Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7602
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Bilotta, G.; Università di Catania, Dipartimento di Matematica e Informatica, Catania, Italy | en |
dc.contributor.authorall | Russo, G.; Università di Catania, Dipartimento di Matematica e Informatica, Catania, Italy | en |
dc.contributor.authorall | Herault, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Del Negro, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.date.accessioned | 2012-01-27T08:46:40Z | en |
dc.date.available | 2012-01-27T08:46:40Z | en |
dc.date.issued | 2011 | en |
dc.identifier.uri | http://hdl.handle.net/2122/7602 | en |
dc.description.abstract | First-order moving least-squares are typically used in conjunction with smoothed particle hydrodynamics in the form of post-processing filters for density fields, to smooth out noise that develops in most applications of smoothed particle hydrodynamics. We show how an approach based on higher-order moving least-squares can be used to correct some of the main limitations in gradient and second-order derivative computation in classic smoothed particle hydrodynamics formulations. With a small increase in computational cost, we manage to achieve smooth density distributions without the need for post-processing and with higher accuracy in the computation of the viscous term of the Navier–Stokes equations, thereby reducing the formation of spurious shockwaves or other streaming effects in the evolution of fluid flow. Numerical tests on a classic two-dimensional dam-break problem confirm the improvement of the new approach. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Annals of Geophysics | en |
dc.relation.ispartofseries | 5/54 (2011) | en |
dc.subject | Algorithms and implementation, Smoothed particle hydrodynamics, Moving least-squares, Mesh-free | en |
dc.title | Moving least-squares corrections for smoothed particle hydrodynamics | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.description.pagenumber | 622-633 | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous | en |
dc.subject.INGV | 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous | en |
dc.subject.INGV | 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous | en |
dc.identifier.doi | 10.4401/ag-5344 | en |
dc.description.obiettivoSpecifico | 3.6. Fisica del vulcanismo | en |
dc.description.obiettivoSpecifico | 4.3. TTC - Scenari di pericolosità vulcanica | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Bilotta, G. | en |
dc.contributor.author | Russo, G. | en |
dc.contributor.author | Herault, A. | en |
dc.contributor.author | Del Negro, C. | en |
dc.contributor.department | Università di Catania, Dipartimento di Matematica e Informatica, Catania, Italy | en |
dc.contributor.department | Università di Catania, Dipartimento di Matematica e Informatica, Catania, Italy | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.orcid | 0000-0002-1406-4545 | - |
crisitem.author.orcid | 0000-0001-5734-9025 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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Bilotta et al 2011.pdf | 708.33 kB | Adobe PDF | View/Open |
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