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Energies
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Computational Fluid Flow, Heat Transfer and Energy Impacts
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Computational Fluid Flow, Heat Transfer and Energy Impacts

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J1: Heat and Mass Transfer".

Deadline for manuscript submissions: closed (10 May 2023) | Viewed by 8633

Special Issue Editors

Prof. Dr. Tanmay Basak

E-Mail Website
Guest Editor
Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
Interests: computational thermo fluids; heat and mass transfer; convection–energy flow
Dr. Pratibha Biswal

E-Mail Website
Guest Editor
Department of Chemical Engineering, Indian Institute of Petroleum and Energy, Viakhapatnam 530003, India
Interests: thermal energy storage; computational fluid dynamics; turbine blade cooling

Special Issue Information

Dear Colleagues,

Applications of fluid flow and heat transfer involve material processing, solar applications, biological systems and food industries. Experimental design and processing for efficient processes for these applications are major challenges. In addition, energy optimization is another important aspect of process optimization. Fluid flow and heat transfer processes do constitute important aspects for processing within enclosures and understanding of these processes is a precursor for efficient experimental design. The complexity of the theoretical understanding of fluid flow and heat transfer evolves based on balance/governing equations of nanofluids and associated dispersion, bipolar fluids, two-phase fluid flow, complex fluids in porous medium and complex enclosures with curved walls and 3D cavities. Standard numerical techniques may not be possible to solve governing equations which do involve non-linearly coupled systems. Novel numerical techniques involving various modifications with finite element, finite volume and Lattice Boltzmann methods will be important additions. Energy efficiency for fluid flow and heat transfer can be analyzed with energy flow visualization and entropy generation minimization. Therefore the special issue will cover the above aspects. In addition, computational fluid flow and heat transfer associated with the computational evaluation of energy flow and entropy generation for complex systems will be important contributions.

Potential topics include, but are not limited to:

  • Fluid flow and heat transfer involving nanofluid, bipolar fluid, complex fluid, etc
  • CFD and heat transfer for solar heating
  • CFD and heat transfer for metallurgical processing
  • CFD and heat transfer in food processing
  • CFD and heat transfer in biological and medical sciences
  • Energy flow visualization and energy optimization
  • Entropy generation and minimization in CFD and heat transfer for complex processes
  • CFD and heat transfer in complex cavities including 3D enclosures

Prof. Dr. Tanmay Basak
Dr. Pratibha Biswal
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. Energies 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

  • natural convection
  • mixed convection
  • turbulence
  • nanofluids
  • material processing and CFD
  • energy flow
  • heatlines
  • entropy generation

Published Papers (5 papers)

