UFR 1-06 Best Practice Advice
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Axisymmetric buoyant far-field plume in a quiescent unstratified environment
Underlying Flow Regime 1-06
Best Practice Advice
Best Practice Advice for the UFR
Key Physics
The key physics to be captured in this UFR is the self-similar behaviour of a spreading axisymmetric buoyant plume.
Numerical Modelling Issues
- The flow can be treated as axisymmetric.
- For a grid-independent resolution of the George et al. [3] plume, at least (40 × 100) grid nodes should be used in the (radial × axial) directions. At least 10 nodes should be used radially to resolve the plume source.
- Discretization schemes should be at least second-order accurate.
- For further advice on boundary conditions, see Test Case
Physical Modelling
Application Uncertainties
Recommendations for further work
Contributed by: Simon Gant — Lea Associates
© copyright ERCOFTAC 2010