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Computation
Special Issues
Computational Heat and Mass Transfer (ICCHMT 2025)
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Computational Heat and Mass Transfer (ICCHMT 2025)

A special issue of Computation (ISSN 2079-3197).

Deadline for manuscript submissions: closed (31 December 2025) | Viewed by 4980

Special Issue Editors

Prof. Dr. Ali Cemal Benim

E-Mail Website
Guest Editor
Center of Flow Simulation (CFS), Department of Mechanical and Process Engineering, Duesseldorf University of Applied Sciences, D-40476 Duesseldorf, Germany
Interests: computational methods; combustion; fire; turbulence; multi-phase flows; environmental flow; fluid machinery; biofluid dynamics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Rachid Bennacer

E-Mail Website
Guest Editor
CNRS (Centre National de la Recherche Scientifique), LMT (Laboratoire de Mécanique et Technologie—Labo. Méca. Tech.), Université Paris-Saclay, ENS (Ecole National Supérieure) Paris-Saclay, 91190 Gif-sur-Yvette, France
Interests: convective heat transfer; porous media; biomaterials; energy/building
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zafer Dursunkaya

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Middle East Technical University, Dumlupınar Bulvarı No. 1, Çankaya, 06800 Ankara, Türkiye
Interests: micro-grooved heat pipes; moving boundary/phase change problems; piston ring dynamics; lubrication
Prof. Dr. Abdulmajeed A. Mohamad

E-Mail Website
Guest Editor
Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Interests: energy; porous media; heat and mass transfer; computational
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Prof. Dr. Jan Taler

E-Mail Website
Guest Editor
Faculty of Environmental Engineering and Energy, Department of Energy, Cracow University of Technology, 31-864 Cracow, Poland
Interests: heat transfer engineering; power plant technology; inverse problems in thermal engineering; heat exchangers; thermal stresses; thermal and flow measurements
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Qiuwang Wang

E-Mail Website
Guest Editor
Key Laboratory of Thermo-Fluid Science and Engineering (Ministry of Education), Xi’an Jiaotong University, Xi’an 710049, China
Interests: heat transfer enhancement and its applications to engineering problems; high-temperature heat transfer and fluid flow; transport phenomena in porous media; numerical simulation; prediction and optimization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue will publish a set of selected papers from the 15. International Conference on Computational Heat, Mass, and Momentum Transfer (ICCHMT 2025), which will be held 19–23 May 2025, in Antalya, Turkey. The selected papers will be published free of charge. There will also be an ICCHMT-Computation Best Paper Award. You are invited to submit a contribution to the conference for consideration and possible publication in this Special Issue.

Topics of the conferences include, but are not limited to, the following:

  • Advanced numerical methods;
  • Aeronautical and space applications;
  • Bio-fluidics and biomedical engineering;
  • Bio-inspired flow and heat transfer;
  • Building-integrated energy and power systems;
  • Complex chemical reaction modeling;
  • Compressible flows;
  • Computational thermal fluid dynamics;
  • Convection and buoyancy-driven flows;
  • Double diffusive convection;
  • Energy-saving process;
  • Fluid flow and heat transfer in biomedical devices and biotechnology;
  • Fluid machinery;
  • Granular flows;
  • Heat and mass transfer in energy systems;
  • Heat and mass transfer in manufacturing and materials processing;
  • Heat and mass transfer in nuclear applications;
  • Heat and mass transfer in particle-laden flows;
  • Heat exchangers/heat pipe;
  • Internal flow and heat transfer;
  • Micro-/nano-heat and mass transfer;
  • Mixing devices and phenomena;
  • Multi-phase flows;
  • Optimization in thermal engineering;
  • Reactive flows and combustion;
  • Thermal flow visualization;
  • Thermal fluid machinery;
  • Thermal heat fluxes;
  • Transport phenomena in porous media;
  • Urban energy flows.

For detailed information on all further aspects of the conference, including the dates, keynote speakers, committees, registration, and accommodation, please check the conference website at https://icchmt25.bilkent.edu.tr/.