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Research

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18 pages, 17198 KiB  
Article
Investigation of Thermal Performance of Ternary Hybrid Nanofluid Flow in a Permeable Inclined Cylinder/Plate
by Javali Kotresh Madhukesh, Ioannis E. Sarris, Ballajja Chandrappa Prasannakumara and Amal Abdulrahman
Energies 2023, 16(6), 2630; https://doi.org/10.3390/en16062630 - 10 Mar 2023
Cited by 38 | Viewed by 1652
Abstract
This article comprehensively investigates the thermal performance of a ternary hybrid nanofluid flowing in a permeable inclined cylinder/plate system. The study focuses on the effects of key constraints such as the inclined geometry, permeable medium, and heat source/sink on the thermal distribution features [...] Read more.
This article comprehensively investigates the thermal performance of a ternary hybrid nanofluid flowing in a permeable inclined cylinder/plate system. The study focuses on the effects of key constraints such as the inclined geometry, permeable medium, and heat source/sink on the thermal distribution features of the ternary nanofluid. The present work is motivated by the growing demand for energy-efficient cooling systems in various industrial and energy-related applications. A mathematical model is developed to describe the system’s fluid flow and heat-transfer processes. The PDEs (partial differential equations) are transformed into ODEs (ordinary differential equations) with the aid of suitable similarity constraints and solved numerically using a combination of the RKF45 method and shooting technique. The study’s findings give useful insights into the behavior of ternary nanofluids in permeable inclined cylinder/plate systems. Further, important engineering coefficients such as skin friction and Nusselt numbers are discussed. The results show that porous constraint will improve thermal distribution but declines velocity. The heat-source sink will improve the temperature profile. Plate geometry shows a dominant performance over cylinder geometry in the presence of solid volume fraction. The rate of heat distribution in the cylinder will increase from 2.08% to 2.32%, whereas in the plate it is about 5.19% to 10.83% as the porous medium rises from 0.1 to 0.5. Full article
(This article belongs to the Special Issue Computational Fluid Flow, Heat Transfer and Energy Impacts)
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21 pages, 9110 KiB  
Article
Computational Modelling of Airflow and Heat Transfer during Cooling of Stacked Tomatoes: Optimal Crate Design
by Emmanuel Kwadwo Kale Agyeman, Steven Duret, Denis Flick, Onrawee Laguerre and Jean Moureh
Energies 2023, 16(4), 2048; https://doi.org/10.3390/en16042048 - 19 Feb 2023
Cited by 2 | Viewed by 1379
Abstract
A 3D computational fluid dynamics (CFD) model was developed to predict the airflow and heat transfer in half of a pallet layer of tomatoes. The numerical and experimental results were compared, and a good agreement was obtained between both results using the root-mean-square [...] Read more.
A 3D computational fluid dynamics (CFD) model was developed to predict the airflow and heat transfer in half of a pallet layer of tomatoes. The numerical and experimental results were compared, and a good agreement was obtained between both results using the root-mean-square error (RMSE) and absolute relative deviation (ARD) values as criteria. The validated CFD model was then used to minimise the product temperature heterogeneity by optimising the airflow rate and the crate design. A downward flow of the air along the central parts of the crates and an upward flow close to the lateral walls of the crates were observed. Three different total ventilated areas (TVAs) were tested to study their influence on the product temperature uniformity and cooling rate. The MTD and ATD decreased from 6.8 to 3.5 °C and from 1.5 to 0.7 °C, respectively, when the TVA was increased from 11 to 15%. Full article
(This article belongs to the Special Issue Computational Fluid Flow, Heat Transfer and Energy Impacts)
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27 pages, 5722 KiB  
Article
A Numerical Investigation of an Artificially Roughened Solar Air Heater
by Anil Singh Yadav, Tabish Alam, Gaurav Gupta, Rajiv Saxena, Naveen Kumar Gupta, K. Viswanath Allamraju, Rahul Kumar, Neeraj Sharma, Abhishek Sharma, Utkarsh Pandey and Yogesh Agrawal
Energies 2022, 15(21), 8045; https://doi.org/10.3390/en15218045 - 29 Oct 2022
Cited by 21 | Viewed by 1886
Abstract
Solar air heating devices have been employed in a wide range of industrial and home applications for solar energy conversion and recovery. It is a useful technique for increasing the rate of heat transfer by artificially creating repetitive roughness on the absorbing surface [...] Read more.
Solar air heating devices have been employed in a wide range of industrial and home applications for solar energy conversion and recovery. It is a useful technique for increasing the rate of heat transfer by artificially creating repetitive roughness on the absorbing surface in the form of semicircular ribs. A thermo-hydraulic performance analysis for a fully developed turbulent flow through rib-roughened solar air heater (SAH) is presented in this article by employing computational fluid dynamics. Both 2-dimensional geometrical modeling and numerical solutions were performed in the finite volume package ANSYS FLUENT. The renormalization-group (RNG) k-ε turbulence model was used, as it is suitable for low Reynolds number (Re) turbulent flows. A thermo-hydraulic performance analysis of an SAH was carried out for a ranging Re, 3800–18,000 (6 sets); relative roughness pitch (RRP), 5–25 (12 sets); relative roughness height (RRH), 0.03–0.06 (3 sets); and heat flux, 1000 W/m2. The numerical analysis revealed that with an RRP of 5 and an RRH of 0.06, the roughened duct produces the highest augmentation in average Nur in the order of 2.76 times that of a plain duct at an Re of 18,000. With an RRP = 10 and RRH = 0.06, the roughened duct was found to provide the most optimum thermo-hydraulic performance parameter (THPP). The THPP was determined to have a maximum value of 1.98 when the Re is equal to 15,000. It was found that semi-circular ribs which have a rib pitch = 20 mm and a rib height = 2 mm can be applied in an SAH to enhance heat transfer. Full article
(This article belongs to the Special Issue Computational Fluid Flow, Heat Transfer and Energy Impacts)
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22 pages, 4239 KiB  
Article
Finite Element Method for Non-Newtonian Radiative Maxwell Nanofluid Flow under the Influence of Heat and Mass Transfer
by Yasir Nawaz, Muhammad Shoaib Arif, Kamaleldin Abodayeh and Mairaj Bibi
Energies 2022, 15(13), 4713; https://doi.org/10.3390/en15134713 - 27 Jun 2022
Cited by 15 | Viewed by 1433
Abstract
The recent study was concerned with employing the finite element method for heat and mass transfer of MHD Maxwell nanofluid flow over the stretching sheet under the effects of radiations and chemical reactions. Moreover, the effects of viscous dissipation and porous plate were [...] Read more.
The recent study was concerned with employing the finite element method for heat and mass transfer of MHD Maxwell nanofluid flow over the stretching sheet under the effects of radiations and chemical reactions. Moreover, the effects of viscous dissipation and porous plate were considered. The mathematical model of the flow was described in the form of a set of partial differential equations (PDEs). Further, these PDEs were transformed into a set of nonlinear ordinary differential equations (ODEs) using similarity transformations. Rather than analytical integrations, numerical integration was used to compute integrals obtained by applying the finite element method. The mesh-free analysis and comparison of the finite element method with the finite difference method are also provided to justify the calculated results. The effect of different parameters on velocity, temperature and concentration profile is shown in graphs, and numerical values for physical quantities of interest are also given in a tabular form. In addition, simulations were carried out by employing software that applies the finite element method for solving PDEs. The calculated results are also portrayed in graphs with varying sheet velocities. The results show that the second-order finite difference method is more accurate than the finite element method with linear interpolation polynomial. However, the finite element method requires less number of iterations than the finite difference method in a considered particular case. We had high hopes that this work would act as a roadmap for future researchers entrusted with resolving outstanding challenges in the realm of enclosures utilized in industry and engineering. Full article
(This article belongs to the Special Issue Computational Fluid Flow, Heat Transfer and Energy Impacts)
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Review

