Zengerle R. – TechConnect Briefs

Simulation Toolkit for Micro-Fluidic Pumps using Lumped Models

Litterst C., Streule W., Zengerle R., Koltay P., IMTEK, University of Freiburg, DE

Simulation of micro pumps is complicated by the interaction of various physical domains. The fluid structure interaction (FSI) essentially determines the dynamics of micro pumps and therefore has to be taken into account. Mesh based [...]

Compact Model of a Laminar Micro Mixer

Cupelli C., Koltay P., Zengerle R., Santer M., University of Freiburg, DE

In this paper we discuss a novel approach towards a system-level description for microreactors. In particular, a compact model for laminar micromixers for fluids with different viscosities is presented. We show how the well known [...]

The Model of Porous Media – Complete Description for Aggregation of Bead-Monolayers in Flat Microfluidic Chambers

Grumann M., Dobmeier M., Schippers P., Brenner T., Zengerle R., Ducrée J., IMTEK, University of Freiburg, DE

In this paper we for the first time adopt the model of porous media to simulate the complete course of the formation of monolayers from bead suspensions in a flat microfluidic chamber. The chambers are [...]

Three-Dimensional CFD-Simulation of a Thermal Bubble Jet Printhead

Lindemann T., Sassano D., Bellone A., Zengerle R., Koltay P., University of Freiburg, DE

This paper reports on a three-dimensional simulation of a commercial, thermally actuated bubble jet printhead using an appropriate pressure boundary condition for the bubble nucleation and expansion. The ink jet system has been used as [...]

Simulation of a Micro Dispenser Using Lumped Models

Koltay P., Moosmann C., Litterst C., Streule W., Zengerle R., University of Freiburg, DE

In this paper the modelling of a micro dispenser by system simulations according to fluidic network theory is reported. The dispensing device under consideration (the so called “Nano-Jet” dispenser) is described in detail in [1]. [...]

Modelling Free Jet Ejection on a System Level – An approach for microfluidics

Koltay P., Moosmann C., Litterst C., Streule W., Birkenmeier B., Zengerle R., University of Freiburg, DE

Fast simulation of complex microfluidic systems requires consideration of network simulations based on lumped models as an alternative to standard computational fluid dynamic (CDF) simulations. In this paper we describe an analytical model of an [...]