Chaotic heat transfer enhancement in periodic 2D and 3D flows

J. C. Leprevost, E. Saatdjian, José P. B. Mota

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Heat transfer between the solid boundaries and a highly viscous fluid in the annular region between two confocal ellipses with circumferencial gliding walls is studied. If the boundaries are displaced at constant angular velocity the heat transfer enhancement is due to the two slender recirculation regions, a Nusselt number of about 1.8 can be attained. However, by an appropriate time periodic modulation, Nusselt numbers of over 2.2 can be reached. The additional enhancement is due here to chaotic advection. This flow has a 3-D counterpart, an axial velocity component, independent of the other 2, is superposed. Heat transfer enhancement, for developped thermal profile, depends on the same parameters plus several others such as the average velocity in the annular region.

Original languageEnglish
Title of host publicationHeat Transfer 1998
EditorsJ. S. Lee
PublisherTaylor and Francis Ltd
Pages291-296
Number of pages6
Volume5
Publication statusPublished - 1998
Event11th International Heat Transfer Conference - KYONGJU
Duration: 23 Aug 199828 Aug 1998

Conference

Conference11th International Heat Transfer Conference
CityKYONGJU
Period23/08/9828/08/98

Keywords

  • CONFOCAL ELLIPSES
  • CYLINDERS

Cite this

Leprevost, J. C., Saatdjian, E., & Mota, J. P. B. (1998). Chaotic heat transfer enhancement in periodic 2D and 3D flows. In J. S. Lee (Ed.), Heat Transfer 1998 (Vol. 5, pp. 291-296). Taylor and Francis Ltd.