materials-logo

Journal Browser

Journal Browser

Phase Change, Interphase Coupling, and Multiphase Transport in Porous Structures

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".

Deadline for manuscript submissions: 10 October 2024 | Viewed by 10021

Special Issue Editors

State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing 100083, China
Interests: carbon dioxide geological storage; phase field simulation from transport in porous media; capillary imbibition
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China
Interests: multiphysics process in energy geomechanics
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Interests: integration of hydraulic fracturing and enhanced oil recovery; interwell-fracturing interference
Special Issues, Collections and Topics in MDPI journals
School of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Interests: hydraulic fracturing; fracture propagation simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Multiphase flows and phase-change phenomena are often encountered in many engineering systems, such as CCUS (carbon capture, utilization and storage); the exploitation of oil, natural gas and other underground resources; the utilization of geothermal energy and hydrogen energy, etc. Multiphase flows refer to the interactive flow of distinct phases, and each phase discriminated by common interfaces in a channel represents a mass or volume of matter. Multiphase flows can occur in a single-component or multi-component systems. Possible phase combinations include:

  • Solid–liquid–gas, where solid particles and gas bubbles are mostly dispersed in the liquid;
  • Solid–gas, solid–liquid, and liquid–gas, where the volume fraction of one phase is relative to other results for different flow regimes;
  • Phase change and miscibility phenomena involved in a combination of the above.

Understanding the fundamentals and mechanisms of multiphase transport and phase-change phenomena is continuously needed to develop the relevant technology of engineering applications.

You may choose our Joint Special Issue in Processes.

Dr. Liu Yang
Dr. Haitao Zhang
Dr. Yanjun Zhang
Dr. Bo Wang
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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • phase change
  • interphase coupling
  • multiphase transport

Published Papers (6 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

27 pages, 6951 KiB  
Article
A New 3D Mathematical Model for Simulating Nanofluid Flooding in a Porous Medium for Enhanced Oil Recovery
by Abdullah Al-Yaari, Dennis Ling Chuan Ching, Hamzah Sakidin, Mohana Sundaram Muthuvalu, Mudasar Zafar, Abdurrashid Haruna, Zulkifli Merican Aljunid Merican and Abdus Samad Azad
Materials 2023, 16(15), 5414; https://doi.org/10.3390/ma16155414 - 2 Aug 2023
Cited by 4 | Viewed by 1156
Abstract
Two-phase Darcy’s law is a well-known mathematical model used in the petrochemical industry. It predicts the fluid flow in reservoirs and can be used to optimize oil production using recent technology. Indeed, various models have been proposed for predicting oil recovery using injected [...] Read more.
Two-phase Darcy’s law is a well-known mathematical model used in the petrochemical industry. It predicts the fluid flow in reservoirs and can be used to optimize oil production using recent technology. Indeed, various models have been proposed for predicting oil recovery using injected nanofluids (NFs). Among them, numerical modeling is attracting the attention of scientists and engineers owing to its ability to modify the thermophysical properties of NFs such as density, viscosity, and thermal conductivity. Herein, a new model for simulating NF injection into a 3D porous media for enhanced oil recovery (EOR) is investigated. This model has been developed for its ability to predict oil recovery across a wide range of temperatures and volume fractions (VFs). For the first time, the model can examine the changes and effects of thermophysical properties on the EOR process based on empirical correlations depending on two variables, VF and inlet temperature. The governing equations obtained from Darcy’s law, mass conservation, concentration, and energy equations were numerically evaluated using a time-dependent finite-element method. The findings indicated that optimizing the temperature and VF could significantly improve the thermophysical properties of the EOR process. We observed that increasing the inlet temperature (353.15 K) and volume fraction (4%) resulted in better oil displacement, improved sweep efficiency, and enhanced mobility of the NF. The oil recovery decreased when the VF (>4%) and temperature exceeded 353.15 K. Remarkably, the optimal VF and inlet temperature for changing the thermophysical properties increased the oil production by 30%. Full article
Show Figures

