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Applied Sciences
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Applied Hydrodynamics
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Applied Hydrodynamics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Fluid Science and Technology".

Deadline for manuscript submissions: closed (30 December 2022) | Viewed by 4586

Special Issue Editors

Prof. Dr. Jungkyu Ahn

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Guest Editor
Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Korea
Interests: river hydraulics; turbulent modeling; sediment transport
Prof. Dr. Chang Geun Song

E-Mail Website
Guest Editor
Department of Safety Engineering, Incheon National University, Incheon 22012, Korea
Interests: disaster management; safety system; risk analysis; flood and inundation; fluid dynamics
Special Issues, Collections and Topics in MDPI journals
Dr. Inhwan Park

E-Mail Website
Guest Editor
Department of Civil Engineering, Seoul National University of Science and Technology, 232 Gongreung-Ro, Nowon-Gu, Seoul 01811, Korea
Interests: inundation; hydrodynamic model; safety engineering
Dr. Rui M. L. Ferreira

E-Mail Website
Guest Editor
CERIS—Civil Engineering Research and Innovation for Sustainability, 1049-001 Lisbon, Portugal
Interests: fluid mechanics; mechanics of sediment transport; hydraulics; computational hydraulics; experimental methods

Special Issue Information

Dear Colleagues,

Many scientists, engineers, and even mathematicians have been interested in Hydrodynamics because of its complexity and urgentness. It was unveiled not only in a purely scientific way but also in an engineering way because it is our daily life. Mathematical descriptions, physical modeling, numerical modeling, and field measurement were applied to understand the hydrodynamic mechanism to solve our problems from water. Therefore, hydrodynamics is inseparable from our life and we have built our history by applying what we found from hydrodynamics.

We are very glad to ask you to share your new knowledge for this Special Issue, based on the latest knowledge of applications of hydrodynamics. This issue is prepared to provide researchers to share the latest ideas on dynamics behavior and application method of hydraulic phenomena. We hope that this issue contributes to extending our knowledge of this area.

Prof. Dr. Jungkyu Ahn
Prof. Dr. Chang Geun Song
Dr. Inhwan Park
Dr. Rui M. L. Ferreira
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. Applied Sciences 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

  • physical modeling
  • numerical modeling
  • turbulence
  • field measurement
  • river
  • ocean
  • coast
  • lake

Published Papers (3 papers)

