CFD modelling of flow patterns, tortuosity and residence time distribution in monolithic porous columns reconstructed from X-ray tomography data

2018 ◽  
Vol 350 ◽  
pp. 757-766 ◽  
Author(s):  
S. Pawlowski ◽  
N. Nayak ◽  
M. Meireles ◽  
C.A.M. Portugal ◽  
S. Velizarov ◽  
...  
Keyword(s):  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Flow Patterns ◽  
Cfd Modelling ◽  
X Ray ◽  
Tomography Data

scholarly journals Modelling of Fluid Flow and Residence Time Distribution in a Five-strand Tundish

2020 ◽  
Author(s):  
Dong-Yuan Sheng ◽  
Qiang Yue
Keyword(s):  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Volume Fraction ◽  
Fluid Dynamic ◽  
Flow Characteristics ◽  
Passive Scalar ◽  
Control Device ◽  
Dead Volume ◽  
Cfd Modelling

The quantified residence time distribution (RTD) provides a numerical characterization of mixing in the continue casting tundish, thus allowing the engineer to better understand the metallurgical performance of the reactor. This paper describes a computational fluid dynamic (CFD) modelling study for analyzing the flow pattern and the residence time distribution in a five-strand tundish. Two passive scalar transport equations are applied to separately calculate the E-curve and F-curve in the tundish. The numerical modelling results are compared to the water modelling results for the validation of the mathematical model. The volume fraction of different flow regions (plug, mixed and dead) and the intermixing time during the ladle changeover are calculated to study the effects of the flow control device (FCD) on the tundish performance. The result shows that a combination of the U-baffle with deflector holes and the turbulence inhibitor has three major effects on the flow characteristics in the tundish: i) reduce the extent of the dead volume; ii) evenly distribute the liquid streams to each strand and iii) shorten the intermixing time during the ladle changeover operation.

scholarly journals A new methodology for measurement of sludge residence time distribution in a paddle dryer using X-ray fluorescence analysis

2015 ◽  
Vol 69 ◽  
pp. 1-8 ◽  
Author(s):  
Christophe Charlou ◽  
Mathieu Milhé ◽  
Martial Sauceau ◽  
Patricia Arlabosse
Keyword(s):  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Fluorescence Analysis ◽  
X Ray

Residence Time Distribution for Evaluating Flow Patterns and Mixing Actions of Rice Extruded with Thermostable α-Amylase

2017 ◽  
Vol 10 (6) ◽  
pp. 1015-1030 ◽  
Author(s):  
Enbo Xu ◽  
Zhengzong Wu ◽  
Jingpeng Li ◽  
Xiaowei Pan ◽  
Yan Sun ◽  
...  
Keyword(s):  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Flow Patterns

scholarly journals A novel technique for residence time distribution (RTD) measurements in solids unit operations

2021 ◽  
Vol 32 (2) ◽  
pp. 611-618
Author(s):  
Atena Dehghani Kiadehi ◽  
Mikel Leturia ◽  
Franco Otaola ◽  
Aissa Ould-Dris ◽  
Khashayar Saleh
Keyword(s):  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Novel Technique ◽  
Unit Operations
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