A new method of relating a chord length distribution to a bubble size distribution for vertical bubbly flows

2015 ◽  
Vol 71 ◽  
pp. 23-31 ◽  
Author(s):  
N.H. Hoang ◽  
D.J. Euh ◽  
B.J. Yun ◽  
C.-H. Song
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Length Distribution ◽  
Bubble Size Distribution ◽  
Chord Length ◽  
New Method ◽  
Bubbly Flows ◽  
Chord Length Distribution

General method for the transformation of chord-length data to a local bubble-size distribution

AIChE Journal ◽  
1996 ◽  
Vol 42 (10) ◽  
pp. 2713-2720 ◽  
Author(s):  
Weidong Liu ◽  
Nigel N. Clark ◽  
Ali Ihsan Karamavruc
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Chord Length ◽  
Local Bubble ◽  
Length Data ◽  
General Method

scholarly journals Prediction of Pore Volume Dispersion and Microstructural Characteristics of Concrete Using Image Processing Technique

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1476
Author(s):  
Dhanalakshmi K ◽  
Maheswaran. J ◽  
Siva Avudaiappan ◽  
Mugahed Amran ◽  
Radhamanohar Aepuru ◽  
...  
Keyword(s):  
Image Processing ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Pore Volume ◽  
Length Distribution ◽  
Chord Length ◽  
Image Processing Technique ◽  
Micro Ct ◽  
Chord Length Distribution

Concrete has served an essential role in many infrastructural projects. Factors including pore percentage, pore distribution, and cracking affect concrete durability. This research aims to better understand pore size distribution in cement-based materials. Micro-computed tomography (micro-CT) pictures were utilised to characterise the interior structure of specimens without destroying them. The pore dispersion of the specimens was displayed in 3D, utilising the data and imaging techniques collected, and the pore volume dispersion was examined using a volume-based approach. Another way to describe heterogeneous pore features is the chord-length distribution, which was calculated from three-dimensional micro-CT scans and correlated with the traditional method. The collected specimens were subjected to physical and mechanical testing. In addition, image processing techniques were used to conduct the studies. The results showed that the chord-length distribution-based pore size distribution is very successful than the traditional volume-based technique. The acquired data could be used for research and to forecast the characteristics of the materials.

scholarly journals Estimation of particle size distribution and aspect ratio of non-spherical particles from chord length distribution

2015 ◽  
Vol 123 ◽  
pp. 629-640 ◽  
Author(s):  
Okpeafoh S. Agimelen ◽  
Peter Hamilton ◽  
Ian Haley ◽  
Alison Nordon ◽  
Massimiliano Vasile ◽  
...  
Keyword(s):  
Particle Size ◽  
Aspect Ratio ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Length Distribution ◽  
Chord Length ◽  
Spherical Particles ◽  
Chord Length Distribution

scholarly journals Chord length distribution to particle size distribution

AIChE Journal ◽  
2016 ◽  
Vol 62 (12) ◽  
pp. 4215-4228 ◽  
Author(s):  
Ajinkya V. Pandit ◽  
Vivek V. Ranade
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Length Distribution ◽  
Chord Length ◽  
Chord Length Distribution

Numerical Simulation of Heterogeneous Bubbly Flow in a Bubble Column

2006 ◽  
Author(s):  
Munenori Maekawa ◽  
Naoki Shimada ◽  
Kouji Kinoshita ◽  
Akira Sou ◽  
Akio Tomiyama
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Column ◽  
Fluid Model ◽  
Bubbly Flow ◽  
Bubble Size Distribution ◽  
Bubbly Flows ◽  
Bubble Coalescence ◽  
Size Distributions ◽  
Bubble Sizes

Numerical methods for predicting heterogeneous bubbly flows are indispensable for the design of a Fisher-Tropsh reactor for GTL (Gas To Liquid). It is necessary to take into account bubble size distribution determined by bubble coalescence and breakup for the accurate prediction of heterogeneous bubbly flows. Hence we implemented several bubble coalescence and breakup models into the (N+2) field model, which is a hybrid combination of an interface tracking method and a multi-fluid model. Void and bubble size distributions in an open rectangular bubble column were measured and compared with predicted ones. As a result, the following conclusions were obtained: (1) Void and bubble size distributions were not affected by inlet bubble sizes because the bubble size distribution reaches an equilibrium state at which the birth rate is equal to the death rate, and (2) the combination of Luo’s bubble breakup model and a coalescence model consisting of Prince & Blanch’s model and Wang’s wake entrainment model gave good predictions.

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