free surface flow – TechConnect Briefs

Computational Microfluidics for Miniaturised Bio-Diagnostics Devices using the code “TransAT”

Narayanan C., Lakehal D., ASCOMP GmbH, CH

We will report on our recent advances made in predicting this class of flows with our CMFD code TransAT (www.ascomp.ch), using the Level Set approach as an “Interface Tracking Method”. Our code incorporate phase-change capabilities, [...]

CFD-based Optimization of Gas/Liquid Microreactors with Droplet and Bubble Transport

Hardt S., Pennemann H., Jiang F., Institute of Microtechnology Mainz, DE

Microreactors offer unique opportunities for the control of process parameters unparalleled by macroscopic equipment. A new gas/liquid microreactor is proposed allowing for fast mass transfer and small concentration gradients as well as a very narrow [...]

Microflows with Moving Boundaries: Experiment and Simulation

Maier C., Hofer E.P., University of Ulm, DE

Surface forces and capillary effects can play a dominant role in fluidic microsystems. Therefore it is crucial for simulations to use accurate numerical approaches [1]. Furthermore experimental data gained from such surface dominated systems can [...]

Impact of Microdrops on Solid Surfaces for DNA-Synthesis

Maier C., aus der Wiesche S., Hofer E.P., University of Ulm, DE

The miniaturization of chemical synthesis procedures and their integration in complex microfluidic systems is highly interesting both commercially and scientifically. Here, dosing of microdrops for activation or passivation with high accuracy on a substrate or [...]