Zobrazeno 1 - 10
of 55
pro vyhledávání: '"John Steinhoff"'
Publikováno v:
Methods and Applications of Analysis. 21:123-150
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::538e4829b89cd00958976676580be31a
https://doi.org/10.4310/maa.2014.v21.n1.a6
https://doi.org/10.4310/maa.2014.v21.n1.a6
Autor:
Subhashini Chitta, John Steinhoff
Publikováno v:
Journal of Computational Physics. 231:6306-6322
The linear wave equation represents the basis of many linear electromagnetic and acoustic propagation problems. Features that a computational model must have, to capture large scale realistic effects (for over the horizon or ''OTH'' radar communicati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::811c92edc57fdac1150965fb8c8fa3df
https://doi.org/10.1016/j.jcp.2012.05.008
https://doi.org/10.1016/j.jcp.2012.05.008
Autor:
Subhashini Chitta, John Steinhoff
Publikováno v:
Mathematics and Computers in Simulation. 80:752-762
A new numerical method has been developed to propagate short wave equation pulses over indefinite distances and through regions of varying index of refraction, including multiple reflections. The method, ''Wave Confinement'', utilizes a newly develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::005cba588ebddd8821db05ae5c60c816
https://doi.org/10.1016/j.matcom.2009.08.014
https://doi.org/10.1016/j.matcom.2009.08.014
Publikováno v:
AIAA Journal. 41:809-816
The vorticity cone nement technique, which represents a very effective, unie ed way of treating complex, highReynolds-number separated e ows with thin convecting vortices, as well as thin attached boundary layers, over complex solid bodies. Conventio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1ad731a3ab9406eaefdbbb12c1c6531
https://doi.org/10.2514/2.2042
https://doi.org/10.2514/2.2042
Publikováno v:
Journal of Scientific Computing. 19:457-478
A new version of a computational method, Vorticity Confinement, is described. Vorticity Confinement has been shown to efficiently treat thin features in multi-dimensional incompressible fluid flow, such as vortices and streams of passive scalars, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9019fb71c49c5c1e7a250ef945308752
https://doi.org/10.1023/a:1025376630288
https://doi.org/10.1023/a:1025376630288
Publikováno v:
AIAA Journal. 40:1945-1953
It is well known that modern computational fluid dynamics codes based on Eulerian descriptions do not adequately handle flows involving the convection of thin vortical layers. These layers often remain very thin and persist long distances without sig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e5f198d3c232d21a7b8f83b278f9699
https://doi.org/10.2514/2.1555
https://doi.org/10.2514/2.1555
Publikováno v:
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).
A new method is presented to compute radar returns scattered by a wind mill farm. This method will enhance the capability of the radar systems to locate low flying aircraft near the wind farm. This uses a previously developed method, Wave Confinement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9874fdf4293a738f11c3de17941eacc7
https://doi.org/10.1109/aps.2014.6904694
https://doi.org/10.1109/aps.2014.6904694
Publikováno v:
20th AIAA/CEAS Aeroacoustics Conference.
A new Eulerian method, "Wave Confinement", is presented for propagating short acoustic signals over long distances through realistic environments, without numerically induced spreading. Effects due to atmospheric and ground variations are automatical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcdea700985f98a55fd4446203865e1f
https://doi.org/10.2514/6.2014-3196
https://doi.org/10.2514/6.2014-3196
Publikováno v:
Journal of Computational Physics. 157:683-706
A new method is described to compute short acoustic or electromagnetic pulses that propagate according to geometrical optics. The pulses are treated as zero thickness sheets that can propagate over long distances through inhomogeneous media with mult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afa555ee087870e8045daa9201537292
https://doi.org/10.1006/jcph.1999.6389
https://doi.org/10.1006/jcph.1999.6389
Publikováno v:
AIAA Journal. 33:1447-1453
A new numerical method based on adding a term to the Euler/Navier-Stokes equations has demonstrated that it can effectively treat vortex-dominated flows using low-order numerical schemes and coarse grids. With the technique, numerical diffusion intro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::664c8397451fca6eddf94fa052fad93d
https://doi.org/10.2514/3.12567
https://doi.org/10.2514/3.12567