Wei-Chen Tang, Xin Chen, Fei Dong^*

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.4, 2026, DOI:10.32604/fdmp.2026.079861 - 07 May 2026

Abstract Boiling heat transfer remains a cornerstone of efficient thermal management, with far-reaching implications for energy systems and industrial processes. Advances in this field not only deepen fundamental scientific understanding but also enable transformative improvements in energy efficiency, equipment performance, and operational safety. Contemporary research in this area focuses on accurate parameter prediction, intelligent image analysis, and quantitative characterization of bubble dynamics, collectively advancing both mechanistic insight and engineering optimization. In this context, artificial intelligence (AI), encompassing machine learning and deep learning techniques, has emerged as a powerful paradigm, offering significant advantages in predictive accuracy, data-driven… More >

Liang Yin^1,*, Youjia Gao², Jie Ding¹, Sichao Su¹

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.4, 2026, DOI:10.32604/fdmp.2026.079847 - 07 May 2026

Abstract To address the thermal management challenges associated with localized high heat flux in electronic chips, this study proposes a bionic spider-web microchannel heat sink using deionized water as the coolant. Numerical simulations are conducted for two configurations, one with pinfins at the hotspot (Model A) and one without pinfins (Model B). The effects of Reynolds number and hotspot heat flux on flow distribution, pumping power, thermal resistance and temperature uniformity are systematically analyzed. Results show that the flow distribution varies significantly among channels, with higher flow rates near the inlet. Increasing the Reynolds number raises More >

Abdou Alzubaidi¹, Khalid Mahmud², Rashid Mehmood^2,*, Siddra Rana³, Mohammed Alkinidri⁴

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.4, 2026, DOI:10.32604/fdmp.2026.075928 - 07 May 2026

Abstract Flows over rotating disks are central to numerous engineering applications, including turbines, rotating sensors, and advanced cooling devices, where the incoming fluid often strikes the disk at an angle. This study examines magnetohydrodynamic (MHD) oblique slip flow toward a rotating disk, accounting for critical effects such as velocity slip, thermal slip and thermal radiation. In particular, the Cattaneo–Christov heat flux model is used to capture thermal relaxation phenomena, frequently overlooked in prior analyses, while employing a uniform transverse magnetic field to regulate both momentum and heat transfer. Using similarity transformations, the governing nonlinear equations are… More >

Marina Astanina, Igor Miroshnichenko^*, Gennadii Shashkin, Mikhail Sheremet

Frontiers in Heat and Mass Transfer, Vol.24, No.2, 2026, DOI:10.32604/fhmt.2026.077952 - 30 April 2026

Abstract This paper explores the thermal behavior of a composite building element consisting of two air cavities inside a porous layer under isothermal heating of the side walls. The system presents a model of a thermal protection element or building envelope where heat transfer occurs through combined conduction in the porous medium and natural convection in the air gaps. The mathematical formulation is based on the Navier-Stokes equations and the Darcy-Brinkman formulation for the porous structure. The natural convection problem has been solved using the ψ–ω–θ formulation in dimensionless form (ψ—stream function, ω—vorticity, θ—temperature). The main… More >

Xianshi Fang¹, Zexian Guo^1,*, Kaihong Tang¹, Guanzhu Ren²

Frontiers in Heat and Mass Transfer, Vol.24, No.2, 2026, DOI:10.32604/fhmt.2026.077372 - 30 April 2026

Abstract To investigate the complex phase change behavior in two-phase condensation flow of hydrocarbon mixtures in inclined tubes, a numerical model was developed in Fluent using the Volume of Fluid method combined with the Lee phase change model. A mixing effect correction was incorporated to enhance the simulation accuracy, and its impact on the flow and heat transfer characteristics was systematically evaluated. Numerical simulations were performed and subsequently corrected for mixing effects; the final results show good agreement with classical experimental data. The average deviation of the heat transfer coefficient is −0.76%, while that of the… More >

