Results 21 to 30 of about 11,312 (266)
Nuclear Engineering and Technology, 2023 To study oscillation characteristic of steam and non-condensable gas direct contact condensation through multi-hole sparger at low mass flux, a series of experiments of pure steam and mixture gas condensation have been carried out under the conditions of
Dandi Zhang, Lili Tong, Xuewu Cao
doaj +1 more source
3D Simulation and Validation of a Lab Scale Bubble Column
Chemical Engineering Transactions, 2015 Bubble columns are widely used in the chemical, petrochemical and biochemical industry. The correct prediction of the fluid dynamics, gas hold-up and bubble size distribution is of importance for the design and development of such reactors.
T. Eppinger, H. Matheus, R. Aglave
doaj +1 more source
Digital Chemical EngineeringBubble columns are omnipresent in the chemical, bio-chemical, petrochemicals, petroleum industries, but their design and scale-up is complex owing to its complex hydrodynamics. Liquid velocity and gas holdup is one of the critical hydrodynamic parameters
Vishal Dhakane +2 more
doaj +1 more source
EXPERIMENTAL STUDY OF LIQUID DISPERSION IN BUBBLE COLUMN
Diyala Journal of Engineering Sciences, 2008 The main object of this study is to investigate the influence of column diameter and superficial gas velocity on liquid phase dispersion coefficients (axial and radial dispersion coefficients), mixing times, gas holdup, and bubble dynamics (bubble ...
Hayder Abd Al-kaream Muhsin
doaj +1 more source
Numerical Simulation of Poly-Dispersed Bubbly Flow Using a Multi-Fluid Model
Journal of Fluid Science and Technology, 2007 Numerical methods for predicting poly-dispersed bubbly flows in bubble columns are indispensable in the design of bubble column reactors. The objectives of the present study are (1) to experimentally investigate the effects of a bubble size distribution ...
Munenori MAEKAWA +3 more
doaj +1 more source
Numerical Simulation of Hold-up and Velocity Profiles for Two-phase Developed Flows in a Column
Chemical Engineering Transactions, 2021 The purpose of this article is to simulate and analyse two-phase fluid dynamics in a bubble column, through two different numerical approaches, in a fast and effective way, to minimize project costs and increase productivity.
Pâmela Palhares, Reginaldo Guirardello
doaj +1 more source
Liquid-Phase Back mixing in Bubble Columns
Tikrit Journal of Engineering Sciences, 2010 Liquid-phase axial dispersion coefficients have been measured for air-water system in bubble columns of 10, 15 and 30 cm diameter. The experiments are carried out using a transient method (the tracer response method).
Burhan S. Abdulrazzaq
doaj +1 more source
Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley +1 more source
ChemEngineering, 2018 In order to optimize and design new bubbly flow reactors, it is necessary to predict the bubble behavior and properties with respect to the time and location. In gas-liquid flows, it is easily observed that the bubble sizes may vary widely.
Ehsan Askari +2 more
doaj +1 more source
Protocol for quantifying miRNA trafficking across the endosomal membrane
FEBS Open Bio, EarlyView.An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh +2 more
wiley +1 more source