bubble is […]
Authors Dimakopoulos Y., Tsamopoulos J. Abstract We have developed a quasi-elliptic set of equations for generating a discretization mesh that optimally conforms to an entire domain that undergoes large deformations in primarily one direction. We have applied this method to the axisymmetric problem of the transient displacement of a viscous […]