Comparison of Lagrangian tracking schemes to flow over a backward facing step

✍ Scribed by Morgan, A. J. ;Barton, I. E.

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 70 KB
• Volume: 16
• Category: Article
• ISSN: 1069-8299
• DOI: 10.1002/1099-0887(200012)16:12<831::aid-cnm379>3.0.co;2-7

✦ Synopsis

The stochastic Monte Carlo method is an excellent method for the investigation of particle dispersion in a variety of situations, usually it is coupled with the k-turbulence model. Traditionally, an exponential scheme has been employed in order to integrate particle trajectories. Recently, however, a number of schemes have been developed that have been shown to a ord greater accuracy over the standard exponential scheme. Since the improved schemes have so far only been validated against analytical problems, it has been attempted to assess their accuracy when predicting particle e ects on turbulence properties for the problem of ow over a backward facing step. Numerical data resulting from the use of several schemes is compared to experimental data. It is shown that schemes incorporating a predictorcorrector element do not give superior results to the standard exponential scheme. It is considered that this is due to the small time step used as a result of the required grid reÿnement.