Flow features of a new fluidic oscillator using time-resolved PIV measurement and 3D numerical simulation

2021 ◽  
Vol 136 (9) ◽  
Author(s):  
Mahdi Nili-Ahmadabadi ◽  
Hadi Samsam-khayani ◽  
Shabnam Mohammadshahi ◽  
Dae-Seung Cho ◽  
Kyung Chun Kim
Keyword(s):  
Numerical Simulation ◽  
3D Numerical Simulation ◽  
Time Resolved ◽  
Fluidic Oscillator ◽  
Piv Measurement ◽  
Flow Features

3D numerical simulation of local scouring under hydrographs

2013 ◽  
Vol 166 (3) ◽  
pp. 120-131 ◽  
Author(s):  
Amir Ahmad Dehghani ◽  
Taymaz Esmaeili ◽  
Wen-Yi Chang ◽  
Navid Dehghani
Keyword(s):  
Numerical Simulation ◽  
3D Numerical Simulation

The Time-Resolved Internal and External Flow Field Properties of a Fluidic Oscillator

2014 ◽  
Author(s):  
Sarah Gaertlein ◽  
Rene Woszidlo ◽  
Florian Ostermann ◽  
C. Nayeri ◽  
Christian O. Paschereit
Keyword(s):  
Flow Field ◽  
External Flow ◽  
Time Resolved ◽  
Fluidic Oscillator

3D Numerical Simulation of the Process of Draining into a Lock

2013 ◽  
Vol 838-841 ◽  
pp. 1667-1670
Author(s):  
Ming Hua Deng ◽  
Zhu Gao ◽  
Da Wei Mao
Keyword(s):  
Numerical Simulation ◽  
Integral Method ◽  
Full Time ◽  
Inertia Effect ◽  
3D Numerical Simulation ◽  
Precise Estimation ◽  
Practical Engineering ◽  
Order Of Magnitude ◽  
Cfd Method ◽  
Ship Lock

In some textbooks, the Steady-flow Integral Method (SIM) was used to compute the full time of Draining into a Ship Lock, although this method is simple, it only provides a coarse estimation and somehow misleads the students due to approximating the unsteady problem as a steady one and ignoring the inertia effect. The more complex CFD-based model, FLUENT, was used to compensate these shortcomings, the Volume of Fluid (VOF) method was utilized to calculate the free-surface, and the turbulence closure was obtained by the realizable k-ε turbulence model. The values of draining time derived from the two different methods have the same order of magnitude. By CFD, a more precise estimation of the draining time and abundant details about the draining process were obtained. In practical engineering, the geometry of a lock is far more complex than here, the SIM is hard to satisfy the demands for a optimal design, while the CFD method is a nice choice for this purpose.

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