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Fluid Mechanics in Sustainable Energy and Environment
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Fluid Mechanics in Sustainable Energy and Environment

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Engineering and Science".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4404

Special Issue Editor

Dr. Anindityo Patmonoaji

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Tokyo Institute of Technology, 2-12-1-I6-33, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
Interests: fluid mechanics; multiphase flow; transport phenomena; porous media; petroleum recovery; carbon capture and sequestration; groundwater contamination and decontamination; renewable energy; geological energy storage

Special Issue Information

Dear Colleagues,

With the imminent threat from climate change, we have to work together as a civilization to solve this matter. The Paris Agreement in 2015 outlined the need to reduce the amount of CO2 emission, which is our resolve as a civilization to overcome this matter and to realize sustainable energy and environments for our communities. As researchers, our roles are to support this movement by providing insights and guiding communities through evidence-based approaches and scientific thinking from our expertise.

 

Fluid mechanics plays an important role in various engineering applications to support our goal of sustainable energy and environments. It is the base knowledge in the field of energy generation from various renewable energy resources, such as water turbines, wind turbines, wave turbines, energy from saline and fresh water mixing, and geothermal energy. It is also the fundamental knowledge in the field of environmental conservation, such as freshwater resources, water pollution transport, groundwater contamination, and groundwater decontamination. Moreover, fluid mechanics serves as an important field in reducing CO2 emission through the implementation of novel technology of carbon capture and sequestration, production of blue hydrogen, hydrogen storage, and geological energy storage. Therefore, studies on the roles of fluid mechanics in sustainable energy and environments are needed to support our goals in conforming to the Paris Agreement target to reduce CO2 emission and to realize sustainable energy and environments for our society.

 

We are pleased to invite you to contribute to this Special Issue in Sustainability, an MDPI journal. This Special Issue focuses on the broad and numerous topics on the roles of fluid mechanics in sustainable energy and environments. The following topics are welcomed, but the focus of this Special Issue is not limited to them:

  • Fluid statics;
  • Fluid kinematics;
  • Fluid dynamics;
  • Multiphase flow;
  • Transport phenomena;
  • Computational fluid dynamics;
  • Lattice Boltzmann methods;
  • Carbon capture and sequestration;
  • Wind energy;
  • Wave energy;
  • Energy from saline and fresh water mixing;
  • Geothermal energy;
  • Enhanced oil recovery;
  • Hydrogen storage;
  • Geological energy storage;
  • Pollution transport;
  • Groundwater contamination;
  • Groundwater decontamination.

Accordingly, this Special Issue is open for the following types of manuscripts covering the whole breadth of fluid mechanics in sustainable urban and rural development issues and concerns: original research articles, review articles, and technical reports.

Dr. Anindityo Patmonoaji
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. Sustainability 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 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

  • fluid statics
  • fluid kinematics
  • fluid dynamics
  • multiphase flow
  • transport phenomena
  • computational fluid dynamics
  • lattice Boltzmann methods
  • carbon capture and sequestration
  • wind energy
  • wave energy
  • energy from saline and fresh water mixing
  • geothermal energy
  • enhanced oil recovery
  • hydrogen storage
  • geological energy storage
  • pollution transport
  • groundwater contamination
  • groundwater decontamination

Published Papers (2 papers)

