C Moosmann

TL;DR: An exemplary study of the performance of commercial computational fluid dynamic (CFD) software programs when applied as engineering tool for microfluidic applications and the capability of the software programs to deal with free surface flows including surface tension and flow patterns of two fluids is studied.

TL;DR: In this paper, a parametric ordinary differential equation system based on a small number of systems with different parameter settings is proposed to parameterize the geometry of a model of a micro-gyroscope, where the relative error introduced by the parameterization lies in the region of.

TL;DR: A method, based on timevarying matrices or parameters that are to be preserved for the reduced model, is demonstrated, which can tremendously shorten computational times for transient and harmonic analyses.

TL;DR: In the wound care center, surgical disciplines, diabetology, dermatology and diagnostic work-up are coordinated, and liaison with the family doctor and home care providers practiced.

Abstract: 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]. In this device the dispensing process is triggered by the displacement of a diaphragm. Upon this actuation a free jet of liquid in the volume range of 10 nl to 100 nl is ejected from the orifice of the device. Thus the system is in some sense similar to an ink-jet print head except the fact, that a liquid jet is generated rather than droplets and a much larger volume is delivered. To set up a system model for the sketched device first a lumped model for a circular plate is derived which accounts for all essential features of fluid structure interaction (FSI) in the system. Then the plate model is combined with lumped elements of a fluidic channel and a nozzle to yield the system model of the dispenser. The results obtained with the system model are compared to experimental data in terms of ejected volume and influence of system parameters.