Stably stratified exact coherent structures in shear flow: the effect of Prandtl number
- Submitting institution
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University of Dundee
- Unit of assessment
- 12 - Engineering
- Output identifier
- 42251195
- Type
- D - Journal article
- DOI
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10.1017/jfm.2019.811
- Title of journal
- Journal of Fluid Mechanics
- Article number
- A10
- First page
- -
- Volume
- 882
- Issue
- -
- ISSN
- 0022-1120
- Open access status
- Exception within 3 months of publication
- Month of publication
- November
- Year of publication
- 2019
- URL
-
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- Supplementary information
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- Request cross-referral to
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- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
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2
- Research group(s)
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-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- Simulating oceanographic flows is challenging due to salt’s large Prantdl number, leading to massive resolution requirements. An alternative is to compute exact coherent structures, states around which full flow simulations evolve. We found exact coherent structures in vertically sheared stratified flow which have internal density interfaces; such interfaces are widely known to exist in the ocean, but this is the first time an exact solution containing these interfaces has been found.
Our exact coherent structures are the highest resolution structures computed in fluid flow to date; their computation required approximately 400GB of memory and a bespoke code was developed.
- Author contribution statement
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- Non-English
- No
- English abstract
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