| DOI | Resolve DOI: https://doi.org/10.1115/GT2007-27017 |
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| Author | Search for: Jiang, L. Y.1ORCID identifier: https://orcid.org/0009-0008-0777-7919; Search for: Campbell, Ian1 |
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| Affiliation | - National Research Council Canada. NRC Institute for Aerospace Research
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| Format | Text, Article |
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| Conference | ASME Turbo Expo 2007 - Power for Land, Sea and Air, May 14-17, 2007, Montreal, Quebec, Canada |
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| Subject | Reynolds anlogy; turbulent scalar transfer; combustor modeling; schmidt number; prandti number |
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| Abstract | Accurate temperature prediction is vital for the development of advanced combustion systems. The Reynolds analogy concept has been almost exclusively used in current turbulent reacting flow RANS simulations. In this paper, this hypothesis applied to a diffusion flame model combustor is discussed and assessed. Some of the numerical results obtained from a flamelet combustion model with the turbulence Prandtl/Schmidt number from 0.25 to 0.85 are presented, and compared with a benchmark experimental database. It is found that the turbulence Prandtl/Schmidt number has significant effect on the predicted temperature and species fields inside the combustor, as well as the temperature profile at the combustor wall. In contrast, its effect on the velocity field is insignificant in the range assessed. With the optimized turbulence Prandtl/Schmidt number, both velocity and scalar fields can be reasonably and quantitatively predicted. For the present configuration and operating conditions, the optimal Prandtl/Schmidt number is 0.5, lower than the commonly accepted values, ∼0.70. This study suggests that for accurate prediction of scalar transfers in turbulent reacting flows, the Reynolds analogy concept should be improved and new approaches should be developed. |
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| Publication date | 2007-06 |
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| Publisher | American Society of Mechanical Engineers (ASME) |
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| In | |
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| Peer reviewed | Yes |
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| NRC number | GTL-2007-0006 |
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| NPARC number | 8933892 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 57052910-3ba8-47af-bcc4-aa1ffb1b7d77 |
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| Record created | 2009-04-23 |
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| Record modified | 2025-11-18 |
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