An algorithm for LES of premixed compressible flows using the Conditional Moment Closure model |
| |
| Authors: | B Thornber RW Bilger AR Masri ER Hawkes |
| |
| Institution: | 1. Fluid Mechanics and Computational Science Group, Dept. Aerospace Science, Cranfield University, UK;2. Thermofluids, School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Australia;3. School of Photovoltaic and Renewable Energy Engineering/School of Mechanical and Manufacturing Engineering, The University of New South Wales, Australia |
| |
| Abstract: | A novel numerical method has been developed to couple a recent high order accurate fully compressible upwind method with the Conditional Moment Closure combustion model. The governing equations, turbulence modelling and numerical methods are presented in full. The new numerical method is validated against direct numerical simulation (DNS) data for a lean premixed methane slot burner. Although the modelling approaches are based on non-premixed flames and hence not expected to be valid for a wide range of premixed flames, the predicted flame is just 10% longer than that in the DNS and excellent agreement of mean mass fractions, conditional mass fractions and temperature is demonstrated. This new numerical method provides a very useful framework for future application of CMC to premixed as well as non-premixed combustion. |
| |
| Keywords: | Conditional Moment Closure Large Eddy Simulation Compressible Combustion Premixed Turbulent combustion Non-premixed |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
