Numerical Simulation and Modeling of Non-Newtonian Multiphase Liquids

Thursday, January 11, 2001 - 11:45am - 12:10pm
Keller 3-180
Pushpendra Singh (New Jersey Institute of Technology)
The capability of numerically simulating flows of non-Newtonian multiphase liquids, e.g., Newtonian and viscoelastic liquids containing solid particles or gas bubbles, is useful both for simulating flows in industrial applications and for modeling physics. For simulating the motion of rigid particles suspended in the Newtonian and viscoelastic fluids we have developed a distributed Lagrange multiplier/fictitious domain method (DLM). In this method the governing fluids equations are solved everywhere in the domain, including inside the particles. The flow inside the particles is forced to be a rigid body motion using a distributed Lagrange method. The level set method is used for tracking the motion of bubbles. A finite element code based on these two methods is developed for simulating the motion non-Newtonian multiphase flows in two and three-dimensions.