But using an endoscope inserted in the fishes' mouths and doing some basic calculations of fluid dynamics, the researchers discovered that the rakers act instead as a cross-flow filter.
Pressure loss measurements have been typically used to determine the hydrodynamic roughness for the pipeline tests using some basic equations of fluid dynamics, such as the Darcy Weisbach equation or the Colebrook correlation (e.g., Barton et al. 2008).
Numerical examples are presented to show that even very simple problems, including basic problems in fluid dynamics, are not approximated well by schemes with anisotropy artificial viscosity, regardless of numerical parameters.
A description is given of the basic equations of computational fluid dynamics and mesh types.
The advantage of the upscaling technique is that the derivation of the final equation proceeds rigorously from the basic laws of the fluid dynamics, so that the results obtained have a sound physical basis, rather than relying on heuristic assumptions.
These studies under in vitro conditions are well suited to investigate basic phenomena related to fluid dynamics in vessels models but are not fully representative of actual patient hemodynamic conditions.
This paper reviews the operating principles and fluid dynamics basics of various types, cylindrical rotating membranes, disks or blades rotating near a fixed membrane, rotating flat circular membranes, multi-shaft systems with overlapping rotating ceramic membranes and vibrating systems with toroidal membrane oscillations around an axis, or vibrating hollow fibers cartridges.
FBCNS, with its focus on basic research into barriers, brain fluid dynamics and associated diseases, aims to foster such advances.
High-resolution, three-dimensional flow is precomputed for a set of basic geometrical features using traditional computational fluid dynamics (CFD) techniques.
