Results 61 to 70 of about 2,280 (207)

Quantitative Analysis of Accuracy of Voidage Computations in CFD-DEM Simulations [PDF]

open access: yesThe Journal of Computational Multiphase Flows, 2012
CFD-DEM (Computational Fluid Dynamics – Discrete Element Modelling) is a two-phase flow numerical modelling technique, where the Eulerian method is used for the fluid and the Lagrangian method for the particles. The two phases are coupled by a fluid-particle interaction force (i.e. drag force) which is computed using a correlation. In a two-phase flow,
Khawaja, Hassan Abbas   +3 more
openaire   +2 more sources

Engineering Catalysts at the Multiscale: Past, Present, and Future of Catalyst Manufacturing and Shaping Processes

open access: yesChemCatChem, Volume 18, Issue 1, 15 January 2026.
The image illustrates the journey of catalyst engineering across scales, emphasizing the design, shaping, and manufacturing of technical catalysts. It highlights how hierarchical structuring bridges properties and process innovation, showcasing the continuum between fundamental science and industrial practice that defines modern catalyst engineering ...
Ali M. Alkadhem   +6 more
wiley   +1 more source

Study on the Effect of Low‐Temperature Modified Additives on the Performance of Asphalt and Asphalt Mixture

open access: yesAdvances in Civil Engineering, Volume 2026, Issue 1, 2026.
By testing the basic performance of asphalt before and after adding low‐temperature modified additives, the changes in high‐temperature performance, low‐temperature ductility, viscosity and other indicators of low‐temperature modified asphalt were evaluated, and the optimal dosage of additives for road petroleum asphalt and SBS modified asphalt was ...
Yangpeng Zhang   +6 more
wiley   +1 more source

Time series analysis of voidage signals in a bubbling fluidised bed

open access: yes, 1999
The dynamics of voidage signals in bubbling fluidised beds are investigated both experimentally and numerically. Experimental voidage signals were obtained by using an optical fibre probe at different positions in a freely bubbling fluidised bed of ...
Shen, Chengyu
core   +1 more source

Investigation of liquid distribution in gas–solid fluidized beds for fluid cokers

open access: yesThe Canadian Journal of Chemical Engineering, Volume 103, Issue 8, Page 3983-3998, August 2025.
Abstract Thermal cracking processes convert larger molecules into smaller, more valuable products, without a catalyst, allowing for transforming residual oils or waste plastics into useful compounds. Fluid coking, a thermal cracking process utilizing a fluidized bed of hot particles, processes approximately 1 million barrels of residual oil daily. This
Yohann Cochet   +3 more
wiley   +1 more source

A Review on Reactor Design and Surface Modification of Atomic Layer Deposition for Functional Nanoparticles

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 14, July 25, 2025.
In this review, the fundamentals, main challenges, and reactor configurations spanning temporal atomic layer deposition (ALD) to spatial ALD have been systematically reviewed. Furthermore, applications of surface modification using particle ALD in the fields of energy, catalysis, luminescence, and human health are introduced. This review aims to assist
Guanghui Yan   +6 more
wiley   +1 more source

Voidage assessment of concrete using digital image processing

open access: yes, 2010
This paper describes an objective means of assessing the amount of voidage found within the curved surface of concrete core samples that has been developed by mechanically rolling core samples above a modified flatbed desktop scanner so as to align with
G. True, L. Sear, D. Searle, J. Khatib
core   +1 more source

The transition from the fixed to the fluidized state of well‐mixed binary‐solid mixtures in a liquid upflow

open access: yesAIChE Journal, Volume 71, Issue 7, July 2025.
Abstract In this work, an investigation of the transition from fixed to fluidized state of initially homogeneous binary‐solid mixtures due to an upward liquid flux was carried out. Like for analogous gas systems, it was confirmed that the full transition occurs over a range of fluid velocities, from the initial to the final fluidization velocity. Based
Renzo Di Felice, Filippo Marchelli
wiley   +1 more source

Optimizing Oil Recovery and CO2 Sequestration in Carbonate Reservoirs using Voidage Replacement and Production Balancing Methods

open access: yes, 2023
Replacement of voidage relates to the method of injecting liquids to replace oil, water and gas inside the reservoir. The technique for voidage replacement is the volume of injected fluids in the barrel over the volume they got produced. Injected liquids
Hamdi, Zakaria   +2 more
core   +1 more source

Continuous Trichloroethylene Removal in Internally Recirculating Fluidized Bed of Activated Carbon

open access: yesChemical Engineering &Technology, Volume 48, Issue 7, July 2025.
This work integrates moving bed adsorption and fluidized bed desorption processes in one chemical engineering equipment by using internally recirculating fluidized bed (IRFB) technology. The in‐house‐developed IRFB prototype uses activated carbon as an adsorbent to continuously remove trichloroethylene (known to be mutagenic and a suspected carcinogen)
Prasad A. Dabhade   +3 more
wiley   +1 more source

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