Kazemi E, Zanganeh M, Yeganeh-Bakhtiary A, Houshangi H. Two-Phase Flow Modeling of Bed-Load Transport Using A Lagrangian-Lagrangian Model . Marine Engineering 2012; 7 (14) :71-87
URL:
http://marine-eng.ir/article-1-191-fa.html
1- دانشکده عمران، دانشگاه علم و صنعت ایران
چکیده: (9547 مشاهده)
Bed-load transport is effective on river bed stability and Morphology. Therefore, modeling this phenomenon is very important in the field of hydraulics engineering. Bed-load transport occurs by saltation at low to medium shear stress and by sheet-flow at high shear stress. In the present paper, the hydrodynamics of transport in thesaltationand sheet-flow regimes under unidirectional flow is studied using a Lagrangian model based on I-SPH method. The fluid and sediment phases are modeled separately as Newtonian and non-Newtonian fluids respectively. Fluid-sediment interaction is modeled using drag force to define interaction mechanism. To calibrate and validate the numerical model, the result is compared with experiments. There is a good agreement between them that illustrates the applicability of the present model in the simulation of both saltation and sheet-flow regimes hydrodynamics.
نوع مطالعه:
مقاله پژوهشي |
موضوع مقاله:
هیدروديناميك سازه های ساحلی و فراساحلی دریافت: 1391/3/22 | پذیرش: 1392/7/27
ارسال پیام به نویسنده مسئول