Open Access
ARTICLE
Hao Li1, Cunlu Zhao2, Jinhui Zhou1, Jun Zhang3, Hui Wang1, Yanmei Jiao1,*, Yugang Zhao4,5,*
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.063359
（This article belongs to the Special Issue: Heat and Mass Transfer in Renewable Energy Systems: Challenges and Innovations)
Abstract Based on the rapid advancements in nanomaterials and nanotechnology, the Nanofluidic Reverse Electrodialysis (NRED) has attracted significant attention as an innovative and promising energy conversion strategy for extracting sustainable and clean energy from the salinity gradient energy. However, the scarcity of research investigating the intricate multi-factor coupling effects on the energy conversion performance, especially the trade-offs between ion selectivity and mass transfer in nanochannels, of NRED poses a great challenge to achieving breakthroughs in energy conversion processes. This numerical study innovatively investigates the multi-factor coupling effect of three critical operational factors, including the nanochannel configuration,… More >
Open Access
ARTICLE
Bo Yu1,2, Yuye Luo3, Luyao Guo4, Long Huang4,*
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.062851
Abstract This study investigates the flow boiling heat transfer coefficient and pressure gradient of refrigerant R410A in micro-channel flat tubes. Experiments were conducted at saturation temperatures ranging from 25°C to 30°C, mass fluxes between 198 and 305 kg/m2s, and heat fluxes from 9.77 to 20.18 kW/m2, yielding 99 sets of local heat transfer coefficient data. The results show that increasing heat flux and mass flux enhances the heat transfer coefficient, although the rate of enhancement decreases with increasing vapor quality. Conversely, higher saturation temperatures slightly reduce the heat transfer coefficient. Additionally, the experimental findings reveal discrepancies in More >
Open Access
ARTICLE
Syamala Ramadevu1, Prathi Vijaya Kumar1, Giulio Lorenzini2,*, Shaik Mohammed Ibrahim3, Kanithi Jyothsna1
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.062231
Abstract Viscoelastic nanofluid flow has drawn substantial interest due to its industrial uses, including research and testing of medical devices, lubrication and tribology, drug delivery systems, and environmental remediation. This work studies nanofluid flow over a viscoelastic boundary layer, focusing on mass and heat transmission. An analysis is performed on the flow traversing a porous sheet undergoing nonlinear stretching. It assesses the consequences of viscous dissipation and thermal radiation. The scientific nanofluid framework laid out by Buongiorno has been exploited. The partial differential equations illustrating the phenomena can be transfigured into ordinary differential equations by utilizing… More >
Open Access
ARTICLE
Umi Nadrah Hussein1, Najiyah Safwa Khashi’ie1,*, Norihan Md Arifin2, Ioan Pop3
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.063023
Abstract This study investigates the heat transfer and flow dynamics of a ternary hybrid nanofluid comprising alumina, copper, and silica/titania nanoparticles dispersed in water. The analysis considers the effects of suction, magnetic field, and Joule heating over a permeable shrinking disk. A mathematical model is developed and converted to a system of differential equations using similarity transformation which then, solved numerically using the bvp4c solver in Matlab software. The study introduces a novel comparative analysis of alumina-copper-silica and alumina-copper-titania nanofluids, revealing distinct thermal conductivity behaviors and identifying critical suction values necessary for flow stabilization. Dual solutions… More >
Open Access
ARTICLE
Nan Li1,2, Miao Wang1, Jingwen Zhao1, Kechun Sun1, Cheng Bi3, Mu Du4,*, Ersheng You5, Mingyang Yang6,*
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.061192
（This article belongs to the Special Issue: Microscale Heat and Mass Transfer and Efficient Energy Conversion)
Abstract In exploring hypersonic propulsion, precooler combined engines require the development of lightweight, efficient, and compact heat exchangers (HX). As additive manufacturing technology continues to progress, triply periodic minimal surface (TPMS) structures, characterized by exceptionally high surface area to volume ratios and intricate geometric structures, have demonstrated superior heat transfer performance. This research examines the thermal-hydraulic (TH) behavior of FKS and Diamond as heat transfer structures under different Reynolds numbers through numerical simulations. The Nusselt number for FKS is 13.2%–17.6% higher than Diamond, while the friction factor for FKS is approximately 18.8%–29.3% higher. A detailed analysis More >
Open Access
ARTICLE
Haoyuan Jing1, Zhongye Wu1,*, Xiaoyang Jiang1, Qingfen Ma2
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.061750
（This article belongs to the Special Issue: Microscale Heat and Mass Transfer and Efficient Energy Conversion)
Abstract In the organic Rankine cycle, the refrigerant inevitably interacts with the lubricating oil. This study
investigates the interaction mechanism between the fourth-generation refrigerant R1336mzz(Z) and the polyol ester
(POE) which is a representative component of the lubricating oil, using molecular dynamics simulations. The research
focuses on pentaerythritol ester (PEC) with medium to long chain lengths, speciffcally PEC9. Relevant parameters
such as solubility parameters, diffusion coefffcients, binding energies, and radial distribution functions were calculated
to elucidate the interaction dynamics. The variation in solubility parameters suggests that the miscibility of PEC9
and R1336mzz(Z) diminishes as the number More >
Open Access