Riyi Lin^*, Bi Pang, Xinwei Wang

Frontiers in Heat and Mass Transfer, Vol.24, No.2, 2026, DOI:10.32604/fhmt.2026.076874 - 30 April 2026

Abstract The thickening of condensed liquid film outside heat-exchange pipes and the pipe bundle effect can significantly degrade the heat transfer efficiency, thus restricting the vacuum phase-change heating furnace from achieving its rated thermal efficiency of over 90%. In this work, a heat transfer enhancement method coupling simple harmonic vibration with non-circular pipes was proposed. A CFD model describing the heat transfer process of horizontal pipes under vibratory conditions was established and stepwise validated against experimental data from published literature and the Nusselt analytical solution. Taking a 50 mm steel circular pipe as the reference, numerical… More >

Jialun Liu^1,2,3,*, Yuchang Lu⁴, Jianjun Lin³, Shebing Li³, Ruixia Gao⁵, Zhao Li⁶

Frontiers in Heat and Mass Transfer, Vol.24, No.2, 2026, DOI:10.32604/fhmt.2026.076292 - 30 April 2026

Abstract A steady thermo-hydraulic model of the helical tube steam generator was first constructed to study the coupled heat transfer process between the primary and secondary sides based on a discrete modeling method, and obtain the heat flux density distribution along the steam generator. Then, taking the obtained coupled heat flux density distribution as the thermal boundary condition input, considering the dynamic variation of physical properties on the secondary side, a dynamic model based on the time-domain method suitable for two-phase flow instability among parallel multiple channels of the steam generator was constructed. Finally, taking the… More >

Yi Lu, Liangliang Liu^*, Haigang Liu

Frontiers in Heat and Mass Transfer, Vol.24, No.2, 2026, DOI:10.32604/fhmt.2026.076230 - 30 April 2026

Abstract The Kelvin structure is a regular tetrahedral truss structure similar to the pore structure of metal foam, which is often used to simplify the simulation of metal foam. However, its flow heat transfer characteristics have rarely been compared with typical truss structures. To supplement the research work in this aspect and quantify the advantages and disadvantages of these structures compared with typical structures, this paper uses modeling software to create tetrahedrons, BCC truss structures, and Kelvin porous structures with 90% porosity, and uses Fluent to study the distribution rules of temperature, pressure, and velocity of… More >

Xiufeng Fei¹, Jian Liu^1,2, Dianhang Wei^1,*, Xiaosong Zhang^1,2,*

Frontiers in Heat and Mass Transfer, Vol.24, No.2, 2026, DOI:10.32604/fhmt.2026.076167 - 30 April 2026

Abstract Thermal-transfer printing technology has gained widespread adoption in small-format printing devices owing to its fast printing speed, good image quality, and environmental sustainability. However, scaling this technology to large-format printing equipment remains challenging, primarily because the internal heat transfer mechanisms in the large-scale thermal-transfer printing head (TPH) are not yet fully understood. This knowledge gap limits further optimization of device design. A two-dimensional model was established to numerically investigate the internal heat transfer within the thermal-transfer printing head under pulse heating conditions. The simulations reveal that the internal temperature distribution adopts a star-like pattern, driven More >

Jingjie He^1,*, Yuhui Jing^2,3, Xiaopeng Zhang²

CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.1, 2026, DOI:10.32604/cmes.2026.080458 - 27 April 2026

Abstract In high-heat-flux environments, traditional cooling channels often fail to satisfy concurrent requirements for high heat transfer efficiency, temperature uniformity, and minimal pumping power. This study proposes an engineering-oriented topology optimization method for fluid-solid conjugate heat transfer to address the conflict between thermal performance and flow resistance under non-uniform heat sources. We introduce a pseudo-three-dimensional conjugate heat transfer model governed by Darcy’s law. This formulation retains three-dimensional effects, such as sidewall conduction and non-uniform surface heat flux. Moreover, the governing equations are reduced to two dimensions, thereby significantly enhancing computational efficiency. To resolve the discrepancy between More >