Bubble rise characteristics in oscillating grid turbulence

2021 ◽  
Vol 164 ◽  
pp. 106832
Author(s):  
Ning Yao ◽  
Yunping Wang ◽  
Jingting Liu ◽  
Xun Sun ◽  
Zongrui Hao ◽  
...  
Keyword(s):  
Grid Turbulence ◽  
Bubble Rise ◽  
Oscillating Grid

230 Experimental study of rotation effect on vortex structure in oscillating-grid turbulence

2016 ◽  
Vol 2016.65 (0) ◽  
pp. _230-1_-_230-2_
Author(s):  
Masaki MIZUOCHI ◽  
Mitsuhiro KIMURA ◽  
Shinji TAMANO ◽  
Yohei MORINISHI
Keyword(s):  
Experimental Study ◽  
Vortex Structure ◽  
Grid Turbulence ◽  
Rotation Effect ◽  
Oscillating Grid

Lattice Boltzmann simulations of oscillating-grid turbulence

2017 ◽  
Vol 29 (1) ◽  
pp. 68-74 ◽  
Author(s):  
Jin-feng Zhang ◽  
Qing-he Zhang ◽  
Jerome P.-Y Maa ◽  
Guang-quan Qiao
Keyword(s):  
Lattice Boltzmann ◽  
Grid Turbulence ◽  
Lattice Boltzmann Simulations ◽  
Oscillating Grid

Experimental study on oscillating grid turbulence and free surface fluctuation

2012 ◽  
Vol 53 (5) ◽  
pp. 1515-1531 ◽  
Author(s):  
Luca Chiapponi ◽  
Sandro Longo ◽  
Mara Tonelli
Keyword(s):  
Experimental Study ◽  
Free Surface ◽  
Grid Turbulence ◽  
Surface Fluctuation ◽  
Oscillating Grid

Experimental Study on the Drag-Reducing Characteristics in Two-Oscillating Grid Turbulence With Polymer Additives

2016 ◽  
Author(s):  
Yue Wang ◽  
Weihua Cai ◽  
Tong-zhou Wei ◽  
Feng-chen Li ◽  
Li-ming Yao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Kinetic Energy ◽  
Drag Reduction ◽  
Polymer Solution ◽  
Turbulent Kinetic Energy ◽  
Newtonian Fluid ◽  
Reduction Rate ◽  
Grid Turbulence ◽  
Solution Flow ◽  
Oscillating Grid

In this paper, we carried out the experimental study to investigate the polymer effect on two-oscillating grid turbulence based on Particle Image Velocimetry. We chose five different concentrations (25, 50, 100, 150 and 200ppm) of polymer solution flow and the Newtonian fluid flow for comparison at three different grid oscillating frequencies (5, 7.5 and 10Hz). The results showed that comparison with the Newtonian fluid case, the turbulent kinetic energy is much smaller in polymer solution cases. A natural definition for drag reduction rate was proposed based on turbulent kinetic energy. It showed that the maximum drag reduction reaches around 80% and the drag-reducing effect increases as the concentration increases. Finally, proper orthogonal decomposition (POD) was used to extract coherent structures in grid turbulence.

scholarly journals Oscillating-grid turbulence and its applications: a review/ Turbulence de grille oscillante et ses applications: une revue

2007 ◽  
Vol 45 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Jing Yan ◽  
Nian-Sheng Cheng ◽  
Hong-Wu Tang ◽  
Soon Keat Tan
Keyword(s):  
Grid Turbulence ◽  
Oscillating Grid
Sign in / Sign up

Export Citation Format

Share Document