کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5474419 1520649 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical analysis of ventilated cavity flow over a 2-D wall mounted fence
ترجمه فارسی عنوان
تجزیه و تحلیل عددی جریان حفره تهویه شده بر روی دیوار حصار 2 دی دیوار
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی
Ventilated cavity flow over a 2-D wall mounted fence is numerically investigated using a viscous approach. An implicit unsteady compressible solver was used with a RANS k−ω SST turbulence model and VOF approach to capture the cavity interface. The simulations were carried out for a fixed fence height based Froude number and constant outlet pressure. Cavity topology, wall pressure distributions and the resulting hydrodynamic forces were determined as a function of ventilation rate, degree of fence immersion in the oncoming wall boundary layer and degree of confinement of the flow domain. It was found that with an increase in ventilation rate, lift increases and drag decreases resulting in a greater hydrodynamic efficiency (lift to drag ratio) of the fence-wall system. With increase in immersion of the fence in the boundary layer, both lift and drag decreased, while the lift to drag ratio increased. Variation in the degree of confinement had a large influence on the flow, with the reduction in lift and hydrodynamic efficiency observed for the more confined conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 141, 1 September 2017, Pages 143-153
نویسندگان
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