Ch. Lechner, H.C. Kuhlmann:

"Development of a code for the direct numerical simulation of particles detaching from solid walls by hydrodynamical forces";

Talk: 12th Workshop on Two-Phase Flow Predictions, Halle; 2010-03-22 - 2010-03-25; in: "Proceedings of the 12th Workshop on Two-Phase Flow Predictions", M. Sommerfeld (ed.); (2010), ISBN: 978-3-86829-222-0.

We report on our current progress in developing a code to be applied in

the context of the cleaning of wafer surfaces by hydromechanical forces.

Our goal is to study the detachment of (submicron) particles, exposed to a

shear flow, from a wall by means of direct numerical simulation.

The particles will be treated as rigid bodies with a two-way

interaction with the fluid.

Our software is based on OpenFOAM.

Following Uhlmann (2005) and Taira(2007) we implement

an immersed boundary method with direct forcing.

The interpolation between the fixed Eulerian grid and the Lagrangian

marker points is performed with the regularized delta-function introduced

by Peskin( 2002). For the time being we implemented this

approach in 2D using OpenFOAM's standard solver

icoFoam to

solve the incompressible Navier-Stokes equations. To validate the

implementation we present results on standard benchmark tests of the

flow around a cylinder with prescribed motion.

Immersed-boundary method, direct forcing, finite-volume method, OpenFOAM, Navier-Stokes equations, particulate flow

https://publik.tuwien.ac.at/files/publik_185603.pdf

Created from the Publication Database of the Vienna University of Technology.