Prof. Dr. Ali Cemal Benim
Prof. Dr. Rachid Bennacer
Prof. Dr. Zafer Dursunkaya
Prof. Dr. Abdulmajeed A. Mohamad
Prof. Dr. Jan Taler
Prof. Dr. Qiuwang Wang
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 250 words) can be sent to the Editorial Office for assessment.

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. Computation 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 1800 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 methods
  • combustion
  • fire
  • turbulence
  • multi-phase flows
  • environmental flow
  • fluid machinery
  • biofluid dynamics

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

15 pages, 23897 KB  
Article
Heat Transfer Coefficient Between Spherical Particles in Low-Conducting Fluid
by Andrei I. Malinouski, Oscar S. Rabinovich and Heorhi U. Barakhouski
Computation 2026, 14(3), 74; https://doi.org/10.3390/computation14030074 - 20 Mar 2026
Viewed by 313
Abstract
Calculation of heat transfer in granular materials is an important task for many applications, from thermal management in electronics to exploring celestial soils. Usually, an effective thermal-conductivity model is employed to predict heat flux in unstructured granular media, such as a packed bed. [...] Read more.
Calculation of heat transfer in granular materials is an important task for many applications, from thermal management in electronics to exploring celestial soils. Usually, an effective thermal-conductivity model is employed to predict heat flux in unstructured granular media, such as a packed bed. However, a more advanced approach, the discrete element method (DEM), can capture the complex effects of mechanical loading and material mixtures on thermal transport coefficients, which traditional models struggle with. Pivotal for this approach is knowing the heat transfer coefficient between two adjacent particles. Currently, in most DEM-capable software, only particles in direct surface contact are considered to have non-zero heat conduction. We propose considering particles that are close to each other but don’t have a contact area with a non-zero surface area. We perform numerical modeling of the conductive heat transfer coefficient between equal spherical particles separated by media, assuming the fluid’s thermal conductivity is at least an order of magnitude lower. We use numerical solutions of differential equations to account for both thermal resistance within particles and through the gap between them. We found a simple generalized correlation for the heat transfer coefficient between particles and a general formula for the angular distribution of heat flux density across the particle surface. By employing a non-dimensional approach, the obtained formulas are constructed using non-dimensional parameters: the ratio of the particle’s thermal conductivity to that of the medium, and the ratio of the gap width between particles to their radius. The resulting formula is simple and convenient for DEM heat transfer calculations in packed and fluidized beds. Full article
(This article belongs to the Special Issue Computational Heat and Mass Transfer (ICCHMT 2025))
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19 pages, 3577 KB  
Article
Comparison of Lagrangian and Isogeometric Boundary Element Formulations for Orthotropic Heat Conduction Problems
by Ege Erdoğan and Barbaros Çetin
Computation 2026, 14(2), 35; https://doi.org/10.3390/computation14020035 - 2 Feb 2026
Viewed by 619
Abstract
Orthotropic materials are increasingly employed in advanced thermal systems due to their direction-dependent heat transfer characteristics. Accurate numerical modeling of heat conduction in such media remains challenging, particularly for 3D geometries with nonlinear boundary conditions and internal heat generation. In this study, conventional [...] Read more.
Orthotropic materials are increasingly employed in advanced thermal systems due to their direction-dependent heat transfer characteristics. Accurate numerical modeling of heat conduction in such media remains challenging, particularly for 3D geometries with nonlinear boundary conditions and internal heat generation. In this study, conventional boundary element method (BEM) and isogeometric boundary element method (IGABEM) formulations are developed and compared for steady-state orthotropic heat conduction problems. A coordinate transformation is adopted to map the anisotropic governing equation onto an equivalent isotropic form, enabling the use of classical Laplace fundamental solutions. Volumetric heat generation is incorporated via the radial integration method (RIM), preserving the boundary-only discretization, while nonlinear Robin boundary conditions are treated using variable condensation and a Newton–Raphson iterative scheme. The performance of both methods is evaluated using a hollow ellipsoidal benchmark problem with available analytical solutions. The results demonstrate that IGABEM provides higher accuracy and smoother convergence than conventional BEM, particularly for higher-order discretizations, which is owing to its exact geometric representation and higher continuity. Although IGABEM involves additional computational overhead due to NURBS evaluations, both methods exhibit similar quadratic scaling with respect to the degrees of freedom. Full article
