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Modern Trends in Multi-Phase Flow and Heat Transfer

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Thermodynamics".

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 1810

Special Issue Editors


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College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao 266590, China
Interests: mathematical physics; nonlinear waves; numerical simulations; perturbation methods; single- and multi-phase thermofluids; magnetohydrodynamics; nanofluids
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Special Issue Information

Dear Colleagues,

Heat transfer and multi-phase flows are fundamental in classic and burgeoning engineering branches respectively. When generating new engineering innovations, it is always necessary to understand the basics and theories of multiphase flow and heat transfer. Heat transfer and multi-phase flows research are advancing more quickly than ever before as a result of the explosive rise of numerous essential multidisciplinary fields and technologies. Miniaturization of equipment and components, for instance, is increasing across a broad variety of engineering applications as a result of the continuous development of manufacturing procedures. Since the late twentieth century, the prominence of microscopic level and nanostructured multi-phase flow and thermal phenomenon has increased in both conventional industries and highly technical fields notably micro-fabricated fluidic devices, high heat flux cooling, microelectronics, and micro-heat transfer. In contrary, multi-phase flow and thermal transmission processes at the micro- and nanoscales differ significantly from those in typical and large-scale systems. Numerous research has been undertaken over the last several decades to investigate complex multi-phase and thermal transport processes and to suggest novel mechanisms, models, and theories. However, there are still a great deal of theoretical and practical questions to be answered in this significant field. Additionally, multidisciplinary research fields pertinent to Heat transfer and multi-phase flows are expanding quickly. Nanotechnology research in the areas of multi-phase nano - fluid flow and thermal dynamics has grown rapidly during the last decade. However, it has also presented additional obstacles since the current research has produced contradictory findings. Since there is still a significant knowledge gap regarding the foundations and mechanics of two-phase nano - fluid flow and heat transfer, there is an essential need for study in this area. Furthermore, one of the greatest difficulties is discovering how to use multi-phase flow and thermal transport with nanofluids in real-world engineering conditions. This happened because the underlying physical processes are not completely known, and the findings of the available experimental research are inconsistent with one another. All of these growing academic specialties need expertise with the basics, concepts, and applications of microscale and nanoscale multiphase flow and heat conduction dynamics.

In this Special Issue, manuscripts on experimental and theoretical studies pertaining to contemporary developments in the disciplines of

  1. Fundamental challenges, technological advancements, and problems in thermal transfer, critical heat flux, and multi-phase flow with nanofluids dynamics.
  2. The significance of transient power spikes on the temperature transfer coefficient undergoing flow boiling throughout single micro-scale conduits.
  3. Evaporation, Marangoni, nanofluids, and thermocapillary convection.
  4. Drop impact on uneven or constructed, rough surfaces (i.e., flexible, textile surfaces, and porous)
  5. Convective heat exchange in a porous thermally layer saturated with Newtonian and non-Newtonian nanofluids.
  6. The influence of heat on thermophysical properties in sheared nanoparticle suspensions.
  7. Advanced measurement techniques in this field.
  8. Adhesion and Wettability of complex surfaces and/or fluids.

We believe that this issue will give readers in the scientific community with an overall perspective and up-to-date results that will eventually assist the industrial sector in terms of its specialized market niches and end consumers.

Prof. Dr. Mohammad Mehdi Rashidi
Dr. Muhammad Mubashir Bhatti
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. Entropy 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 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

  • entropy
  • fluid flow towards a porous media
  • heat and mass transfer
  • nanofluids
  • computational simulations of multi-phase flows
  • thermal transferring in nanostructures
  • thermal measurement technologies

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Published Papers (1 paper)

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Research

25 pages, 14468 KiB  
Article
Investigation of Thermo-Hydraulics in a Lid-Driven Square Cavity with a Heated Hemispherical Obstacle at the Bottom
by Farhan Lafta Rashid, Abbas Fadhil Khalaf, Arman Ameen and Mudhar A. Al-Obaidi
Entropy 2024, 26(5), 408; https://doi.org/10.3390/e26050408 - 8 May 2024
Viewed by 1035
Abstract
Lid-driven cavity (LDC) flow is a significant area of study in fluid mechanics due to its common occurrence in engineering challenges. However, using numerical simulations (ANSYS Fluent) to accurately predict fluid flow and mixed convective heat transfer features, incorporating both a moving top [...] Read more.
Lid-driven cavity (LDC) flow is a significant area of study in fluid mechanics due to its common occurrence in engineering challenges. However, using numerical simulations (ANSYS Fluent) to accurately predict fluid flow and mixed convective heat transfer features, incorporating both a moving top wall and a heated hemispherical obstruction at the bottom, has not yet been attempted. This study aims to numerically demonstrate forced convection in a lid-driven square cavity (LDSC) with a moving top wall and a heated hemispherical obstacle at the bottom. The cavity is filled with a Newtonian fluid and subjected to a specific set of velocities (5, 10, 15, and 20 m/s) at the moving wall. The finite volume method is used to solve the governing equations using the Boussinesq approximation and the parallel flow assumption. The impact of various cavity geometries, as well as the influence of the moving top wall on fluid flow and heat transfer within the cavity, are evaluated. The results of this study indicate that the movement of the wall significantly disrupts the flow field inside the cavity, promoting excellent mixing between the flow field below the moving wall and within the cavity. The static pressure exhibits fluctuations, with the highest value observed at the top of the cavity of 1 m width (adjacent to the moving wall) and the lowest at 0.6 m. Furthermore, dynamic pressure experiences a linear increase until reaching its peak at 0.7 m, followed by a steady decrease toward the moving wall. The velocity of the internal surface fluctuates unpredictably along its length while other parameters remain relatively stable. Full article
(This article belongs to the Special Issue Modern Trends in Multi-Phase Flow and Heat Transfer)
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