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Processes
Special Issues
Modelling and Experimental Investigation of Fluid Flows Systems
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Modelling and Experimental Investigation of Fluid Flows Systems

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Process Control and Monitoring".

Deadline for manuscript submissions: closed (15 April 2021) | Viewed by 6715

Special Issue Editor

Dr. Nur Hassan

E-Mail Website
Guest Editor
College of Engineering and Aviation, Central Queensland University, Cairns Square, Corner Abbott and Shields Streets, Cairns, QLD 4870, Australia
Interests: computational fluid dynamics modeling; fluid flow systems; applications of thermo-fluid processes; heat and mass transfer applications; renewable energy technologies; environmental pollution; hydrodynamic modelling of waste water treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Recently, there have been significant advances in experiments and modelling of various applications of different fluid–fluid systems and their applications in engineering processes. This fundamental research is searching for new knowledge in fluid mechanics in support of solutions for a sustainable future. Significant improvements in innovative research and problems in the field of fluid dynamics and the uses of nanofluid in clean energy and energy efficiency applications should help readers to develop an understanding of fundamental multiphysics problems and numerical methods of engineers and scientists.

Currently, the key challenges are focusing on advanced dynamics to select an appropriate modelling approach to predict the interactions applied to the process industry, oil and gas and chemical process, building energy and thermal performance modelling. Furthermore, other challenges are caused by climate change and energy security threats, wastewater treatment, the development of the hydrogen economy, and the production of hydrogen from renewable energy, as well as air pollution technology.

This Special Issue on “Modelling and Experimental Investigation of Fluid Flows Systems” will include cutting-edge research on key issues and recent advances in fluid dynamics and fluid flow systems. Topics of interest include but are not limited to the following:

  • The application of thermo-fluid processes
  • Numerical and experimental analysis of fluid flow systems
  • Advances in modelling of fluid dynamics applied to the process industries
  • Environmental fluid dynamics
  • Air pollution technology
  • Hydrogen energy applications
  • Cooling Efficiency in data centre modelling
  • Energy efficiency in building systems
  • Hydrogen energy
  • Nanofluid in clean energy and energy efficiency applications
  • Process modelling, simulation, and control applications.
  • Modelling of wastewater treatment plants

Dr. Nur Hassan
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. 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

  • Dynamic modelling and simulation
  • Experimental fluid flow
  • Advanced fluid dynamics
  • Thermal performance modelling
  • Nanofluid interactions in energy efficiency applications
  • Wastewater treatment
  • Building simulation
  • Renewable energy sources

Published Papers (2 papers)

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Research

15 pages, 2237 KiB  
Article
Change in Mixing Power of a Two-PBT Impeller When Emptying a Tank
by Jacek Stelmach, Czesław Kuncewicz, Łukasz Adrian, Tomaš Jirout and Frantisek Rieger
Processes 2021, 9(2), 341; https://doi.org/10.3390/pr9020341 - 13 Feb 2021
Cited by 8 | Viewed by 4014
Abstract
The paper presents research on the phenomenon of an increase in mixing power during the emptying of a tank with two 6-PBT45° axial impellers in operation, located on a common shaft, pumping the liquid to the bottom of the mixing tank. A large [...] Read more.
The paper presents research on the phenomenon of an increase in mixing power during the emptying of a tank with two 6-PBT45° axial impellers in operation, located on a common shaft, pumping the liquid to the bottom of the mixing tank. A large increase in mixing power took place when the free surface of the liquid was just above the upper edge of one of the impellers (hp/D < 0.1). This increase was even more than 50% compared to the design power for a fully filled mixing vessel. Admittedly, high motor overload, while not very long, may damage it. The study investigated the instantaneous torques acting on the impeller shaft during the emptying of the tank and the velocity distributions in planes r-z. On their basis, the mechanism of the phenomenon observed was determined and correlation relationships were given that permitted the calculation of the numerical values of the power increase factors. Full article
(This article belongs to the Special Issue Modelling and Experimental Investigation of Fluid Flows Systems)
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19 pages, 6115 KiB  
Article
Thermal Stress and Deformation of Hollow Paddle-Shaft Components with Internal High Temperature Molten Salt Flow
by Taha Rajeh, Basher Hassan Al-Kbodi and Houlei Zhang
Processes 2020, 8(12), 1557; https://doi.org/10.3390/pr8121557 - 27 Nov 2020
Cited by 3 | Viewed by 2205
Abstract
Excessive thermal stress and deformation are important reasons causing disservice of high temperature heat exchangers. This paper presents thermal stress and expansion analysis of single-leaf type hollow paddle-shaft components with internal high temperature molten salt flow based on three-dimensional numerical simulations. The results [...] Read more.
Excessive thermal stress and deformation are important reasons causing disservice of high temperature heat exchangers. This paper presents thermal stress and expansion analysis of single-leaf type hollow paddle-shaft components with internal high temperature molten salt flow based on three-dimensional numerical simulations. The results show that the hollow paddles enhance the heat transfer and decrease the maximum thermal stress simultaneously with the expense of a much higher pressure drop than that of solid paddles. The cumulative von Mises stress distribution curve shows that the stress distribution of the component with hollow paddles is more uniform than that with solid paddles. The radial and axial deformations do not differ much for the components with hollow and solid paddles. A larger volume of the fluid space in the hollow paddles leads to stronger heat transfer, smaller maximum thermal stress, and more uniform stress distribution. The effects of the paddle height, the diameter and number of flow holes, the molten salt flow rate, and the material-side heat transfer coefficient are identified. The advantages of hollow paddle designs in both heat transfer and thermal stress (local and overall) performance are revealed. The work in this study can provide a reference for the design and optimization of hollow paddle heat exchangers with high temperature molten salt as working fluid. Full article
(This article belongs to the Special Issue Modelling and Experimental Investigation of Fluid Flows Systems)
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