(This article belongs to the Special Issue Computational Heat and Mass Transfer (ICCHMT 2025))
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26 pages, 6923 KB  
Article
Parametric Study of Shock/Boundary-Layer Interaction and Swirl Metrics in Bleed-Enabled External Compression Intakes
by Muhammed Enes Ozcan and Nilay Sezer Uzol
Computation 2025, 13(12), 289; https://doi.org/10.3390/computation13120289 - 8 Dec 2025
Viewed by 668
Abstract
Flow quality at the engine face, especially total pressure recovery and swirl, is central to the performance and stability of external compression supersonic inlets. Steady-state RANS-based numerical computations are performed to quantify bleed/swirl trade-offs in a single-ramp intake. The CFD simulations were performed [...] Read more.
Flow quality at the engine face, especially total pressure recovery and swirl, is central to the performance and stability of external compression supersonic inlets. Steady-state RANS-based numerical computations are performed to quantify bleed/swirl trade-offs in a single-ramp intake. The CFD simulations were performed first without a bleed system over M∞ = 1.4–1.9 to locate the practical onset of a bleed requirement. The deterioration in pressure recovery and swirl beyond M∞ ≈ 1.6, which is consistent with a pre-shock strength near the turbulent separation threshold, motivated the use of a bleed system. The comparisons with and without the bleed system were performed next at M∞ = 1.6, 1.8, and 1.9 across the operation map parameterized by the flow ratio. The CFD simulations were performed using ANSYS Fluent, with a pressure-based coupled solver with a realizable k-ε turbulence model and enhanced wall treatment. The results provide engine-face distortion metrics using a standardized ring to sector swirl ratio alongside pressure recovery. The results show that bleed removes low-momentum near-wall fluid and stabilizes the terminal–shock interaction, raising pressure recovery and lowering peak swirl and swirl intensity across the map, while extending the stable operating range to a lower flow ratio at a fixed M∞. The analysis delivers a design-oriented linkage between shock/boundary-layer interaction control and swirl: when bleed is applied at and above M∞ = 1.6, the separation footprints shrink and the organized swirl sectors weaken, yielding improved operability with modest bleed fractions. Full article
(This article belongs to the Special Issue Computational Heat and Mass Transfer (ICCHMT 2025))
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15 pages, 2311 KB  
Article
Direct Cooling of Microsystems Using a Two-Phase Microfluidic Droplet
by Wenpei Lu, Abdel Illah El Abed, Rachid Bennacer and Xiaoyan Ma
Computation 2025, 13(12), 288; https://doi.org/10.3390/computation13120288 - 6 Dec 2025
Viewed by 2005
Abstract
Droplet-based microfluidics offers a promising approach for enhancing heat transfer in microchannels, which is critical for the thermal management of microsystems. This study presents a two-dimensional numerical investigation of flow and heat transfer characteristics of liquid–liquid two-phase droplet flow in a rectangular flow-focusing [...] Read more.
Droplet-based microfluidics offers a promising approach for enhancing heat transfer in microchannels, which is critical for the thermal management of microsystems. This study presents a two-dimensional numerical investigation of flow and heat transfer characteristics of liquid–liquid two-phase droplet flow in a rectangular flow-focusing microchannel. The phase-field method was employed to capture the interface dynamics between the dispersed (water) and continuous (oil) phases. The effects of total velocity and droplet size on pressure drop and heat transfer performance are systematically analyzed. The results indicate that the heat transfer of two-phase droplet flow was significantly enhanced compared to single-phase oil flow, with its maximum heat transfer coefficient being approximately three times that of single-phase oil flow. The average heat transfer coefficient increases with total velocity and exhibits a non-monotonic dependence on droplet size. These findings provide valuable insights into the design and optimization of rectangular flow-focusing droplet-based microfluidic cooling systems. Full article
(This article belongs to the Special Issue Computational Heat and Mass Transfer (ICCHMT 2025))
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