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Processes
Special Issues
Numerical Simulation of Heat and Mass Transfer in Multiphase Flows
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Numerical Simulation of Heat and Mass Transfer in Multiphase Flows

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

Deadline for manuscript submissions: closed (10 October 2023) | Viewed by 2569

Special Issue Editors

Dr. Olga Soloveva

E-Mail Website
Guest Editor
Institute of Heat Power Engineering, Kazan State Power Engineering University, Kazan, Russia
Interests: heat and mass transfer; numerical simulation; porous media; granular filter; aerosol particles; CFD; hydrodynamics
Dr. Sergei Solovev

E-Mail Website
Guest Editor
Institute of Digital Technologies and Economics, Kazan State Power Engineering University, Kazan, Russia
Interests: multiphase flow; numerical simulation; CFD; fluidized bed; chemical reactors; heat and mass transfer; emulsion separation; filtration

Special Issue Information

Dear Colleagues,

The phenomenon of heat and mass transfer in multiphase flows is found in many technical applications. For example, fouling of metal heat exchangers significantly reduces heat transfer and is a particular problem to be studied. Many technological processes in petrochemicals and refineries (e.g., heterogeneous catalysis) proceed with heat and mass transfer when flows interact in different phase states. In industrial power engineering, heating/cooling problems are also relevant in the interaction of phases in different states (e.g., gas–liquid). With the development of numerical methods and increasing computational resources, research at the mesoscale to modify and control model parameters and capture individual micro vortices has become a relevant research topic in heat transfer. Numerical simulations are designed to complement experimental studies and predict flow behaviour with different variations.

This issue focuses on presenting worldwide numerical and experimental studies of heat exchange processes in multiphase flows of various technical and natural systems. Such interdisciplinary work, combining the fundamentals of heat transfer, multiphase mechanics, and numerical methods, is at the peak of modern scientific research and can significantly contribute to the development of new technologies and optimization of technological processes. Experts in the field of heat transfer in multiphase flows are invited to submit review articles, short notes, ongoing research papers to the Special Issue of Processes—"Numerical Simulation of Heat and Mass Transfer in Multiphase Flows".

Dr. Olga Soloveva
Dr. Sergei Solovev
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

  • modelling and simulation
  • numerical methods
  • computational fluid dynamics (CFD)
  • heat transfer in multiphase flow
  • mass transfer in multiphase flow
  • heat exchangers
  • process optimization

Published Papers (2 papers)

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Research

29 pages, 8630 KiB  
Article
The Numerical Investigations of Heat Transfer and Bubble Behaviors of R22 in Subcooled Flow Boiling in Casing Tubes
by Xiaodie Hu, Jinfeng Wang, Jing Xie, Bingjun Wang and Fei Wang
Processes 2023, 11(8), 2357; https://0-doi-org.brum.beds.ac.uk/10.3390/pr11082357 - 05 Aug 2023
Viewed by 1103
Abstract
Amidst the background of “double carbon”, energy saving and emission reduction is a popular direction in the current refrigeration industry. Therefore, the research on the boiling heat transfer of gas–liquid two-phase flow is helpful to strengthen the heat transfer and design a more [...] Read more.
Amidst the background of “double carbon”, energy saving and emission reduction is a popular direction in the current refrigeration industry. Therefore, the research on the boiling heat transfer of gas–liquid two-phase flow is helpful to strengthen the heat transfer and design a more efficient heat exchanger. In this paper, a research method combining numerical simulation and experimental verification is adopted. Firstly, an experimental platform used for the subcooled flow boiling of refrigerant in casing tubes is introduced and experiments are carried out to obtain experimental data, which provides a theoretical basis for the development of numerical simulation and verifies the feasibility of numerical simulation. A numerical model of subcooled flow boiling in R22 was established and the grid independence test was carried out. Based on the simulation results, three factors affecting the boiling heat transfer of R22 are analyzed: First, the boiling heat transfer coefficient of R22 increases with the increase of the mass flow rate of R22, but the increase decreases when the mass flow rate increases from 0.018 kg/s to 0.020 kg/s. Second, the boiling heat transfer coefficient of R22 increases significantly with the increase of hot water flow rate. Third, the influence of R22 subcooling on boiling heat transfer is more complex. When the subcooling is 5 °C and 1 °C, heat transfer can be enhanced; high subcooling at 5 °C can enhance convective heat transfer and low subcooling at 1 °C can accelerate the arrival of saturated boiling. In this paper, three kinds of bubble behaviors affecting heat transfer in supercooled flow boiling, including sliding, polymerization, and bounce are also studied, which provides a basis for further research on heat transfer mechanism of supercooled flow boiling. Full article
(This article belongs to the Special Issue Numerical Simulation of Heat and Mass Transfer in Multiphase Flows)
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14 pages, 4718 KiB  
Article
Three-Dimensional Analysis of the Flow Characteristics Induced by a Cubic Artificial Reef with Diversions
by Haiying Mao, Ziyi Wang, Cong Hu and Kairui Wang
Processes 2023, 11(8), 2304; https://0-doi-org.brum.beds.ac.uk/10.3390/pr11082304 - 01 Aug 2023
Viewed by 803
Abstract
In this paper, the flow characteristics induced by a cubic artificial reef with diversions (DCAR) were investigated using computational fluid dynamics (CFD). The results showed that the design of a DCAR can greatly improve the flow field range compared to typical cubic artificial [...] Read more.
In this paper, the flow characteristics induced by a cubic artificial reef with diversions (DCAR) were investigated using computational fluid dynamics (CFD). The results showed that the design of a DCAR can greatly improve the flow field range compared to typical cubic artificial reefs. The upwelling volume of the DCAR was more than 16 times that of a typical cubic artificial reef. The flow field effect produced the best results when the cut-opening ratio (COR) was 0.1–0.2 with constant flow. The parameters of the upwelling and back vortex increased with an increase in the flow velocity, and it decreased with an increase in the COR. The drag coefficient was less affected by the flow velocity, which remained between 1.32 and 1.44. The new type of artificial reef can improve the flow characteristics around the reefs. Full article
(This article belongs to the Special Issue Numerical Simulation of Heat and Mass Transfer in Multiphase Flows)
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