Jump to: Research

32 pages, 1378 KiB  
Review
Advances in Computational Fluid Dynamics Modeling for Biomass Pyrolysis: A Review
by Anirudh Kulkarni, Garima Mishra, Sridhar Palla, Potnuri Ramesh, Dadi Venkata Surya and Tanmay Basak
Energies 2023, 16(23), 7839; https://doi.org/10.3390/en16237839 - 29 Nov 2023
Viewed by 1250
Abstract
Pyrolysis, a process for extracting valuable chemicals from waste materials, leverages computational fluid dynamics (CFD) to optimize reactor parameters, thereby enhancing product quality and process efficiency. This review aims to understand the application of CFD in pyrolysis. Initially, the need for pyrolysis and [...] Read more.
Pyrolysis, a process for extracting valuable chemicals from waste materials, leverages computational fluid dynamics (CFD) to optimize reactor parameters, thereby enhancing product quality and process efficiency. This review aims to understand the application of CFD in pyrolysis. Initially, the need for pyrolysis and its role in biomass valorization are discussed, and this is followed by an elaboration of the fundamentals of CFD studies in terms of their application to the pyrolysis process. The various CFD simulations and models used to understand product formation are also explained. Pyrolysis is conducted using both conventional and microwave-assisted pyrolysis platforms. Hence, the reaction kinetics, governing model equations, and laws are discussed in the conventional pyrolysis section. In the microwave-assisted pyrolysis section, the importance of wavelength, penetration depth, and microwave conversion efficiencies on the CFD are discussed. This review provides valuable insights to academic researchers on the application of CFD in pyrolysis systems. The modeling of pyrolysis by computational fluid dynamics (CFD) is a complex process due to the implementation of multiple reaction kinetics and physics, high computational cost, and reactor design. These challenges in the modeling of the pyrolysis process are discussed in this paper. Significant solutions that have been used to overcome the challenges are also provided with potential areas of research and development in the future of CFD in pyrolysis. Full article
(This article belongs to the Special Issue Computational Fluid Flow, Heat Transfer and Energy Impacts)
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