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Water
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Using Computational Fluid Dynamics Techniques Applied to Engineering Systems
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Using Computational Fluid Dynamics Techniques Applied to Engineering Systems

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 4583

Special Issue Editor

Prof. Dr. Juan I. Córcoles-Tendero

E-Mail Website
Guest Editor
Renewable Energy Research Institute, Industrial Engineering School, Castilla – La Mancha University, Campus Universitario s/n, 02071 Albacete, Spain
Interests: heat exchangers; computational fluid dynamics; fluidized beds; rheometer; non-Newtonian fluids
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The use of methods to enhance the efficiency of engineering systems is essential in several industrial applications, focused on hydraulic systems (water supply or drainage systems) or heat transfer processes (oil refrigerators, evaporators, air conditioning or the food industry). These methods can contribute in reducing the energy consumption, resulting in the reduction of operating costs.

A wide variety of these methods are based on to modify the geometry of the system components, with the aim of reducing hydraulic head losses, promoting mixing of fluid due to swirl flow induction at the secondary flow region, or improving heat transfer performance.

One of the most common tools to analyze the performance of those methods is the use of computational fluid dynamic techniques (CFD) based on numerical simulations, as a complementary activity to experimental studies as well as a prior step to the design of engineering systems. In addition, CFD enables the analysis of operation of non-existing equipment and a comparison of alternative designs.

The aim of this Special Issue is to present the state-of-the-art and applications related to the use of CFD tools in engineering systems, such as water supply and drainage systems or heat transfer processes, presenting research to study the performance of these devices as well as to predict the fluid behavior in detail as additional information to the experimental data.

Prof. Dr. Juan I. Córcoles-Tendero
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. Water 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

  • computational fluid dynamics
  • water supply
  • drainage systems
  • heat exchangers
  • hydrodynamics
  • flow behavior
  • thermal processing

Published Papers (2 papers)

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Research

12 pages, 4999 KiB  
Article
Numerical Modeling of Microfluid Dynamics in Xylem Vessels of Khaya grandifoliola
by Daniel Somma de Araujo, Diogo Henrique Morato de Moraes, Marcio Mesquita, Rilner Alves Flores, Rafael Battisti, Glenio Guimarães Santos, Fabio Ponciano de Deus and Rhuanito Soranz Ferrarezi
Water 2021, 13(19), 2723; https://doi.org/10.3390/w13192723 - 01 Oct 2021
Cited by 4 | Viewed by 2097
Abstract
Computational fluid dynamic (CFD) can be used to quantify the internal flow variables of xylem conducting vessels. This study aims to analyze through numerical simulations the xylem water ascent of African mahogany (Khayagrandifoliola) cultivated under different irrigation regimes. We determined [...] Read more.
Computational fluid dynamic (CFD) can be used to quantify the internal flow variables of xylem conducting vessels. This study aims to analyze through numerical simulations the xylem water ascent of African mahogany (Khayagrandifoliola) cultivated under different irrigation regimes. We determined a geometric model, defined through the variability of the anatomical structures of the species, observing characteristics of the xylem vessels such as diameter, length, number of pits, and average surface area of the pits. Then we applied numerical simulation through an Eulerian mathematical model with the discretization of volumes via CFD. Compared to other models, we observed that numerical simulation using CFD represented the xylem microstructures in a greater level of detail, contributing to the understanding of the flow of xylem vessels and the interference of its various structures. Analyzing the micrographs, we observed the non-irrigated vessels had a higher number of pits in the secondary wall thickening when compared to the irrigated treatments. This trend influenced the variability of the radial flow of the xylem vessels, causing greater fluid movement in this region and decreasing the influence of the smooth part of the wall, resulting in a lower total resistance of these vessels. Full article
(This article belongs to the Special Issue Using Computational Fluid Dynamics Techniques Applied to Engineering Systems)
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19 pages, 4693 KiB  
Article
Numerical Analysis on the Heat Transfer Characteristics of Supercritical Water in Vertically Upward Internally Ribbed Tubes
by Xianliang Lei, Ziman Guo, Ruifeng Peng and Huixiong Li
Water 2021, 13(5), 621; https://doi.org/10.3390/w13050621 - 27 Feb 2021
Cited by 4 | Viewed by 1984
Abstract
Internally ribbed tubes (IRTs) with better heat transfer capability have been widely applied in many fields. Several studies focused on the flow and heat transfer in IRTs with special structure configurations, but there is still lack of clear understanding regarding the influence of [...] Read more.
Internally ribbed tubes (IRTs) with better heat transfer capability have been widely applied in many fields. Several studies focused on the flow and heat transfer in IRTs with special structure configurations, but there is still lack of clear understanding regarding the influence of spiral ribs/grooves on the local flow structure and heat transfer capability of supercritical water. In the present paper, numerical simulation on turbulent heat transfer of supercritical water through a vertically upward IRTs is investigated. It is found at low heat fluxes, heat transfer enhancement occurs; the temperature of IRT is lower than that in the smooth tube by 6~7 °C, but at high heat fluxes; deteriorated heat transfer occurs in ST rather than in IRTs; the maximum temperature difference reaches 36 °C. The heat transfer ratio between IRT and ST is about 1.81 in the pseudocritical region, where the velocity deviation is about 20–50%. Once the deterioration heat transfer exists, a thin layer with high temperature but low density and low thermal conductivity so that (with a 20% reduction) fluids will be covered on the surfaces. Effects of rib height, width, lift angle and threads on turbulent heat transfer are analyzed, an optimum rib structure based on the performance evaluation criteria is obtained (α = 50°, e = 0.58 mm, S = 3.5 mm, m = 6), which can achieve the best performance. Full article
(This article belongs to the Special Issue Using Computational Fluid Dynamics Techniques Applied to Engineering Systems)
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