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Research

12 pages, 4652 KiB  
Article
Method and Experimental Study of Zeolite Crystal Manipulation Based in Hydrodynamic Forces for Single Crystal Assessment
by Dann De la Torre, Veneranda Garcés-Chávez, Juan De Dios Sanchez-Lopez, Kevin A. O’Donnell, Juan Ivan Nieto-Hipólito and Rosario Isidro Yocupicio-Gaxiola
Appl. Sci. 2023, 13(4), 2699; https://0-doi-org.brum.beds.ac.uk/10.3390/app13042699 - 20 Feb 2023
Viewed by 1072
Abstract
In this work, we report an optofluidic system for manipulation of orientation of zeolite crystals near the bottom of a rectangular cross-sectional, straight, quartz microfluidic channel. Manipulation is accomplished by using two computer-controlled syringe pumps that generate adequate hydrodynamic forces for translation and [...] Read more.
In this work, we report an optofluidic system for manipulation of orientation of zeolite crystals near the bottom of a rectangular cross-sectional, straight, quartz microfluidic channel. Manipulation is accomplished by using two computer-controlled syringe pumps that generate adequate hydrodynamic forces for translation and rotation of crystals. Rotation of a crystal around its longitudinal axis allows us to inspect its four major faces for defects. Coffin-shaped zeolite crystals have been studied by several authors by fixing them to a substrate, using two different crystals to assess the roof and gable orientations. The proposed system permits complete assessment of a single crystal by shifting it between roof and gable orientations; moreover the medium can be controlled. Computational fluid dynamics simulations show that crystals in free motion near the bottom of the channel should move faster than the velocity estimated from video. An opposing force, which prevents the crystals from moving freely, has been calculated in order to match translation velocities from simulations and experiments for three given flow rates. The reported optofluidic system is proposed as a novel tool that we believe will open new possibilities for individual zeolite crystal assessment by manipulation of its orientation and medium control. Full article
(This article belongs to the Special Issue Applied Hydrodynamics)
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21 pages, 2705 KiB  
Article
Improved Calculation Method for Siphon Drainage with Extended Horizontal Sections
by Yingqiu Zhang, Yuequan Shang and Hongyue Sun
Appl. Sci. 2022, 12(19), 9660; https://0-doi-org.brum.beds.ac.uk/10.3390/app12199660 - 26 Sep 2022
Cited by 2 | Viewed by 1796
Abstract
Slope siphon drainage is a convenient and efficient above-ground drainage method that is free of manual power and can effectively maintain the stability of potential landslides and prevent the loss of life and property. The complex engineering topography inevitably requires the use of [...] Read more.
Slope siphon drainage is a convenient and efficient above-ground drainage method that is free of manual power and can effectively maintain the stability of potential landslides and prevent the loss of life and property. The complex engineering topography inevitably requires the use of siphon drains with a total length of more than 150 m and a horizontal section length of more than 80 m, which significantly increases the difficulty of calculating the drainage capacity and thus affects the actual utilization of the project. The traditional siphon flow rate equation does not apply to long-pipe siphon conditions, especially when the lift is close to the limit, and there are significant errors in the calculation results, for which we propose a new calculation method. The proposed method considers both air release and flow-pattern classification. Thirty-six sets of experiments were conducted to validate our proposed calculation method. The results showed that our method not only calculated the siphon flow velocity well but also predicted the main flow pattern in the siphon in the experiment well. Furthermore, the equation for calculating the siphon flow velocity was extended to the siphon operation mode with long horizontal sections. Full article
(This article belongs to the Special Issue Applied Hydrodynamics)
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16 pages, 5895 KiB  
Article
Parallel Accelerated Fifth-Order WENO Scheme-Based Pipeline Transient Flow Solution Model
by Tiexiang Mo and Guodong Li
Appl. Sci. 2022, 12(14), 7350; https://0-doi-org.brum.beds.ac.uk/10.3390/app12147350 - 21 Jul 2022
Cited by 1 | Viewed by 1273
Abstract
The water hammer phenomenon is the main problem in long-distance pipeline networks. The MOC (Method of characteristics) and finite difference methods lead to severe constraints on the mesh and Courant number, while the finite volume method of the second-order Godunov scheme has limited [...] Read more.
The water hammer phenomenon is the main problem in long-distance pipeline networks. The MOC (Method of characteristics) and finite difference methods lead to severe constraints on the mesh and Courant number, while the finite volume method of the second-order Godunov scheme has limited intermittent capture capability. These methods will produce severe numerical dissipation, affecting the computational efficiency at low Courant numbers. Based on the lax-Friedrichs flux splitting method, combined with the upstream and downstream virtual grid boundary conditions, this paper uses the high-precision fifth-order WENO scheme to reconstruct the interface flux and establishes a finite volume numerical model for solving the transient flow in the pipeline. The model adopts the GPU parallel acceleration technology to improve the program’s computational efficiency. The results show that the model maintains the excellent performance of intermittent excitation capture without spurious oscillations even at a low Courant number. Simultaneously, the model has a high degree of flexibility in meshing due to the high insensitivity to the Courant number. The number of grids in the model can be significantly reduced and higher computational efficiency can be obtained compared with MOC and the second-order Godunov scheme. Furthermore, this paper analyzes the acceleration effect in different grids. Accordingly, the acceleration effect of the GPU technique increases significantly with the increase in the number of computational grids. This model can support efficient and accurate fast simulation and prediction of non-constant transient processes in long-distance water pipeline systems. Full article
(This article belongs to the Special Issue Applied Hydrodynamics)
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