Bodenschatz, Eberhard

[["dc.bibliographiccitation.artnumber","041006"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Physical Review X"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Pumir, Alain"],["dc.contributor.author","Xu, H."],["dc.contributor.author","Boffetta, Guido"],["dc.contributor.author","Falkovich, Gregory"],["dc.contributor.author","Bodenschatz, Eberhard"],["dc.date.accessioned","2018-11-07T09:33:40Z"],["dc.date.available","2018-11-07T09:33:40Z"],["dc.date.issued","2014"],["dc.description.abstract","In statistically homogeneous turbulent flows, pressure forces provide the main mechanism to redistribute kinetic energy among fluid elements, without net contribution to the overall energy budget. This holds true in both two-dimensional (2D) and three-dimensional (3D) flows, which show fundamentally different physics. As we demonstrate here, pressure forces act on fluid elements very differently in these two cases. We find in numerical simulations that in 3D pressure forces strongly accelerate the fastest fluid elements, and that in 2D this effect is absent. In 3D turbulence, our findings put forward a mechanism for a possibly singular buildup of energy, and thus may shed new light on the smoothness problem of the solution of the Navier-Stokes equation in 3D."],["dc.identifier.doi","10.1103/PhysRevX.4.041006"],["dc.identifier.fs","606696"],["dc.identifier.isi","000343773800001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11554"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32019"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/312778/EU//EUHIT"],["dc.relation.issn","2160-3308"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","Redistribution of Kinetic Energy in Turbulent Flows"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","160"],["dc.bibliographiccitation.journal","Journal of Fluid Mechanics"],["dc.bibliographiccitation.lastpage","167"],["dc.bibliographiccitation.volume","698"],["dc.contributor.author","Gibert, Mathieu"],["dc.contributor.author","Xu, H."],["dc.contributor.author","Bodenschatz, Eberhard"],["dc.date.accessioned","2018-11-07T09:10:28Z"],["dc.date.available","2018-11-07T09:10:28Z"],["dc.date.issued","2012"],["dc.description.abstract","We report experimental results on the dynamics of heavy particles of the size of the Kolmogorov scale in a fully developed turbulent flow. The mixed Eulerian structure function of two-particle velocity and acceleration difference vectors was observed to increase significantly with particle inertia for identical flow conditions. We show that this increase is related to a preferential alignment between these dynamical quantities. With increasing particle density the probability for those two vectors to be collinear was observed to grow. We show that these results are consistent with the preferential sampling of strain-dominated regions by inertial particles."],["dc.identifier.doi","10.1017/jfm.2012.72"],["dc.identifier.isi","000302963800009"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9268"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26498"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cambridge Univ Press"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/237521/EU//PTURB"],["dc.relation.issn","0022-1120"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Where do small, weakly inertial particles go in a turbulent flow?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]