CFD‐Simulation und LDA‐Messung der Strömungsvorgänge beim Fluidphasenresonanzmischen

The principle of fluid phase resonance mixing is to apply harmonic oscillating pressure via a gas cushion on a liquid phase in a vessel and thus to cause the liquid phase to start oscillating. This principle is simulated as an unsteady flow of two separate phases with open source CFD software OpenFOAM and the results are verified with measurements by Laser Doppler Anemometry.     

CFD‐Simulation der Feststoffeinbindung in einen Sprühstrahl

Sound‐absorbing mats consisting of cross‐linked Polyurethane (PUR) foam and metal reinforcements, door panels and centre consoles for the interior of vehicles became important products for automotive component suppliers. The leading technology for the production of foam on the base of PUR with noise absorbing properties is the application of powder insertion (e.g. metal) in the PUR spray. The numerical simulation (CFD) of the spray including the particle‐droplet interaction is presented. The theoretical background of the implemented models is explained and the experimental results achieved with a pilot plant are compared with the numerical results. The presented simulation offers the possibility to suitably predict the metal powder distribution in a PUR spray.     

CFD‐Simulation zur Berechnung der durch Gewebestrukturen induzierten Strömungsfelder mithilfe der Immersed‐boundary‐Methode

Woven structures are often used for separation of solid particles. The solid phase is separated when the fluid flows through the woven structure. Knowing the nature of the flow can be profitably used for the optimization of these structures (e.g., reduction of the pressure loss) and to predict the separation efficiency. In general, computational fluid dynamics allows the calculation of the flow field. In this paper, the immersed boundary method is shown as an efficient way to simulate the flow field within woven structures and reduce modeling efforts compared to the standard CFD method.