Daniel Stoll
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Influence of Humidity on the Electric Field, Filtration Efficiency, and Flow Velocity in Electret Filter Media: Direct Numerical Simulation Open
Electret filter media are electrostatically charged during the manufacturing process to activate effective electrical separation mechanisms. In order to investigate the influence of humidity on these mechanisms, the electric field, and fil…
Influence of Humidity on FFP Masks with Electret Filter Media Under Real-Life Wearing Conditions Open
Most FFP (Filtering Face Piece) masks are made from nonwoven filter media that are electrostatically charged, resulting in the additional electrostatic capture mechanism of particles. The protective effect of these masks is therefore mainl…
Suitability of Low-Cost Sensors for Submicron Aerosol Particle Measurement Open
The measurement and assessment of indoor air quality in terms of respirable particulate constituents is relevant, especially in light of the COVID-19 pandemic and associated infection events. To analyze indoor infectious potential and to d…
Experimental and Numerical Investigation of the Aerodynamic Ventilation Drag of Heavy-Duty Vehicle Wheels Open
Due to current EU regulations, constant-speed testing on test tracks is used for aerodynamic certification of heavy-duty vehicles (HDV). However, the aerodynamic development of HDVs is performed using wind tunnels and computational fluid d…
On Benford’s Law and the Coefficients of the Riemann Mapping Function for the Exterior of the Mandelbrot Set Open
We investigate Benford’s law in relation to fractal geometry. Basic fractals, such as the Cantor set and Sierpinski triangle are obtained as the limit of iterative sets, and the unique measures of their components follow a geometric distri…
Aerodynamics of High-Speed Trains with Respect to Ground Simulation Open
Wind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model is usually mounted above a static ground plane, but a moving ground is necessary for the correct representati…
The Aesthetics of Storytelling and Literary Criticism as Mythological Ritual: The Myth of the Human Tragic Hero, Intertextual Comparisons Between the Heroes and Monsters of Beowulf and the Anglo-Saxon Exodus Open
For thousands of years, people have been hearing, reading, and interpreting stories and myths in light of their own experience. To read a work by a different author living in a different era and setting, people tend to imagine works of lit…