Comparison of submodels for conditional velocity and scalar dissipation in CMC simulation of piloted jet and bluff-body flames
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk, 790-784 (Korea)
- Power Generation Research Lab, Korea Electric Power Research Institute, Daejeon, 305-380 (Korea)
No meaningful difference is observed between the predictions with the conditional velocity modeled by linear scaling and gradient diffusion assumption for the test flames under consideration. The AMC and Girimaji's model for CSDR show similar results, while the pdf integration method results in an asymmetric profile with some deviation from the other two. The difference tends to decrease as mixing proceeds, to result in a lower level of scalar dissipation at downstream locations. Reasonable agreement is achieved with measured scalar dissipation rates at different axial locations for the Sandia Flame D, while direct comparison is difficult due to radially averaged pdfs and no measured scalar dissipation rates being available for the Sydney bluff-body flame.
- OSTI ID:
- 20999341
- Journal Information:
- Combustion and Flame, Vol. 152, Issue 1-2; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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