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Journals
Processes
Special Issues
Experiment and Simulation of Granular Flows
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Experiment and Simulation of Granular Flows

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Materials Processes".

Deadline for manuscript submissions: closed (20 April 2022) | Viewed by 2288

Special Issue Editor

Prof. Dr. Chun-Chung Liao

E-Mail Website
Guest Editor
Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 802311, Taiwan
Interests: powder technology; granular flows; handling of particulate; mixing/segregation of granular materials; thermal fluid science; and powder metallurgy.

Special Issue Information

Dear Colleagues,

Granular materials (e.g., coffee beans, nuts, sand, sugar, and rice) are ubiquitous in our daily life. Granular materials can behave like a solid, liquid, or gas depending on the external driven force. Powder technology was also widely applied in industrial processes such as powder metallurgical and milling processes, fluidized bed reactor, chemical looping, food industry, pharmaceutical industry, lithium battery, and additive manufacturing, etc. Granular flows are also ubiquitous in nature (e.g., debris flow, mudflow, landslide, and avalanches). Fundamental research and industrial application studies are both important for understanding the transport properties and segregation mechanisms of granular materials. Granular materials may segregate under external forces because of differences in size, density, and shape, resulting in severe challenges for most industries. Understanding flow behavior and the mixing/segregation mechanism is crucial for improving industrial processes and ensuring high product quality. Granular flows have attracted a lot of attention in the past few decades. Nonetheless, we still lack empirical research on the granular flows. Hence, more experiments and simulation studies are both important to comprehensively understand the granular flows.

This Special Issue entitled “Experiment and Simulation of Granular Flows” aims to develop all aspects of science and technology research on powder and granular materials. Topics include, but are not limited to:

  • Granular flow behaviors
  • Dynamics and transport phenomena of granular materials
  • Particle handling and processing
  • Granular mixing/segregation
  • Fluidization

Prof. Chun-Chung Liao
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • granular flows
  • mixing
  • segregation
  • particle handling and processing
  • transport phenomena
  • powder technology

Published Papers (1 paper)

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Research

11 pages, 1935 KiB  
Article
Effect of Solid Volume Concentration on Rheological Properties of Chengdu Clay Slurry
by Xianjun Ji, Ying Liang and Wenhao Cao
Processes 2022, 10(2), 425; https://0-doi-org.brum.beds.ac.uk/10.3390/pr10020425 - 21 Feb 2022
Cited by 1 | Viewed by 1623
Abstract
The determination of rheological model about the debris flow is the basis of the simulation of mud flow impact distance and sedimentary fan. By using a mcr301 rheometer, rheological experiments of Chengdu clay slurry with different solid volume concentrations were carried out and [...] Read more.
The determination of rheological model about the debris flow is the basis of the simulation of mud flow impact distance and sedimentary fan. By using a mcr301 rheometer, rheological experiments of Chengdu clay slurry with different solid volume concentrations were carried out and the effect of solid volume concentration on shear stress were analyzed. Then the rheological process of Chengdu clay slurry with different solid volume concentration was fitted on the basis of the power law model, the Bingham model and the H–B model. The conclusions are drawn as follows: Chengdu clay mud is a typical shear-thinning non-Newtonian body. The influence of solid concentration on the flow curve is different. When the solid volume concentration is not less than 34% and the shear rate is less than 1.0 s−1, the shear stress increases rapidly as the shear rate increases. Meanwhile, when the shear rate is greater than 1.0 s−1 the shear stress decreases with the increase in the shear rate. When the solid volume concentration is less than 31.6% and the shear rate is less than 1.0 s−1, the shear stress increases with the increase in the shear rate, while when the shear rate is more than 1.0 s−1, the shear stress is less affected by shear rate. In the range of low shear rate (less than 1.0 s−1), the increase amplitude of shear stress (slope of semi logarithmic coordinate flow curve) increases as the solid volume content increases. The flow curve of Chengdu clay mud can be reflected in the whole process by using the Herschel and Bulkley model. It is the best mathematical model to fit the rheological process of Chengdu clay mud. According to the above results, the effect of solid volume concentration on the yield stress of the H–B model is analyzed. Full article
(This article belongs to the Special Issue Experiment and Simulation of Granular Flows)
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