Results 21 to 30 of about 104,071 (312)

Prediction of Bubble Sizes in Bubble Columns with Machine Learning Methods [PDF]

Chemie Ingenieur Technik, 2021
AbstractTwo Machine Learning algorithms – LASSO and Random Forest – are applied to derive regression models for the prediction of gas bubble diameters using supervised learning techniques. Experimental data obtained from wire‐mesh sensor (WMS) measurements in a deionized water/air system serve as the data base.
Biessey, Philip (Dr.-Ing.), Bayer, Hakan (M. Sc.), Theßeling, Christin (M. Sc.), Hilbrands, Eske (M. Sc.), Grünewald, Marcus (Prof. Dr.-Ing.)   +4 more
openaire   +2 more sources

Simultaneous Observation of Gas Properties’ Effect on Emulsion Phase Voidage and Bubble Size in Fluidized Catalyst Beds

Journal of Chemical Engineering of Japan, 2023
Many correlations have been proposed for bubble size in fluidized beds, mainly for Geldart B particles. For particles with physical properties suitable for fluidized catalyst beds, the bubble size is significantly affected by gas properties.
Takami Kai, Yuta Hiromori, Yuto Fukami, Susumu Nii   +3 more
doaj   +1 more source

Investigation on the cavitation bubble collapse and the movement characteristics near spherical particles based on Weiss theorem

Ultrasonics Sonochemistry, 2023
In this paper, the cavitation bubble dynamics near two spherical particles of the same size are investigated theoretically and experimentally. According to the Weiss theorem, the flow characteristics and the Kelvin impulse are obtained and supported by ...
Xiaoxiao Zheng, Xiaoyu Wang, Zhiling Ding, Angjun Li, Xuan Lu, Yuning Zhang, Yuning Zhang   +6 more
doaj   +1 more source

Mechanism of Microbubbles and Cavitation Effect on Bubble Breakage in a Venturi Bubble Generator [PDF]

Journal of Applied Fluid Mechanics, 2023
Venturi bubble generators have been extensively studied because of having a simple structure and high foaming efficiency, while producing a uniform bubble size.
Q. Li, X. Guo, D. Z. Ming, M. Lei, J. L. Liu, L. Fang, J. Zhang   +6 more
doaj   +1 more source

Bubble propagation on a rail: a concept for sorting bubbles by size [PDF]

Soft Matter, 2017
We propose a novel method to sort bubbles according to size, which relies on a subtle interaction between viscous and surface tension forces acting on a geometrically confined bubble.
Andrés Franco-Gómez, Alice B. Thompson, Andrew L. Hazel, Anne Juel   +3 more
openaire   +3 more sources

Numerical Analysis of Effect of Initial Bubble Size on Captured Bubble Distribution in Steel Continuous Casting Using Euler-Lagrange Approach Considering Bubble Coalescence and Breakup

Metals, 2020
A mathematic model considering the bubble coalescence and breakup using the Euler-Lagrange approach has been developed to study the effect of the initial bubble size on the distribution of bubbles captured by the solidification shell. A hard sphere model
Weidong Yang, Zhiguo Luo, Nannan Zhao, Zongshu Zou   +3 more
doaj   +1 more source

Research on the collapse characteristics of single cavitation bubble near solid particle by the VOF method

Heliyon, 2023
In this paper, the collapse behavior of a single cavitation bubble at different distances near a solid particle of typical scales is numerically simulated and researched with the volume of fluid (VOF) method.
Fengxia Lyu, Xintong Zhang, Huixin Yuan, Saiyue Han, Ming Tang   +4 more
doaj   +1 more source

Characteristics of Bubbles and Gas Holdup In A Two-Phase Column For Different Liquid Phases [PDF]

Engineering and Technology Journal, 2007
Experimental study of gas holdup (Eg), bubble diameter (dvs) interfacial area(a) m-1, small bubble rise velocity (Ubs), and bubble rise velocity (Ubr) in (0.1mi.d) and (1.5m) high column operated at ambient temperature and pressureconditions.
Auroba. Abdullah
doaj   +1 more source

Effect of ultrasonic frequency and surfactant addition on microcapsule destruction

Ultrasonics Sonochemistry, 2021
In a previous study, we found that cavitation bubbles cause the ultrasonic destruction of microcapsules containing oil in a shell made of melamine resin.
Ayaka Inui, Atsushi Honda, Shohei Yamanaka, Takashi Ikeno, Ken Yamamoto   +4 more
doaj   +1 more source

Applying Imaging Technique to Investigate Effects of Solute Concentrations and Gas Injection Rates on Gas Bubble Generation

Geofluids, 2022
This work investigated the bubble size variation under various aqueous conditions, including saline and surfactant solutions, with different gas injection rates using a commercial bubble analyzer.
Guanxi Yan, Zhixin Cheng, Ye Ma, Alexander Scheuermann, Ling Li   +4 more
doaj   +1 more source