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Energies
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Numerical Simulation of Thermofluid Dynamics
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Numerical Simulation of Thermofluid Dynamics

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: closed (20 January 2022) | Viewed by 7212

Special Issue Editor

Prof. Dr. Mohamed F. El-Amin

E-Mail Website
Guest Editor
College of Engineering, Effat University, Jeddah 21478, Saudi Arabia
Interests: heat and mass transfer; transport in porous media; computational and applied mathematics; computational fluid dynamics (CFD); reservoir simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

I invite you to submit your original research or overview papers to this Special Issue on the “Numerical Simulation of Thermofluid Dynamics”, in Energies.

Many engineering and environmental sciences research topics concentrate on combining flow, heat/mass transfer and thermodynamics aspects. Turbulent, multicomponent, multiphase flows, phase change, combustion, transient microscale, fluid stability and thermal energy systems are all areas of interest in thermofluid dynamics. Thermofluid dynamics are challenging to model and numerically simulate because of their complexities. On the other hand, much work remains to improve modeling and calculation algorithms and achieve robust simulators that incorporate essential physics. Similarly, due to the models' complexity, computational aspects such as optimization techniques, stability analysis and error prediction are challenging to perform. Finally, the prediction of thermofluid dynamics using machine/deep learning techniques is considered a hot subject. Therefore, the enhancement of modeling capabilities and numerical algorithms related to thermofluid dynamics is still highly needed.

This Special Issue has been proposed to highlight recent advancements in thermofluid dynamics modeling and simulation. We invite researchers to submit original research and review papers in the context of new ideas and current research to this Special Issue.

Potential topics mainly include (but are not limited to):

  • Modeling and simulation of thermofluid systems;
  • New numerical algorithms for thermofluid dynamics;
  • Heat and mass transfer in thermofluid dynamics;
  • Stability analysis of thermofluid systems;
  • Error analysis and solution properties of thermofluid dynamics;
  • Interaction of thermofluids and solid mechanics;
  • Thermodynamics calculations of thermofluid dynamics;
  • Spectral methods for molecular and thermofluid flows;
  • Machine/deep learning techniques for thermofluid dynamics;
  • Technical fluid flows and combustion;
  • Thermal multiphase multicomponent flows;
  • Physical/mathematical aspects of thermofluid flows.
  • Multiscale modeling of thermofluid dynamics.

Prof. Dr. Mohamed F. El-Amin
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. Energies 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

  • Modeling and simulation of thermofluid systems
  • New numerical algorithms for thermofluid dynamics
  • Heat and mass transfer in thermofluid dynamics
  • Stability analysis of thermofluid systems
  • Error analysis and solution properties of thermofluid dynamics
  • Interaction of thermofluids and solid mechanics
  • Thermodynamics calculations of thermofluid dynamics
  • Spectral methods for molecular and thermofluid flows
  • Machine/deep learning techniques for thermofluid dynamics
  • Technical fluid flows and combustion
  • Thermal multiphase multicomponent flows
  • Physical/mathematical aspects of thermofluid flows
  • Multiscale modeling of thermofluid dynamics

Published Papers (3 papers)

