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http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.611.9001&rep=rep1&type=pdf
Simple Divergence-Free Fields for Artistic Simulation Mayur Patel1 Animal Logic Film Noah Taylor2 Animal Logic Film A bstract We discuss tools for calculating divergence-free fields for artistic particle simulations. We introduce a simple, fast divergence-free noise function which can be used for turbulence. We also describe how the
https://www.researchgate.net/publication/220494155_Simple_Divergence-Free_Fields_for_Artistic_Simulation
We discuss tools for calculating divergence-free fields for artistic particle simulations. We introduce a simple, fast divergence-free noise function which can be used for turbulence.
https://en.wikipedia.org/wiki/Simulation_noise
Aug 05, 2006 · Simulation noise is a function that creates a divergence-free field. This signal can be used in artistic simulations for the purposes of increasing the perception of extra detail. The function can be calculated in three dimensions by dividing the space into a regular lattice grid.
https://www.simscale.com/knowledge-base/divergence-simulation-knowledge-base/
Nov 17, 2020 · Even just a few bad quality cells can create instabilities in the simulation, ultimately leading to divergence. Divergence Example. To illustrate the procedure, let’s go through an example. This case is an external compressible flow simulation around a wing. The monitor reports a divergence for the pressure field at a specific point within ...
https://cs.uwaterloo.ca/~j48chang/publications/divFreeSCA.pdf
The resulting fields are guaranteed to be divergence-free by a simple calculus identity: the curl of any vector field yields a divergence-free vector field. Furthermore, our method works on cut cell grids to produce fields that strictly obey solid boundary conditions.
https://www.cati.com/blog/2011/04/divergence-and-convergence-for-simulation-results/
Divergence in a model leads to a stress quantity that continually increases as the user refines the mesh globally or in areas of localized high stress. Divergence is typically encountered when the load transfer concentrates in the geometry at a sharp corner. The stress will continue to rise based on its own definition; Stress=Force/Area With a sharp corner the area becomes, zero. This drives ...
https://houdinigubbins.wordpress.com/tag/divergence/
While divergence-free vector fields are essential for any kind of fluid simulation, curl-free and harmonic fields are essential for many other applications, such as remeshing, texture synthesis and parameterization to name a few. The irrotational component of the vector field is curl-free and hence the field is integrable.
https://www.sciencedirect.com/science/article/pii/S1631072116000395
Sep 01, 2016 · However, the results have been found to be very sensitive to the quality of the velocity field approximation, particularly regarding the satisfaction of the divergence-free condition. Such errors result in the existence within the flow field of sources and sinks which in some cases yield non-physical crossing trajectories [1] , [2] .
https://www.researchgate.net/profile/Adrian_Sescu/publication/259562153_Generation_of_Divergence-Free_Synthetic_Turbulent_Velocity_Fields_for_LESCAA_Applications/links/54e87ec60cf2f7aa4d5215b9.pdf?inViewer=true&pdfJsDownload=true&disableCoverPage=true&origin=publication_detail
Generation of Divergence-Free Synthetic Turbulent Velocity Fields for LES/CAA Applications Adrian Sescu and Ray Hixony MIME Department, University of Toledo, Toledo, OH
https://falstad.com/vector/
This java applet demonstrates various properties of vector fields. You can select from a number of vector fields and see how particles move if it is treated as either a velocity or a force field. This helps you visualize the field. The menu in the upper right has a variety of different fields to choose from. You can also input your own by ...
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