ARTICLE
Yumei Lv1, Wei Dai2, Shupeng Xie1, Peng Hu1,*, Fei He1,*
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.062781
（This article belongs to the Special Issue: Fluid Flow, Heat and Mass Transfer within Novel Cooling Structures)
Abstract Aiming at the global design issue of transpiration cooling thermal protection system, a self-driven circulation loop is proposed as the internal coolant flow passage for the transpiration cooling structure to achieve adaptive cooling. To enhance the universality of this internal cooling pipe design and facilitate its application, numerical studies are conducted on this system with four commonly used cooling mediums as coolant. Firstly, the accuracy of the numerical method is verified through an established experimental platform. Then, transient numerical simulations are performed on the flow states of different cooling mediums in the new self-circulation system. More >
Open Access
ARTICLE
Shervin Fateh Khanshir1, Saeed Dinarvand2,*, Ramtin Fateh Khanshir3
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.060559
（This article belongs to the Special Issue: Advances in Computational Thermo-Fluids and Nanofluids)
Abstract This article aims to model and analyze the heat and fluid flow characteristics of a carboxymethyl cellulose (CMC) nanofluid within a convergent-divergent shaped microchannel (Two-dimensional). The base fluid, water + CMC (0.5%), is mixed with CuO and Al2O3 nanoparticles at volume fractions of 0.5% and 1.5%, respectively. The research is conducted through the conjugate usage of experimental and theoretical models to represent more realistic properties of the non-Newtonian nanofluid. Three types of microchannels including straight, divergent, and convergent are considered, all having the same length and identical inlet cross-sectional area. Using ANSYS FLUENT software, Navier-Stokes equations… More >
Open Access
REVIEW
Zahrah F. Hussein1,2,*, Abas Ramiar1, Karima E. Amori3
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.059507
（This article belongs to the Special Issue: Heat and Mass Transfer in Energy Equipment)
Abstract The deficiency of potable water resources and energy supply is emerging as a significant and concerning obstacle to sustainable development. Solar and waste heat-powered humidification dehumidification (HDH) desalination systems become essential due to the severe impacts of global warming and water shortages. This problem highlights the need to apply boosted water desalination solutions. Desalination is a capital-intensive process that demands considerable energy, predominantly sourced from fossil fuels worldwide, posing a significant carbon footprint risk. HDH is a very efficient desalination method suitable for remote areas with moderate freshwater requirements for domestic and agricultural usage. Several… More >
Open Access
ARTICLE
Rabail Tabassum1, M. Kamran1, Khalil Ur Rehman2,*, Wasfi Shatanawi2,3, Rashid Mehmood4
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.059466
（This article belongs to the Special Issue: Advances in Computational Thermo-Fluids and Nanofluids)
Abstract This study aims to elucidate the connection between the shape factor of GO (graphene oxide) nanoparticles and the behavior of blood-based non-aligned, 2-dimensional, incompressible nanofluid flow near stagnation point, under the influence of temperature-dependent viscosity. Appropriate similarity transformations are employed to transform the non-linear partial differential equations (PDEs) into ordinary differential equations (ODEs). The governing equations are subsequently resolved by utilizing the shooting method. The modified Maxwell model is used to estimate the thermal efficiency of the nanofluid affected by different nanoparticle shapes. The impact of various shapes of GO nanoparticles on the velocity and… More >
Open Access
ARTICLE
Joby Mackolil1,2, Mahanthesh Basavarajappa1,3, Giulio Lorenzini4,*
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.058702
（This article belongs to the Special Issue: Heat and Mass Transfer Applications in Engineering and Biomedical Systems: New Developments)
Abstract This article explores the optimization of heat transport in a magnetohydrodynamic nanofluid flow with mixed Marangoni convection by using the Response Surface Methodology. The convective flow is studied with external magnetism, radiative heat flux, and buoyancy. An internal heat absorption through the permeable surface is also taken into account. The governing system includes the continuity equation, Navier-Stokes momentum equation, and the conservation of energy equations, approximated by the Prandtl boundary layer theory. The entropy generation in the thermodynamic system is evaluated. Experimental data (Corcione models) is used to model the single-phase alumina-water nanofluid. The numerical… More >
Open Access
ARTICLE
Chao Zhang1, Runze Yan1, Honghui Li1, Qingheng Tang1, Qinghai Zhao1,2,*
Frontiers in Heat and Mass Transfer, DOI:10.32604/fhmt.2025.061469
Abstract The growing need for enhanced heat dissipation is compelling the development of more effective heat exchangers. Innovation inspired by nature bionics, four types of leaf-shaped pin fins were proposed and four combinations of them were considered. The leaf-shaped design of the cooling pin fin enhances uniformity and synergy, effectively creating an optimized flow path that boosts cooling performance. Eight three-dimensional conjugate heat transfer models in staggered arrangement were developed using ANSYS-Fluent software. Aluminum 6061 material was used as the heat sink material and single-phase liquid water flowed through the rectangular channel where the Reynolds (Re) number… More >
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