| EPSRC Reference: |
GR/S78117/01 |
| Title: |
New Closure Strategies for Modelling Flame Stabilization of Turbulent Jet Flames |
| Principal Investigator: |
Kronenburg, Professor A |
| Other Investigators: |
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| Department: |
Mechanical Engineering |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 2005 |
Ends: |
31 December 2005 |
Value (£): |
43,191
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Energy |
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Summary on Grant Application Form |
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Conditional Moment Closure (CMC) methods are among the most promising combustion sub-models that are based on sound theoretical derivations with a high degree of universality. However, CMC predictions of piloted, turbulent non-premixed flames need improvement. Current CMC of turbulent jet flames is based on shear layer approximations and hence, cross-stream averaged conditional moments. Le. CMC cannot account for important flame stabilization methods like pilot- or swirl stabilization. In the proposed study, the use of the shear layer approximation will be questioned and potential errors will be quantified. Ample evidence suggests that conditional moments of scalar dissipation and velocity are markedly altered due to the presence of the pilot and shear layer approximations will not hold. Models that account for the correct mixture fraction dependence of scalar dissipation and conditional velocity will be investigated and implemented. The improved CMC model will be applied to turbulent jet diffusion flames with varying Reynolds numbers and results will be compared with experimental data. It will be shown that CMC offers an economic alternative to the computationally much more expensive Unsteady Flamelet-Large Eddy Simulations (LES/ULF) or PDF/Monte Carlo methods when pilot stabilized turbulent jet flames need be modelled.
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Key Findings |
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Potential use in non-academic contexts |
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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 |
| Summary |
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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.imperial.ac.uk |