MODELING OF A PASSIVE SCALAR IN A TURBULENT FREE JET UNDER THE CORIOLIS EFFECT | ||||
| The International Conference on Mathematics and Engineering Physics | ||||
| Article 1, Volume 4, International Conference on Mathematics and Engineering Physics (ICMEP-4), May 2008, Page 1-11 PDF (657.72 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/icmep.2008.29845 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| HASNAOUI M. | ||||
| Department of structures and materials, Air Royal School, Marrakech (Morocco). | ||||
| Abstract | ||||
| ABSTRACT The influence of Coriolis forces is studied in stationary and Sc = 1 (Schmidt number) cases on the tran sport of a passive scalar in a three-dimensional inhomogeneous turbulent free jet. The mean velocity field defines a small parameter U∞ (non-dimensional wind-speed). This parameter governs the asymptotic expansion of the analysis. Using a linear spectral approach, two-point velocity-concentration correlation equations are obtained under some realistic simplifying assumptions. The solution depends on the non-uniform mean concentration gradient. Taking into account swirl characteristics, an expansion of the solution is constructed by means of analytical tools, including the effects of several fundamental physical parameters. The mean concentration gradient field possesses a privileged direction. As application of the model, the spectral components of the solution are determined using further simplifying approximations. Graphical surfaces are drawn: these surfaces show the specific characteristics of mixing in turbulent jets. The results are matched with other results obtained by means of numerical methods and experimental results. | ||||
| Keywords | ||||
| Inhomogeneous turbulence; Coriolis forces; Linear spectral approach; Asymptotic analysis | ||||
|
Statistics Article View: 105 PDF Download: 204 |
||||
