...Joyonty Ghosh; Nepal Chandra Roy; Sanjit Kumar Paul Purpose This study aims to numerically explore double-diffusive natural convection and entropy generation of nano-encapsulated phase change materials (NEPCMs) mixed hybrid nanofluid within a partitioned biconcave cavity. This research also...

...Farah Zemani; Boumediene Beladjine; Amina Sabeur; Omar Ladjedel Purpose The aim of this study is to numerically investigate natural convection heat transfer in an H-shaped cavity filled with Al₂O₃–water nanofluid, with a particular focus on the influence of W-shaped baffle...

... using the SPHs method and to effectively characterize phase transition phenomena, a velocity correction algorithm for the mushy zone is introduced. The Boussinesq assumption is adopted to simulate natural convection under gravitational effects. To prevent unphysical particle penetration, a boundary...

... 02 2026 23 04 2026 13 05 2026 © 2026 Emerald Publishing Limited 2026 Emerald Publishing Limited Licensed re-use rights only Thermal energy storage Nano-encapsulated phase change material EHD Natural convection Thermocapillary convection Heat transfer enhancement...

...Ismael Aguirre; Alejandro Aguirre; E. Castillo; Felipe A. Díaz Purpose This paper aims to propose a stabilized finite element formulation for the simulation of incompressible liquid–solid phase-change processes involving natural convection and temperature-dependent thermophysical properties...

... ) ,    x right ( y ) = H − A sin ( π y H ) , Continuity equation: (3a) ∂ u ∂ x + ∂ v ∂ y = 0 , x-momentum equation: Natural convection Nano-encapsulated phase change material suspension Porous cavity Local thermal non-equilibrium...

...Rajesh Vemula; Hakan F. Oztop Purpose The purpose of this study is to focus on a numerical assessment of natural convection and melting behavior in a square enclosure containing a water-based nano-encapsulated phase change material ( NEPCM ) nanofluid, with particular attention to the influence...

... is reported by the authors. 12 06 2025 09 10 2025 20 11 2025 20 11 2025 © 2026 Emerald Publishing Limited 2026 Emerald Publishing Limited Licensed re-use rights only Heated block Hybrid nanoliquid Natural convection Trapezium cavity Compact scheme...

...Abdelhak Daiz; Rachid Hidki; Ahmed Bahlaoui; Ismail Arroub; Hassane Naji; Olalekan Adebayo Olayemi Purpose This study aims to numerically explore natural convection and latent heat transfer in a square porous cavity filled with a H₂O/nano-encapsulated phase change material ( NEPCM...

...Ebrahim Amiri; Mohammad Saeid Aghighi Purpose This study aims to perform the first comprehensive numerical investigation of transient natural convection in viscoplastic fluids. This study elucidates the temporal evolution of flow, temperature and yield surfaces from an initial quiescent state...

... dynamics, thermal transport and phase change processes. Findings The findings highlight that the interplay between non-Newtonian rheology and NEPCM concentration significantly influences natural convection, particularly near the cold wall. Pseudoplastic nanofluids exhibit greater sensitivity...

...Beatriz Machado dos Santos; Jian Su Purpose This work aims to investigate two-dimensional transient natural convection in a horizontal annular sector containing heat-generating porous medium. Design/methodology/approach The generalized integral transform technique ( GITT ) was used to solve...

...Munirah Aali Alotaibi; Mitsuteru Asai; Abdelraheem M. Aly Purpose This study aims to investigate the impact of Soret and Dufour effects on double-diffusive natural convection within an elliptical cavity filled with nanofluid and saturated by a heterogeneous porous medium. The objective...

...Alexander Ivanovich Kudrov; Mikhail A. Sheremet Purpose The purpose of this study is to numerically examine the time-dependent energy transport during the natural convection of a heat-generating fluid with temperature-dependent viscosity in a vertical cooling cylinder. Design/methodology...

... with a height of 19.44 mm exhibits a 23.19% reduction in full melting time. Additionally, this study evaluates the impact of bottom optimization on natural convection, as indicated by the Grashof number, highlighting the heat transfer performance of the concave bottom arc with a height of 19.44 mm is improved...

...Amirali Shateri; Sina Sadighi; Bahram Jalili; Mohamed H. Mohamed; Payam Jalili; D.D. Ganji Purpose This study aims to examine how natural convection heat transfer and fluid movement function within star-shaped porous cavities containing Fe₃O₄-Al₂O₃/water...

...Youness Ighris; Bilal El hadoui; Jamal Baliti; Youssef Elguennouni; Mohamed Hssikou Purpose This study aims to optimize natural convective heat transfer in a complex cavity filled with Al₂O₃/water nanofluid. It compares theoretical and experimental nanofluid models, focusing...

...Boussouffi Mustapha; Amina Sabeur Purpose This study aims to provide an in-depth analysis of entropy generation (EG) during natural convection within the annular space between confocal elliptic cylinders, with a specific focus on the influence of Brownian motion on nanofluid behavior. Design...

... interplay between geometry, thermal properties and flow dynamics in natural convection systems involving cylindrical geometries. The findings offer useful insights for improving the transfer of heat procedures in real-world situations. Based on the literature analysis carried out and to the best authors...

... 05 2024 © Emerald Publishing Limited 2024 Emerald Publishing Limited Licensed re-use rights only Natural convection Solid fins Differentially heated cube Non-primitive variables Developed in-house code Computational solution d = distance between the fin...