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1. Identity statement
Reference TypeJournal Article
Sitemtc-m16b.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier6qtX3pFwXQZGivnK2Y/QwiRz
Repositorysid.inpe.br/mtc-m17@80/2007/06.21.19.06
Last Update2007:06.21.19.06.45 (UTC) administrator
Metadata Repositorysid.inpe.br/mtc-m17@80/2007/06.21.19.06.46
Metadata Last Update2018:06.05.03.34.20 (UTC) administrator
Secondary KeyINPE--PRE/
ISSN1270-900X
Citation KeyDeriazDomPerSchFar:2007:DiWaCo
TitleDivergence-free Wavelets for Coherent Vortex Extraction in 3D Homogeneous Isotropic Turbulence
Year2007
MonthFebr.
Access Date2024, June 16
Secondary TypePRE PI
Number of Files1
Size763 KiB
2. Context
Author1 Deriaz, Erwan
2 Domingues, Margarete Oliveira
3 Perrier, Valerie
4 Schneider, Kai
5 Farge, Marie
Resume Identifier1
2 8JMKD3MGP5W/3C9JHQP
Group1
2 LAC-INPE-MCT-BR
Affiliation1 Laboratoire de Mod´elisation et Calcul de l’IMAG
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Laboratoire de Mod´elisation et Calcul de l’IMAG
4 MSNM–CNRS & CMI, Universit´e de Provence
5 LMD–CNRS, Ecole Normale Superieure
JournalEsaim: Proceedings
Volume16
Pages146-163
History (UTC)2007-06-29 19:12:18 :: rosemary -> administrator ::
2012-10-23 23:54:17 :: administrator -> simone :: 2007
2013-02-20 15:19:59 :: simone -> administrator :: 2007
2018-06-05 03:34:20 :: administrator -> marciana :: 2007
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
KeywordsWavelets
Isotropic turbulence
COMPUTER SCIENCE
AbstractIn this paper we investigate the use of divergence-free wavelet bases for the Coherent Vortex Extraction (CVE) of turbulent flows. We begin with a short presentation of the construction of 3D divergence-free biorthogonal wavelets. We apply the CVE decomposition to a homogeneous isotropic turbulent flow, computed by a Direct Numerical Simulation (DNS) at resolution 2403 and upsampled to N = 2563. First, the CVE is applied to the vorticity field. Using the divergence-free wavelets for the vorticity field makes sense since the vorticity also verifies an incompressibility condition when the velocity does. The coherent part of the vorticity field is reconstructed from the largest wavelet coefficients, corresponding to 3%N, while the complement constitutes the incoherent part. We show that the coherent part corresponds to the vortex tubes of the flow and retains most of the energy and enstrophy. These results are then compared to those obtained using nondivergent free wavelets, both orthogonal and biorthogonal ones. Then we also apply the CVE method, using divergence-free wavelets, to decompose the velocity field and subsequently compute the corresponding vorticity fields. The results show that the decomposition of velocity exhibit large smooth vortex structures in contrast to what is obtained with the decomposition of the vorticity.
AreaCOMP
Arrangementurlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAC > Divergence-free Wavelets for...
doc Directory Contentaccess
source Directory Contentthere are no files
agreement Directory Contentthere are no files
4. Conditions of access and use
data URLhttp://urlib.net/ibi/6qtX3pFwXQZGivnK2Y/QwiRz
zipped data URLhttp://urlib.net/zip/6qtX3pFwXQZGivnK2Y/QwiRz
Languageen
Target FileDivergence-free.pdf
User Groupadministrator
rosemary
Visibilityshown
Archiving Policyallowpublisher allowfinaldraft
Read Permissionallow from all
5. Allied materials
Next Higher Units8JMKD3MGPCW/3ESGTTP
Citing Item Listsid.inpe.br/mtc-m21/2012/07.13.14.55.24 1
DisseminationPORTALCAPES
Host Collectionlcp.inpe.br/ignes/2004/02.12.18.39
cptec.inpe.br/walmeida/2003/04.25.17.12
6. Notes
Empty Fieldsalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel documentstage doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype
7. Description control
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