|
|
|
|
modeling longitudinal and transverse velocity profiles upstream of an orifice using the flow-3d model
|
|
|
|
|
|
|
|
نویسنده
|
naderi soraya ,daryaee mehdi ,kashefipour seyed mahmoud ,zayeri mohamadreza
|
|
منبع
|
علوم و مهندسي آبياري - 2021 - دوره : 44 - شماره : 2 - صفحه:1 -9
|
|
چکیده
|
The current study investigated the longitudinal flow velocity profile upstream of an orifice for different water depths using the flow3d model. experimental design was used along with les, laminar, and turbulence models to calibrate the model. the obtained results indicated that turbulence models had almost high and equal accuracy for predicting longitudinal velocity profiles. for various depths upstream of the orifice, the general form of the longitudinal velocity profile followed an exponential function with high accuracy. moreover, at largerdistance upstream of the orifice, the transverse velocity profile became uniform. eventually, it was found that with the rise in the depth upstream of the orifice by eight times, the shear stress created on the bed increased by 148%.
|
|
کلیدواژه
|
flushing ,orifice ,turbulence model ,shear stress
|
|
آدرس
|
shahid chamran university of ahvaz, faculty of water and environmental engineering, department of water structures, iran, shahid chamran university of ahvaz, faculty of water and environmental engineering, department of water structures, iran, shahid chamran university of ahvaz, faculty of water and environmental engineering, department of water structures, iran, shahid chamran university of ahvaz, faculty of water and environmental engineering, department of water structures, iran
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Modeling Longitudinal and Transverse Velocity Profiles Upstream of an Orifice Using the FLOW-3D Model
|
|
|
|
|
Authors
|
Naderi Soraya ,Daryaee Mehdi ,Kashefipour Seyed Mahmoud ,Zayeri MohamadReza
|
|
Abstract
|
The current study investigated the longitudinal flow velocity profile upstream of an orifice for different water depths using the FLOW3D model. Experimental design was used along with LES, Laminar, and turbulence models to calibrate the model. The obtained results indicated that turbulence models had almost high and equal accuracy for predicting longitudinal velocity profiles. For various depths upstream of the orifice, the general form of the longitudinal velocity profile followed an exponential function with high accuracy. Moreover, at largerdistance upstream of the orifice, the transverse velocity profile became uniform. Eventually, it was found that with the rise in the depth upstream of the orifice by eight times, the shear stress created on the bed increased by 148%.
|
|
Keywords
|
Flushing ,orifice ,Turbulence model ,Shear Stress
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|