Εμφάνιση απλής εγγραφής

dc.creatorSarris, I. E.en
dc.creatorIatridis, A. I.en
dc.creatorDritselis, C. D.en
dc.creatorVlachos, N. S.en
dc.date.accessioned2015-11-23T10:47:01Z
dc.date.available2015-11-23T10:47:01Z
dc.date.issued2010
dc.identifier10.1063/1.3291074
dc.identifier.issn1070-6631
dc.identifier.urihttp://hdl.handle.net/11615/32894
dc.description.abstractResults of direct numerical simulations are presented for the transient and turbulent natural convection cooling of an initially isothermal quiescent liquid metal placed in a vertical cylinder in the presence of a vertical magnetic field. The electrically conductive low-Prandtl number fluid is put to motion when the cylindrical wall is suddenly cooled to a uniform lower temperature. For this particular cooling process, the flow is characterized by three sequential almost discrete stages: (a) development of momentum and thermal boundary layers along the cylindrical cold wall, (b) intrusion of the cooled fluid into the main fluid body, and (c) flow and thermal stratification. The selected Rayleigh numbers in the present study are high enough so that turbulent convection is established. The numerical results show that the magnetic field has no observable effect at the initial stage of the vertical boundary layer development and conduction heat transfer is favored during the intrusion stage. An interesting effect of the magnetic field during the stratification stage is the deceleration of the cooling process for low Rayleigh numbers and its acceleration for high ones. This dependence of the magnetic field effect on the Rayleigh number was found to be related to the cold vortices emanating from the vertical boundary layer. In contrast with the hydrodynamic cooling, the magnetic field was also found to accelerate the cooling near the bottom of the cylinder.en
dc.source.uri<Go to ISI>://WOS:000274180800036
dc.subjectboundary layer turbulenceen
dc.subjectconvectionen
dc.subjectflow simulationen
dc.subjecthydrodynamicsen
dc.subjectmagnetohydrodynamicsen
dc.subjectnumerical analysisen
dc.subjectDIRECT NUMERICAL-SIMULATIONen
dc.subjectMHD NATURAL-CONVECTIONen
dc.subjectREYNOLDS-NUMBERen
dc.subjectTURBULENCEen
dc.subjectCAVITYen
dc.subjectFLOWSen
dc.subjectHEATen
dc.subjectENCLOSUREen
dc.subjectMechanicsen
dc.subjectPhysics, Fluids & Plasmasen
dc.titleMagnetic field effect on the cooling of a low-Pr fluid in a vertical cylinderen
dc.typejournalArticleen


Αρχεία σε αυτό το τεκμήριο

ΑρχείαΜέγεθοςΤύποςΠροβολή

Δεν υπάρχουν αρχεία που να σχετίζονται με αυτό το τεκμήριο.

Αυτό το τεκμήριο εμφανίζεται στις ακόλουθες συλλογές

Εμφάνιση απλής εγγραφής