| EPSRC Reference: |
EP/C001214/1 |
| Title: |
Lateral straining of wall-bounded turbulence |
| Principal Investigator: |
Coleman, Professor G |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Faculty of Engineering & the Environment |
| Organisation: |
University of Southampton |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2005 |
Ends: |
30 June 2007 |
Value (£): |
102,219
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
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Summary on Grant Application Form |
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One of the primary challenges faced by turbulence models applied to realistic geometries is the need to accurately predict the behaviour of a turbulent boundary layer as it responds to the perturbations or `extra strains' associated with a sudden downstream change in mean flow conditions. In practice, these extra-strain perturbations tend to occur in combinations, which introduces serious conceptual difficulties when attempting to establish a link between a specific perturbation and how it can best be modeled. We thus propose the work described herein, a numerical study of laterally strained zero-pressure-gradient turbulent boundary layers. This subject is of interest because it isolates a single important feature relevant to many real-world engineering flows, allowing a straightforward connection between its physics and a turbulence model's attempt to capture it. Building on our earlier work with adverse-pressure-gradient boundary layers (EPSRC GR/N20249), we will again perform large-scale numerical experiments using direct numerical simulation (which are unaffected by any turbulence-closure approximations), to create exact results for an idealized time-developing parallel-flow analogue of the actual spatial case. Results will be used to test, and when appropriate suggest improvements to, the performance of common turbulence models applied to lateral straining. This in turn is expected to in due course contribute to overall improvements in engineering predictions of complex turbulent flows.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.soton.ac.uk |