Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.7
3.5
Journals
Processes
Special Issues
Numerical Calculation and Experimental Measurement in Multiphase Flow
share announcement

Numerical Calculation and Experimental Measurement in Multiphase Flow

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

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 4487

Special Issue Editors

Dr. Gholamreza Kefayati

E-Mail Website
Guest Editor
School of Engineering, University of Tasmania, Hobart Tasmania, TAS 7001, Australia
Interests: CFD; heat and mass transfer; nanofluid; MHD; ferrofluid; non-Newtonian fluid
Special Issues, Collections and Topics in MDPI journals
Dr. Hasan Sajjadi

E-Mail Website1 Website2
Guest Editor
Department of Mechanical Engineering, Faculty of Engineering, University of Bojnord, Bojnord 9415615458, Iran
Interests: particle motion; LBM; heat and mass transfer; multiphase flow
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The topic of multiphase flows is receiving significant attention due to their many applications in nature and engineering, such as in air conditioning, oil production, power plants, fluidized bed, flows in porous media, boiling and many other systems. The most common class of multiphase flows are two-phase flows, and these include gas-liquid flow, gas-solid flow, liquid-liquid flow and liquid-solid flow. These flows are the most studied, particularly in the context of the industry. Three common approaches are mainly used to study multiphase flows: theoretical analysis, experiments and numerical methods.  Due to the rapid development of computers, computational fluid dynamics (CFD) methods have been widely used in recent years as these methods have the advantages of safety, a high efficiency and low cost. This Special Issue on “Numerical Calculation and Experimental Measurement in Multiphase Flow” seeks high-quality research that focuses on the latest novel CFD methods and experiments in two-phase flows for various applications. Topics include, but are not limited to:

  • Heat and mass transfer in porous media;
  • Particle dispersion and deposition;
  • Melting of phase-change material(PCM);
  • Non-Newtonian fluids;
  • Two-phase flows.

Dr. Gholamreza Kefayati
Dr. Hasan Sajjadi
Guest Editors

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

  • multiphase flow
  • CFD
  • experimental measurement
  • porous media
  • PCM
  • non-newtonian fluids

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

17 pages, 12047 KiB  
Article
Mixing Characteristics and Parameter Effects on the Mixing Efficiency of High-Viscosity Solid–Liquid Mixtures under High-Intensity Acoustic Vibration
by Xiaobin Zhan, Lei Yu, Yalong Jiang, Qiankun Jiang and Tielin Shi
Processes 2023, 11(8), 2367; https://doi.org/10.3390/pr11082367 - 06 Aug 2023
Cited by 1 | Viewed by 1216
Abstract
High-intensity acoustic vibration is a new technology for solving the problem of uniform dispersion of highly viscous materials. In this study, we investigate the mixing characteristics of high-viscosity solid–liquid phases under high-intensity acoustic vibration and explore the effect of vibration parameters on the [...] Read more.
High-intensity acoustic vibration is a new technology for solving the problem of uniform dispersion of highly viscous materials. In this study, we investigate the mixing characteristics of high-viscosity solid–liquid phases under high-intensity acoustic vibration and explore the effect of vibration parameters on the mixing efficiency. A numerical simulation model of solid–liquid–gas multiphase flow, employing the volume of fluid (VOF) and discrete phase model (DPM), was developed and subsequently validated through experimental verification. The results show that the movement and deformation of the gas–liquid surface over the entire field are critical for achieving rapid and uniform mixing of the solid–liquid phases under acoustic vibration. Increasing the amplitude or frequency of vibration can intensify the movement and deformation of the free surface of gas and liquid, improve the mixing efficiency, and shorten the mixing time. Under the condition of constant acceleration, the mixing efficiency of materials is higher at low frequency and high amplitude. Further, we define a relationship that predicts desirable mixing conditions as a function of amplitude and frequency. This serves as a valuable reference guide for evaluating the minimum requirements when selecting operating parameters. Full article
(This article belongs to the Special Issue Numerical Calculation and Experimental Measurement in Multiphase Flow)
►▼ Show Figures

