817 An Investigation of Influences of Concentration Changes in the Gas Layer on Distributions of O_2 and CO_2 Concentrations in the Blood Layer in an Oxygenator with Computational Fluid Dynamics(1)

2006 ◽  
Vol 2006 (0) ◽  
pp. _817-a_
Author(s):  
Nobumasa Katagiri ◽  
Akio Funakubo ◽  
Tomonori Tsukiya ◽  
Eisuke Tatsumi ◽  
Yoshiyuki Taenaka ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Concentration Changes ◽  
Gas Layer

scholarly journals Laboratory and Computational Fluid Dynamics Investigation of Homogenization in a Tank Stirred by External Pump

2019 ◽  
Vol 64 (4) ◽  
pp. 457-468
Author(s):  
Janka Bobek ◽  
Attila Egedy ◽  
Dóra Rippel-Pethő
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Operating Time ◽  
Experimental Device ◽  
Sampling Point ◽  
Concentration Changes ◽  
The Difference ◽  
Sharp Concentration ◽  
Experimental Fluid ◽  
Stratified Liquid

The scope of this study was to investigate the homogenization of a two-layer stratified liquid in a tank where liquid stirring was achieved by carrying out external recirculation. Furthermore, the aim of the research was to observe the effect of the height of the outlet during the time of mixing one. The experimental fluid was two-layer, density stratified liquid. From the perspective of homogeneity, the effect of the height of the outlet was investigated in laboratory. Moreover, the experimental device was modeled in CFD. In simulation examination, laminar - and k-ε-model were used, and the influence of the outlet position was observed. The difference was remarkable in the first part of the measurement caused by the presence of sharp concentration variation in the tank. After the operating time, the expected homogeneity was fulfilled at the outlet in all cases. Regarding of CFD research, the results suggest that the laminar model is more effective to describe the concentration changes at the sampling point in the tank investigated.

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