Regensburg 2022 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 46: Poster Session: Complex Fluids, Soft Matter, Active Matter, Glasses and Granular Materials
DY 46.1: Poster
Donnerstag, 8. September 2022, 15:00–18:00, P2
Analysis of liquid distribution in microchannel systems using the electro-hydraulic analogy — •Marius Pätzold1, Felix Senf1, Carl E. Krill III2, and Othmar Marti1 — 1Institut für experimentelle Physik, Universität Ulm — 2Institut für funktionelle Nanosystem, Universität Ulm
The research program investigates the calculation of leakages in hydraulic systems by modelling the latter using electric resistor networks as an alternative to simulations employing computational fluid dynamics.
Based on a rigid geometry that describes a network of channels having rectangular cross sections of constant height, the hydraulic properties of the network are examined. The system is then modelled using an electric resistor network that incorporates these hydraulic properties. For a given pressure drop between the inlet and outlets, the model can be solved and leakages can be calculated using a modified nodal analysis.
The results show that modelling the geometry in this manner can be an efficient alternative to simulations using computational fluid dynamics within the requirements set by the electric-hydraulic analogy. Modelling hydraulic networks that are not within these requirements, like those with very short channels or highly complex channel networks, leads to the propagation of errors through the network, resulting in significant differences between the modelling and simulation approach.