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Research

19 pages, 5129 KiB  
Article
Experimental Investigations and Modeling of Atmospheric Water Generation Using a Desiccant Material
by Ahmed Almasarani, Imtiaz K. Ahmad, Mohamed F. El-Amin and Tayeb Brahimi
Energies 2022, 15(18), 6834; https://0-doi-org.brum.beds.ac.uk/10.3390/en15186834 - 19 Sep 2022
Cited by 5 | Viewed by 1566
Abstract
Harvesting atmospheric water by solar regenerated desiccants is a promising water source that is energy-efficient, environmentally clean, and viable. However, the generated amounts of water are still insignificant. Therefore, more intensive fundamental research must be undertaken involving experiments and modeling. This paper describes [...] Read more.
Harvesting atmospheric water by solar regenerated desiccants is a promising water source that is energy-efficient, environmentally clean, and viable. However, the generated amounts of water are still insignificant. Therefore, more intensive fundamental research must be undertaken involving experiments and modeling. This paper describes several experiments, which were conducted to predict and improve the behavior of water absorption/desorption by the Calcium Chloride (CaCl2) desiccant, where the uncertainty did not exceed ±3.5%. The absorption effect in a deep container was studied experimentally and then amplified by pumping air into the solution. The latter measured water absorption/desorption by a thin solution layer under variable ambient conditions. Pumping air inside deep liquid desiccant containers increased the water absorption rate to 3.75% per hour, yet when using a thin layer of the solution, it was found to have increased to 6.5% per hour under the same conditions. The maximum amount of absorbed water and water vapor partial pressure relation was investigated, and the mean absolute error between the proposed formula and measured water content was 6.9%. An empirical formula, a one-dimensional mathematical model, was then developed by coupling three differential equations and compared to experimental data. The mean absolute error of the model was found to be 3.13% and 7.32% for absorption and desorption, respectively. Governing mathematical conservation equations were subsequently formulated. The mathematical and empirical models were combined and solved numerically. Findings obtained from the simulation were compared to experimental data. Additionally, several scenarios were modeled and tested for Jeddah, Saudi Arabia, under various conditions. Full article
(This article belongs to the Special Issue Numerical Simulation of Thermofluid Dynamics)
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19 pages, 9588 KiB  
Article
Experimental and Numerical Study of a Two-Stage Swirl Burner
by Jiming Lin, Haozhen Li, Yong Zhang and Jianhong Yang
Energies 2022, 15(3), 1097; https://0-doi-org.brum.beds.ac.uk/10.3390/en15031097 - 01 Feb 2022
Cited by 3 | Viewed by 2246
Abstract
In this study, we developed the design process and optimization of structural parameters of a new low-NOx burner based on low-NOx combustion technology and the flame stabilization principle. Firstly, on the basis of the two-stage swirl burner, we applied the fuel-graded [...] Read more.
In this study, we developed the design process and optimization of structural parameters of a new low-NOx burner based on low-NOx combustion technology and the flame stabilization principle. Firstly, on the basis of the two-stage swirl burner, we applied the fuel-graded combustion technology and introduced the central nozzle structure to explore the influence law of graded combustion on NOx emissions. Secondly, on the previously optimized structure, the matching law between the first- and second-stage cyclone blades is analyzed to obtain the optimum structural design solution for heat exchange efficiency and flame front length. Finally, a new conical blunt structure is introduced in conjunction with the flame stabilization principle, and we discuss the effects of different half cone angles on the flame stabilization, flame front length, and heat exchange efficiency of the burner. The research in this paper provides a reliable direction for the design optimization of low-NOx burners. Full article
(This article belongs to the Special Issue Numerical Simulation of Thermofluid Dynamics)
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21 pages, 2170 KiB  
Article
Modeling of Water Generation from Air Using Anhydrous Salts
by Shereen K. Sibie, Mohamed F. El-Amin and Shuyu Sun
Energies 2021, 14(13), 3822; https://0-doi-org.brum.beds.ac.uk/10.3390/en14133822 - 25 Jun 2021
Cited by 8 | Viewed by 2509
Abstract
The atmosphere contains 3400 trillion gallons of water vapor, which would be enough to cover the entire Earth with a one-inch layer of water. As air humidity is available everywhere, it acts as an abundant renewable water reservoir, known as atmospheric water. The [...] Read more.
The atmosphere contains 3400 trillion gallons of water vapor, which would be enough to cover the entire Earth with a one-inch layer of water. As air humidity is available everywhere, it acts as an abundant renewable water reservoir, known as atmospheric water. The efficiency of an atmospheric water harvesting system depends on the sorption capacities of water-based absorption materials. Using anhydrous salts is an efficient process in capturing and delivering water from ambient air, especially under a condition of low relative humidity, as low as 15%. Many water-scarce countries, like Saudi Arabia, receive high annual solar radiation and have relatively high humidity levels. This study is focused on the simulation and modeling of the water absorption capacities of three anhydrous salts under different relative humidity environments: copper chloride (CuCl2), copper sulfate (CuSO4), and magnesium sulfate (MgSO4), to produce atmospheric drinking water in water-scarce regions. By using a mathematical model to simulate water absorption, this study attempts to compare and model the results of the current computed model with the laboratory experimental results under static and dynamic relative humidities. This paper also proposes a prototype of a system to produce atmospheric water using these anhydrous salts. A sensitivity analysis was also undertaken on these three selected salts to determine how the uniformity of their stratified structures, thicknesses, and porosities as applied in the mathematical model influence the results. Full article
(This article belongs to the Special Issue Numerical Simulation of Thermofluid Dynamics)
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