سال انتشار: ۱۳۸۴

محل انتشار: دهمین کنگره ملی مهندسی شیمی ایران

تعداد صفحات: ۱۱

نویسنده(ها):

Rahimi – Department of Chemical Engineering, Sistan and Baluchestan University
Salehi – Department of Chemical Engineering, Sistan and Baluchestan University
Zivdar – Department of Chemical Engineering, Sistan and Baluchestan University
Shahraki – Department of Chemical Engineering, Sistan and Baluchestan University

چکیده:

In this research, we have attempted to validate a transient, three-dimensional dynamic Eulerian-Eulerian two-phase model for the modeling of bubble column hydrodynamics in the homogeneous flow regime. The turbulence in liquid phase is considered by k-ε model. Further numerical studies investigate the influence of additional turbulence production through the dispersed gas phase. The experimental data, which is taken from P.Spicka et al (2002) works literature that was obtained via particle image velocimetry, allow for the validation of the model simulation. The comparison between experimental data and CFD modeling focus on the local axial liquid velocity. The simulations are done using Fluent CFD software. Reasonably, good quantitative agreement is obtained between the experimental data and simulations profiles that will expect for the turbulent kinetic energy and the other variables profiles. Employing finer grids impr oves the description of the flow structure in the bubble
column and the agreement with the experimental data. However, the computation power increases significantly and a compromise between efficiency and quality of results has to be found.