| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZGivnK2Y/QwiRz |
| Repository | sid.inpe.br/mtc-m17@80/2007/06.21.19.06 |
| Last Update | 2007:06.21.19.06.45 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m17@80/2007/06.21.19.06.46 |
| Metadata Last Update | 2018:06.05.03.34.20 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| ISSN | 1270-900X |
| Citation Key | DeriazDomPerSchFar:2007:DiWaCo |
| Title | Divergence-free Wavelets for Coherent Vortex Extraction in 3D Homogeneous Isotropic Turbulence  |
| Year | 2007 |
| Month | Febr. |
| Access Date | 2024, June 23 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 763 KiB |
| 2. Context | |
| Author | 1 Deriaz, Erwan 2 Domingues, Margarete Oliveira 3 Perrier, Valerie 4 Schneider, Kai 5 Farge, Marie |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JHQP |
| Group | 1 2 LAC-INPE-MCT-BR |
| Affiliation | 1 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 |
| Journal | Esaim: Proceedings |
| Volume | 16 |
| Pages | 146-163 |
| 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 Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | Wavelets Isotropic turbulence COMPUTER SCIENCE |
| Abstract | In 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. |
| Area | COMP |
| Arrangement | urlib.net > LABAC > Divergence-free Wavelets for... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/6qtX3pFwXQZGivnK2Y/QwiRz |
| zipped data URL | http://urlib.net/zip/6qtX3pFwXQZGivnK2Y/QwiRz |
| Language | en |
| Target File | Divergence-free.pdf |
| User Group | administrator rosemary |
| Visibility | shown |
| Archiving Policy | allowpublisher allowfinaldraft |
| Read Permission | allow from all |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ESGTTP |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.55.24 1 |
| Dissemination | PORTALCAPES |
| Host Collection | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal 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 | |
| e-Mail (login) | marciana |
| update | |