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Research

23 pages, 19412 KiB  
Article
Steady and Unsteady Flow Characteristics inside Short Jet Self-Priming Pump
by Hao Yu, Chuan Wang, Guohui Li, Hongliang Wang, Yang Yang, Shaohui Wu, Weidong Cao and Shanshan Li
Sustainability 2023, 15(18), 13643; https://doi.org/10.3390/su151813643 - 12 Sep 2023
Cited by 3 | Viewed by 951
Abstract
Due to their great efficiency and minimal loss, self-priming jet pumps are frequently employed in a variety of sectors for sustainable development. A short jet self-priming pump’s steady and unsteady flow characteristics are investigated numerically in this study using a standard k-ε turbulence [...] Read more.
Due to their great efficiency and minimal loss, self-priming jet pumps are frequently employed in a variety of sectors for sustainable development. A short jet self-priming pump’s steady and unsteady flow characteristics are investigated numerically in this study using a standard k-ε turbulence model. The precision and dependability of the numerical calculations used in this work are demonstrated by the less than 2% difference between the pump performance data from the numerical calculation and the external characteristics test results for each flow condition. It was found that due to the perpendicularity of the nozzle axis to the impeller axis, the high-flow velocity zone in the nozzle gradually deviates to the side away from the impeller under high-flow conditions. Backflow is generated on the side close to the impeller, where eccentric vortices are created. As time progresses, the asymmetry of the low-pressure zone within the impeller becomes more pronounced under high-flow conditions, and the fluid is unable to form a stable vortex structure at a specific location. This is an important cause of impeller vibration and noise. The nonlinear vibration at the impeller inlet is less periodic, while the increase in flow rate can make the nonlinear vibration generated within the impeller more regular and stable. This reflects the fact that the fluid flow at small flow rates is more likely to be affected by the blade configuration and the shape of the flow channel, which leads to fluid instability and discontinuity. For various flow rates, the main frequency of the pressure pulsation is higher at the impeller intake (W1) than it is in the impeller channel (W2~7). Additionally, the pressure pulsation is more frequent before 10 times the rotational frequency, with no significant regularity. This suggests that the impeller and injector rear chamber dynamic and static interference impacts may have some bearing on the pressure pulsation. The pressure pulsation coefficients (W2~7) in the impeller at different flow rates show an exponentially decreasing trend with the increase of multiples of five in the rotation frequency. The equations for the relationship between CP and 5NF were obtained, respectively: CP-Q1 = 0.07044 × exp(−0.2372NF), CP-Q3 = 0.06776 × exp(−0.2564 NF), CP-Q5 = 0.07005 × exp(−0.2884 NF). The findings of this study contribute to understanding the flow inhomogeneities inside the pump as well as the analysis of the internal pump vibration, enhancing the jet pump’s efficiency and lifespan. Full article
(This article belongs to the Special Issue Fluid Mechanics in Sustainable Energy and Environment)
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17 pages, 4013 KiB  
Article
Integration of Photodegradation Process of Organic Micropollutants to a Vertically One-Dimensional Lake Model
by Guo Chen, Zhongyu Guo and Chihiro Yoshimura
Sustainability 2023, 15(3), 2082; https://doi.org/10.3390/su15032082 - 21 Jan 2023
Viewed by 1560
Abstract
Photochemical reactions in the water environments are essential for understanding the fate of organic pollutants, which exist widely in aquatic environments causing potential risks. Therefore, this study aimed to integrate a module of the photodegradation process into a vertically one-dimensional model of the [...] Read more.
Photochemical reactions in the water environments are essential for understanding the fate of organic pollutants, which exist widely in aquatic environments causing potential risks. Therefore, this study aimed to integrate a module of the photodegradation process into a vertically one-dimensional model of the lake to quantify the influence of phytoplankton on the photodegradation process for the first time. After adjusting the code of the APEX (Aqueous Photochemistry of Environmentally occurring Xenobiotics), the suite of photochemical reactions was integrated into the pollutant module of MyLake (Multi-year Lake simulation), as MyLake-Photo. This integrated model was then applied to calculate the concentration of four organic micropollutants under the ranges of solar radiation conditions (0–390 W/m2), phytoplankton biomass (0.01–20 mg/m3 of chlorophyll), and water temperature (1–25 °C). These scenario analyses revealed that phytoplankton biomass and pollutant photodegradation are negatively correlated owing to the light absorption by chlorophyll. Thermal stratification also significantly influenced the vertical distribution of organic micropollutants. Then, the model was applied for calculating a temporal distribution of ibuprofen concentration in Lake Giles (PA, USA) with a simple but realistic assumption. The concentration of organic micropollutants varies with seasons, which was mainly affected by the changes in irradiance and water temperature. In this manner, the integrated model is capable of estimating the temporal and vertical shifts of the concentration of organic micropollutants in lakes, allowing us to investigate the fate of organic micropollutants in lakes. The integrated model also allows us to investigate the effect of phytoplankton and CDOM on the photodegradation of organic micropollutants, which should be combined with field surveys and experimental studies for further improvement. Full article
(This article belongs to the Special Issue Fluid Mechanics in Sustainable Energy and Environment)
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