Abstract
In this paper a simulation model is presented for the Direct Numerical Simulation (DNS) of heat transport in dispersed gas-liquid two-phase flow using the Front Tracking (FT) approach. Our model extends the FT model developed by van Sint Annaland et al. (2006) to non-isothermal conditions. In FT an unstructured dynamic mesh is used to represent and track the interface explicitly by a number of interconnected marker points. The Lagrangian representation of the interface avoids the necessity to reconstruct the interface from the local distribution of the fractions of the phases and, moreover, allows a direct and accurate calculation of the surface tension force circumventing the (problematic) computation of the interface curvature. The extended model is applied to predict the heat exchange rate between the liquid and a hot wall kept at a fixed temperature. It is found that the wall-to-liquid heat transfer coefficient exhibits a maximum in the vicinity of the bubble that can be attributed to the locally decreased thickness of the thermal boundary layer.
Original language | Undefined |
---|---|
Title of host publication | Conference Proceedings of CFD-2006 |
Place of Publication | Melbourne |
Pages | - |
Number of pages | 7 |
Publication status | Published - 13 Dec 2007 |
Event | Fifth International Conference on CFD in the Process Industries - Melbourne, Australia Duration: 13 Dec 2006 → 15 Dec 2006 |
Conference
Conference | Fifth International Conference on CFD in the Process Industries |
---|---|
Period | 13/12/06 → 15/12/06 |
Other | 13-15 December 2006 |
Keywords
- IR-69260
- METIS-236208