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On the use of stimulated thermocapillary currents and virtual walls as computational tools for natural convection simulation in enclosed spaces.
- Source :
-
International Journal of Thermal Sciences . Sep2015, Vol. 95, p47-52. 6p. - Publication Year :
- 2015
-
Abstract
- A new, alternative approach is proposed for natural convection simulation by means of stimulated thermocapillary currents created by virtual walls. In contrast to the well-known effective thermal conductivity model, in the proposed approach it is the mass motion due to the convective currents which is intended to be simulated and the heat flux is a consequence of such flows. As a result, no a priori knowledge of the Nusselt number is needed and thus the approach is more suitable for complex geometries. Utilizing a simplified physical model and the definition of hydraulic diameter, a generalized expression for enclosed geometries is derived which offers thermal engineers a powerful analysis tool that can use virtual walls with an associated fictitious Marangoni stress for pre-screening and estimation of Nusselt numbers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 12900729
- Volume :
- 95
- Database :
- Academic Search Index
- Journal :
- International Journal of Thermal Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 102956164
- Full Text :
- https://doi.org/10.1016/j.ijthermalsci.2015.03.013