1,636 research outputs found
Influence of local and adaptive mesh refinement on the tip vortex characteristics of a wing and propeller
Two different methods to obtain nearly grid independent solutions for tip
vortex flow were tested for a wing and a propeller. A priory mesh refinement inside a
tube with a helix shaped centre line worked quite well, reducing the grid dependency of the minimum
pressure in the vortex core significantly but the accuracy still depends on the initial mesh.
Better results were obtained with adaptive mesh refinement using the jump based estimator.
Projection of new created nodes to the exact geometry is required
to obtain high accuracy
EURCYL A Computer Program to Generate Finite Element Meshes for Cylinder-Cylinder Intersections. EUR 5030.
EURCYL - A Program to Generate Finite Element Meshes for Pressure Vessel Nozzles. E.S.M.I.S. EUR 5257.
Effectiveness of manual therapy for chronic tension-type headache: a pragmatic, randomised, clinical trial
To evaluate the effectiveness of manual therapy (MT) in participants with chronic tension-type headache (CTTH)
Fermionic matter-wave quantum optics with cold-atom impurity models
Motivated by recent cold-atom realisations of matter-wave waveguide QED, we
study simple fermionic impurity models and discuss fermionic analogues of
several paradigmatic phenomena in quantum optics, including formation of
non-trivial bound states, (matter-wave) emission dynamics, and collective
dissipation. For a single impurity, we highlight interesting ground-state
features, focusing in particular on real-space signatures of an emergent length
scale associated with an impurity screening cloud. We also present novel
non-Markovian many-body effects in the quench dynamics of single- and
multiple-impurity systems, including fractional decay around the Fermi level
and multi-excitation population trapping due to bound states in the continuum.Comment: 24 pages, 7 figures, comments welcom
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