Dispersed-phase structural anisotropy in homogeneous magnetohydrodynamic turbulence at low magnetic Reynolds number

dc.contributor.author	Rouson, D. W. I.	en
dc.contributor.author	Κασινός, Σταύρος Χ.	el
dc.contributor.author	Μουλίτσα, Ειρήνη	el
dc.contributor.author	Σαρρής, Ιωάννης Ε.	el
dc.contributor.author	Xu, X.	en
dc.date.accessioned	2015-05-05T21:06:48Z
dc.date.available	2015-05-05T21:06:48Z
dc.date.issued	2015-05-06
dc.identifier.uri	http://hdl.handle.net/11400/9778
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://scitation.aip.org/	en
dc.subject	Numerical method
dc.subject	Dispersed-phase statistics
dc.subject	Software
dc.subject	Turbulence statistics
dc.subject	αριθμητική μέθοδος
dc.subject	Στατιστικές διεσπαρμένης φάσης
dc.subject	λογισμικό
dc.subject	στατιστικές αναταράξεις
dc.title	Dispersed-phase structural anisotropy in homogeneous magnetohydrodynamic turbulence at low magnetic Reynolds number	en
heal.type	journalArticle
heal.generalDescription	Published with open access and featured on the cover	en
heal.classification	Technology
heal.classification	Engineering
heal.classification	Τεχνολογία
heal.classification	Μηχανική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/19795-3
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Μηχανική
heal.keywordURI	http://zbw.eu/stw/descriptor/19591-5
heal.identifier.secondary	DOI: 10.1063/1.2832776
heal.language	en
heal.access	free
heal.publicationDate	2008
heal.bibliographicCitation	ROUSON, D.W.I., KASSINOS, S.C., MOYLITTSAS, I., SARRIS, I.E. & XU, X. (2008). Dispersed-phase structural anisotropy in homogeneous magnetohydrodynamic turbulence at low magnetic Reynolds number . Physics of Fluids. [Online] 20. p.025101 - 025101-19. Available from: http://scitation.aip.org/[Accessed 04/02/2008]	en
heal.abstract	A new tensor statistic, the dispersed-phase structure dimensionality Dp, is defined to describe the preferred orientation of clusters of discrete bodies. The evolution of Dp is calculated via direct numerical simulations of passive, Stokesian particles driven by initially isotropic, decaying magnetohydrodynamicturbulence. Results are presented for five magnetic field strengths as characterized by magnetic interaction parameters, N, in the range 0–50. Four field strengths are studied at a grid resolution of 1283. The strongest field strength is also studied at 2563 resolution. In each case, the externally applied magnetic field was spatially uniform and followed a step function in time. Particles with initially uniform distributions were tracked through hydrodynamicturbulence for up to 2800 particle response times before the step change in the magnetic field. In the lower resolution simulation, the particle response time, τp, matched the Kolmogorov time scale at the magnetic field application time t0. The higher-resolution simulation tracked ten sets of particles with τp spanning four decades bracketing the Kolmogorov time scale and the Joule time. The results demonstrate that Dp distinguishes between uniformly distributed particles, those organized into randomly oriented clusters, and those organized into two-dimensional sheets everywhere tangent to the magnetic field lines. Lumley triangles are used to demonstrate that the degree of structural anisotropy depends on τp, N, and the time span over which the magnetic field is applied.	en
heal.publisher	American Institute of Physics	en
heal.journalName	Physics of Fluids	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true