Figure 1

25 pages, 7304 KiB  
Article
Seismic Response of Cable-Stayed Spanning Pipeline Considering Medium-Pipeline Fluid–Solid Coupling Dynamic Effect
by Guangyuan Weng, Qixuan Xie, Chenxi Xu, Peng Zhang and Xiang Zhang
Processes 2023, 11(2), 313; https://doi.org/10.3390/pr11020313 - 18 Jan 2023
Cited by 6 | Viewed by 1134
Abstract
With the aim of determining the influence of the fluid–structure coupling dynamic effect of the oil and gas transmission medium and pipeline on the seismic response, an oil pipeline supported by a cable-stayed spanning structure was taken as the study object. Kinetic equations [...] Read more.
With the aim of determining the influence of the fluid–structure coupling dynamic effect of the oil and gas transmission medium and pipeline on the seismic response, an oil pipeline supported by a cable-stayed spanning structure was taken as the study object. Kinetic equations taking into account the action of oil and gas medium were studied, and a finite element model structure considering the additional-mass method and the fluid–structure coupling effect were established separately. In addition, the mechanism of the oil–gas–pipeline coupling action on the seismic response of pipeline structure was analyzed, and the results were obtained. The results show that the pipeline has a minimal seismic response at the abutment location, the seismic response gradually increases along the abutment to the main tower, and the seismic response reach is maximized at about one-fifth of the bridge platform. The seismic response of the oil and gas pipeline model structure using the additional-mass method is generally more significant than that based on the fluid–solid coupled dynamic model; moreover, the maximum displacement response differs by about 24%, and the maximum acceleration response differs by approximately 30%, indicating that the oil and gas medium has a certain viscoelastic damping effect on the seismic response of the oil pipeline, which provides a reference for the seismic response calculation theory and analysis method of cable-stayed spanning oil pipelines. Full article
(This article belongs to the Special Issue Numerical Calculation and Experimental Measurement in Multiphase Flow)
►▼ Show Figures

Figure 1

12 pages, 3590 KiB  
Article
An Experimental Study of Wall Effect on a Hot Settling Sphere in a Newtonian-Fluid-Contained Block Using Photography
by Mojtaba Ashouri, Mohammad Hasan Kayhani and Mohsen Nazari
Processes 2023, 11(1), 248; https://doi.org/10.3390/pr11010248 - 12 Jan 2023
Viewed by 1518
Abstract
In this study, the effect of temperature on the velocity and trajectory of a hot sphere falling in a water block was experimentally investigated. The sphere, 12 mm in diameter, was thrown through the water inside an enclosure at the ambient temperature by [...] Read more.
In this study, the effect of temperature on the velocity and trajectory of a hot sphere falling in a water block was experimentally investigated. The sphere, 12 mm in diameter, was thrown through the water inside an enclosure at the ambient temperature by an electromagnetic attachment mechanism, and the particle velocity was recorded by a high-speed camera at 2000 fps. Then, using an image-processing algorithm, the real-time particle location was extracted and its velocity was measured. The results of the cold sphere falling test were compared with those obtained from the numerical solving by the governing equations. An electric heater was used to heat the sphere up to 100, 200, and 300 °C in order to investigate the effect of temperature on the sphere. The sphere was thrown upon reaching the desired temperature. By increasing the temperature, the sphere’s velocity was increased up to around 40% of the velocity of the cold sphere. Further, the sphere was thrown from a point in the vicinity of the wall to investigate the wall impact on the particle movement. This led the sphere to deviate from its trajectory, with the deviation in the cold sphere being negligible, i.e., around 30% of the sphere’s diameter. However, the rate of deviation was much more notable upon increasing the temperature. The deviation start point varied depending on the sphere’s temperature, with the highest deviation that was observed for a sphere with a temperature of 100 °C. Ultimately, the sphere traveled in a more extended way, with no deviation from the main trajectory, when its temperature was increased. Full article
(This article belongs to the Special Issue Numerical Calculation and Experimental Measurement in Multiphase Flow)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop