Effects of Joule heating on EHD-enhanced natural convection in an enclosure

Author

Yang, H. ; Lai, F.C.

Author_Institution

Sch. of Aerosp. & Mech. Eng., Oklahoma Univ., Norman, OK, USA

Volume

3

fYear

1997

fDate

5-9 Oct 1997

Firstpage

1851

Abstract

Electrohydrodynamically enhanced natural convection in an enclosure is numerically examined in this paper with a particular interest on the effects of Joule heating. Attention has also been focused on the stability of the flow and temperature fields under the influence of an electric field. Calculations have covered a wide range of parameters, i.e., 10⩽V₀⩽17.5 kV and 10⁹⩽Ra⩽10⁶. Results which include the transient variation of isotherm and streamline patterns as well as a parameterization of the Nusselt vs. Rayleigh number relation in terms of the electrical field conditions are presented

Keywords

electric fields; electrohydrodynamics; flow instability; heating; natural convection; temperature distribution; thermal analysis; EHD-enhanced natural convection; Joule heating; Nusselt vs. Rayleigh number relation; electric field conditions; enclosure; flow field stability; isotherm patterns; streamline patterns; temperature field stability; transient variation; Aerospace engineering; Corona; Current density; Differential equations; Electrodes; Heat transfer; Maxwell equations; Resistance heating; Temperature; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.626307

Filename

626307