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| Content Provider | Springer Nature Link |
|---|---|
| Author | Rees, D. Andrew S. Postelnicu, Adrian Bassom, Andrew P. |
| Copyright Year | 2007 |
| Abstract | Free convection plumes usually rise vertically, but do not do so when in an asymmetrical environment. In such cases they are susceptible to a thermoconvective instability because warmer fluid lies below cooler fluid in the upper half of the plume. We analyse the behaviour of streamwise vortex disturbances in plumes that are close to being vertical. The linearised equations subject to the boundary layer approximation are parabolic and are solved using a marching method. Our computations indicate that disturbances tend to be centred in the upper half of the plume. A neutral curve is determined and an asymptotic theory is developed to describe the right hand branch of this curve. The left hand branch is not amenable to an asymptotic analysis, and it is found that the onset of convection for small wavenumbers is very sensitively dependent on both the profile of the initiating disturbance and where it is introduced. |
| Starting Page | 221 |
| Ending Page | 238 |
| Page Count | 18 |
| File Format | |
| ISSN | 01693913 |
| Journal | Transport in Porous Media |
| Volume Number | 74 |
| Issue Number | 2 |
| e-ISSN | 15731634 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2008-01-08 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Free convection Line source Plume Vortex instability Mechanics, Fluids, Thermodynamics Hydrogeology Civil Engineering Industrial Chemistry/Chemical Engineering Geotechnical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Catalysis |
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