Figure 1

15 pages, 4237 KiB  
Article
Performance Study of a Leaf-Vein-like Structured Vapor Chamber
by Zhihao Zhou, Xu Wang and Yongmin Zhou
Materials 2023, 16(12), 4482; https://doi.org/10.3390/ma16124482 - 20 Jun 2023
Cited by 1 | Viewed by 909
Abstract
As optoelectronic products continue to advance rapidly, the need for effective heat dissipation has become increasingly crucial due to the emphasis on miniaturization and high integration. The vapor chamber is widely used for cooling electronic systems as a passive liquid–gas two-phase high-efficiency heat [...] Read more.
As optoelectronic products continue to advance rapidly, the need for effective heat dissipation has become increasingly crucial due to the emphasis on miniaturization and high integration. The vapor chamber is widely used for cooling electronic systems as a passive liquid–gas two-phase high-efficiency heat exchange device. In this paper, we designed and manufactured a new kind of vapor chamber using cotton yarn as the wick material, combined with a fractal pattern layout of leaf veins. A comprehensive investigation was conducted to analyze the performance of the vapor chamber under natural convection circumstances. SEM showed that many tiny pores and capillaries were formed between the cotton yarn fibers, which are very suitable as the wick material of the vapor chamber. Additionally, experimental findings demonstrated the favorable flow and heat transfer characteristics of the cotton yarn wick within the vapor chamber, which makes the vapor chamber have significant heat dissipation capability, compared to the other two vapor chambers; this vapor chamber has a thermal resistance of only 0.43 °C/W at a thermal load of 8.7 W. In addition, the vapor chamber showed good antigravity capability, and its performance did not show significant changes between horizontal and vertical positions; the maximum difference in thermal resistance at four tilt angles is only 0.06 °C/W. This paper also studied the influence of vacuum degree and filling amount on the performance of the vapor chamber. These findings indicate that the proposed vapor chamber provides a promising thermal management solution for some mobile electronic devices and provides a new idea for selecting wick materials for vapor chambers. Full article
Show Figures

Figure 1

12 pages, 3635 KiB  
Article
Kinetics of Catalytic Oxidation of Methylene Blue with La/Cu Co-Doped in Attapulgite
by Jianping Shang, Wei Zhang, Zhengliang Dong and Hua-Jun Shawn Fan
Materials 2023, 16(5), 2087; https://doi.org/10.3390/ma16052087 - 3 Mar 2023
Cited by 1 | Viewed by 1304
Abstract
Methylene blue (MB) is a common pollutant in wastewater from the printing and dyeing industries. In this study, attapulgite (ATP) was modified with La3+/Cu2+, using the method of equivolumetric impregnation. The La3+/Cu2+ -ATP nanocomposites were characterized [...] Read more.
Methylene blue (MB) is a common pollutant in wastewater from the printing and dyeing industries. In this study, attapulgite (ATP) was modified with La3+/Cu2+, using the method of equivolumetric impregnation. The La3+/Cu2+ -ATP nanocomposites were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The catalytic properties of the modified ATP and the original ATP were compared. At the same time, the influence of the reaction temperature, concentration of methylene blue and pH on the reaction rate were investigated. The optimal reaction conditions are as follows: MB concentration is 80 mg/L, the dosage of the catalyst is 0.30 g, the dosage of hydrogen peroxide is 2 mL, the pH is 10 and the reaction temperature is 50 °C. Under these conditions, the degradation rate of MB can reach 98%. The recatalysis experiment was carried out reusing the catalyst, and the experimental results showed that the degradation rate could reach 65% after three uses, indicating that the catalyst could be recycled many times and costs could be reduced. Finally, the degradation mechanism of MB was speculated, and the reaction kinetic equation was obtained as follows: −dc/dt = 14,044 exp(−3598.34/T)C(O)0.28. Full article
Show Figures

