A non-Boussinesq model of mixing in a 2-D closed cavity
Book
·
OSTI ID:445534
- Northeastern Univ., Boston, MA (United States). Dept. of Mechanical, Industrial and Manufacturing Engineering
Mixing of fluids inside a cavity under isothermal and nonisothermal conditions is studied with a two-fluid model. This model involves the solution of separate transport equations for zone-averaged variables of each fluid with allowance for interface transport of momentum and energy. The effects of solutal Grashof number, thermal Grashof number, buoyancy ratio and Prandtl number on the flow field, interface behavior and temporal evolution are considered. The calculations are performed over the parameter range: 1 {le} Gr{sub s} {le} 3.7 {times} 10{sup 5}, 0 {le} Gr{sub T} {le} 7.4 {times} 10{sup 6}, 0 {le} N {le} {proportional_to} and 1 {le} Pr {le} 1,000. The material interface is represented by the contour of volume fraction separating the fluids. Solutal buoyancy predominates over thermal buoyancy for comparable Grashof numbers. The system exhibits asymmetric behavior at low buoyancy ratio and low Prandtl number.
- OSTI ID:
- 445534
- Report Number(s):
- CONF-961105--; ISBN 0-7918-1520-X
- Country of Publication:
- United States
- Language:
- English
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