Results 1 to 10 of about 61,875 (120)

Prediction of Bubble Size Distribution in a Batch Foaming System of Polystyrene-Supercritical CO2 [PDF]

علوم و تکنولوژی پلیمر, 2023
Hypothesis: One of the existing challenges in the foam production industry is to achieve the desired mechanical and thermal insulation properties required, which are directly related to cellular density, size, and distribution of bubbles.
Amir Fadaei, Mohamad Hosein Navid Famili, Mahdi Salami Hosseini   +2 more
doaj   +1 more source

Bubble Size Distribution In Gas-Liquid Dispersion Column

Journal of Engineering, 2023
The present work investigates the effect of; superficial air velocities of: 1, 3, and 6 cm/s for two types of perforated distributor on hydrodynamic characteristic in a gas-liquid dispersion column of; air-water, and airaqueous-n-propanol solution ...
Thamer J. Mohammed, Fadi Z. Hanna, Ihsan B. Hamawand   +2 more
doaj   +1 more source

Passive Acoustic Method in Bubble Size Distribution Determination [PDF]

MATEC Web of Conferences, 2020
The paper is considering existing methods for determining the gas phase hydrodynamic properties in liquid medium. This paper presents a passive hydroacoustic method for determining the air bubbles size distribution in water.
Gavrilev Stepan, Ivanov Mikhail
doaj   +1 more source

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

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

Inversion of Volume Scattering Function for Estimation of Bubble Size Distribution in Ocean Waters

IEEE Access, 2021
Angular distribution of the intensity of light scattered by a spherical air bubble in the oceanic medium is distinctive near the critical scattering angle region, when light interacts with a bubble with a refractive index less than its surrounding medium.
Bhogeswara Rao Angara, Palanisamy Shanmugam, Harishankar Ramachandran   +2 more
doaj   +1 more source

Effect of Operating Parameters on the Coalescence and Breakup of Bubbles in a Multiphase Pump Based on a CFD-PBM Coupled Model

Journal of Marine Science and Engineering, 2022
When the multiphase pump is running, the internal medium often exists as bubble flow. In order to investigate the bubble occurrence characteristics in the pressurization unit of the multiphase pump more accurately, this paper couples computational fluid ...
Sijia Tao, Guangtai Shi, Yexiang Xiao, Zongliu Huang, Haigang Wen   +4 more
doaj   +1 more source

Size Distribution and Mean Diameter of Microbubbles in Different Types of Ejector Bubble Generators [PDF]

Journal of Applied Fluid Mechanics
This study investigates the influence of air discharge on bubble size distribution across various types of bubble generators. Air discharge rates were adjusted between 0.1 lpm and 1.0 lpm for ejector, ejector-barrier plate, and venturi bubble generators,
I. Catrawedarma, S. Ton, D. Dwi Pranowo, F. Surahmanto   +3 more
doaj   +1 more source

Gas Bubble Dynamics During Methane Hydrate Formation and its Influence on Geophysical Properties of Sediment Using High-Resolution Synchrotron Imaging and Rock Physics Modeling

Frontiers in Earth Science, 2022
Gas bubble in aquatic sediments has a significant effect on its geophysical and geomechanical properties. Recent studies have shown that methane gas and hydrate can coexist in gas hydrate–bearing sediments.
B. N. Madhusudhan, S. K. Sahoo, F. Alvarez-Borges, F. Alvarez-Borges, S. Ahmed, L. J. North, A. I. Best   +6 more
doaj   +1 more source

Flotation bubble size distribution rules with ultrasonic radiation

矿业科学学报, 2018
By a self-made ultrasonic flotation experimental device and image processing method,flotation micro-bubble size distribution and the relationship between rising velocity and size has been investigated under different ultrasonic frequencies (28 kH、60 kHz ...
Wang Weidong, Zhang Nan
doaj   +1 more source