Figure 1

19 pages, 3706 KiB  
Article
Mathematical Model for Oil Recovery Prediction of Polymer Microsphere Conformance Control Based on the Stream Tube Method
by Wenyue Zhao, Huo Tang, Fan Lu, Shuai Hu, Tongjing Liu, Nannan Li and Renzhi Song
Materials 2023, 16(4), 1476; https://doi.org/10.3390/ma16041476 - 9 Feb 2023
Cited by 5 | Viewed by 1327
Abstract
Oil recovery is an essential parameter for reservoir development performance evaluation, but there is no specific research on the theoretical oil recovery prediction model of polymer microspheres (PMs)’ conformance control. This research aims to establish an oil recovery prediction model that depends on [...] Read more.
Oil recovery is an essential parameter for reservoir development performance evaluation, but there is no specific research on the theoretical oil recovery prediction model of polymer microspheres (PMs)’ conformance control. This research aims to establish an oil recovery prediction model that depends on the definition of oil recovery based on stream tube theory. PMs’ enhanced oil recovery mechanism is to plug the pore throat to expand the swept area. The assumption that the stream tube between injection and production wells is trapezoidal is proposed. Based on this premise, the area sweep efficiency equation suitable for the rhombus inverse nine-spot well pattern is established based on the stream tube theory. The vertical sweep efficiency equation is optimized by introducing the equivalent mobility ratio. Additionally, the model’s adaptability and validity are studied. The analysis results show that oil recovery decreases with increasing injection rate, injection concentration, and PMs size but increases with the increasing injection period. The theoretical oil recovery is 1.37%, and the actual oil recovery of the field application is 1.22%, with an error of 0.15%. This model has good consistency with the actual physical process of the field application. The oil recovery prediction model can provide oil recovery and optimize PMs’ conformance control injection scheme. This study fills the gap in the mathematical model for oil recovery prediction of PMs’ conformance control. Full article
Show Figures

Figure 1

16 pages, 4501 KiB  
Article
Optimization of Hexagonal Structure for Enhancing Heat Transfer in Storage System
by Natalia Raźny, Anna Dmitruk, Artur Nemś, Magdalena Nemś and Krzysztof Naplocha
Materials 2023, 16(3), 1207; https://doi.org/10.3390/ma16031207 - 31 Jan 2023
Cited by 2 | Viewed by 1502
Abstract
Thermal performance was tested during cycling work for latent heat storage systems based on KNO3 and NaNO3 (weight ratio 54:46). For heat transfer improvement, cast aluminum honeycomb-shaped structures were produced via 3D printing of polymer model and investment casting. Different wall [...] Read more.
Thermal performance was tested during cycling work for latent heat storage systems based on KNO3 and NaNO3 (weight ratio 54:46). For heat transfer improvement, cast aluminum honeycomb-shaped structures were produced via 3D printing of polymer model and investment casting. Different wall thicknesses were tested at 1.2 mm and 1.6 mm. The obtained results were compared to working cycles of pure PCM bed. The use of enhancers is reported to improve the rate of charging and discharging of the deposit. In the next step, the structures were examined with numerical simulation performed with ANSYS Fluent software. The wall thicknesses taken into consideration were the following: 0.8, 1.2, 1.6, and 2.0 mm. An insert with a greater wall thickness allows for smaller dT/dt and better heat distribution in the vessel. The investment casting process enables the manufacturing of complex structures of custom shapes without porosity and contamination. Full article
Show Figures

Figure 1

Review

Jump to: Research

27 pages, 3481 KiB  
Review
Progress in Research and Application of Graphene Aerogel—A Bibliometric Analysis
by Bowen Chai, Wanlin Zhang, Yuanyuan Liu, Shuang Zhu, Zhanjun Gu and Hao Zhang
Materials 2023, 16(1), 272; https://doi.org/10.3390/ma16010272 - 27 Dec 2022
Cited by 12 | Viewed by 2578
Abstract
In recent years, graphene aerogel (GA) has been widely used as a 3D porous stable network structure material. In order to identify the main research direction of GA, we use the bibliometric method to analyze its hot research fields and applications from the [...] Read more.
In recent years, graphene aerogel (GA) has been widely used as a 3D porous stable network structure material. In order to identify the main research direction of GA, we use the bibliometric method to analyze its hot research fields and applications from the Web of Science database. First, we collected all relevant literature and analyzed its bibliometrics of publication year, country, institution, etc., where we found that China and Chinese Academy of Sciences are the most productive country and institute, respectively. Then, the three hot fields of fabrication, energy storage, and environmental protection are identified and thoroughly discussed. Graphene aerogel composite electrodes have achieved very efficient storage capacity and charge/discharge stability, especially in the field of electrochemical energy storage. Finally, the current challenges and the future development trends are presented in the conclusion. This paper provides a new perspective to explore and promote the related development of GA. Full article
Show Figures

Graphical abstract

Back to TopTop