Energy-vortex-momentum coupling bridges hydrodynamics and mass transfer of perfluoroalkyl acids.

Mass transfer and energy analysis of polyethylene pyrolysis in a J−/L-type dual loop seal ICFB system

Recent advance in synthesis of monodisperse porous poly(styrene-divinylbenzene) microspheres for chromatographic separation.

Ultrasound strengthened air impingement drying for improving drying efficiency and physicochemical quality of Chaenomeles sinensis slices.

Moisture condensation in porous media influences heat and mass transport in natural and engineered systems, with implications for energy, environmental, and material applications. This study presents a new framework for analysing coupled heat and mass transfer during vapour condensation in porous materials. The Darcy-scale model, formulated under local thermal equilibrium, incorporates multiphase flow, phase change, and heat transport through standard capillary and permeability relationships. A finite-volume solver was implemented in OpenFOAM to couple heat and vapour transport via a temperature-dependent vapour saturation relationship. An analytical solution for the immobile case, where the condensed liquid remains stationary, defines an effective Péclet number that quantifies the competition between advective and diffusive transport of both heat and vapour. Together with the capillary number (relevant in mobile regimes), representing the balance between pressure and capillary forces, these parameters help classify the condensation regimes. Simulation results reveal that near the condensation front, water flux is driven by capillarity, while farther behind, pressure gradients from vapour injection dominate. Higher effective Péclet numbers yield sharper condensation fronts, while higher capillary numbers enhance liquid spreading near the front. Validation using time-resolved neutron tomography and prior numerical results confirms the ability of the model to capture key condensation mechanisms. The framework also extends to heterogeneous media with fractures, where condensation concentrates near the fracture and gradually diffuses into the surrounding matrix. • A Darcy-scale model captures vapour condensation in porous media with phase change. • Coupled heat and mass transfer is resolved using a finite-volume solver in OpenFOAM. • Two non-dimensional numbers classify front motion and liquid redistribution regimes. • An analytical solution accurately reproduces key trends of the immobile regime. • The model captures saturation and front evolution observed via neutron imaging.

A mathematical model for liquid-vapor heat and mass transfer within the porous wick of loop heat pipes

Establishment of a quantitative GC-MS method for acrylamide detection and in situ kinetic study of acrylamide formation in fried potato slices.

Controllable electrochemical construction of highly dual porous Co-Mn-S@Ni-Co heterojunction for boosting energy-saving hydrogen production assisted by urea oxidation reaction.

Pomelo peel waste was valorized through an ultrasound-assisted integrated strategy to simultaneously recover pectin and essential oil for the fabrication of active biodegradable packaging films. Ultrasonic cavitation significantly promoted cell wall disruption and mass transfer, enabling the efficient co-extraction of pectin and essential oil in a single process. The essential oil was further converted into a stable nanoemulsion via ultrasonic emulsification and incorporated into a pectin/polyvinyl alcohol/carboxymethyl cellulose composite film. The physicochemical, structural, mechanical, and aroma-related properties of the films were systematically characterized by FTIR, XRD, tensile analysis, and electronic nose. The optimized film exhibited balanced mechanical performance with a tensile strength of 6.27MPa, an elongation at break of 5.52%, and a light transmittance of 43.52%, indicating good flexibility and optical properties. Sensors responsive to nitrogen- and sulfur-containing compounds showed higher signals, likely due to oxidative transformation products rather than native sulfur volatiles. The preservation performance was evaluated using fresh strawberries as a model system. Compared with the control group, the ultrasound-enabled essential oil film effectively reduced weight loss, delayed microbial spoilage, and extended the storage life by nearly five days at room temperature. This study demonstrates that ultrasound not only intensifies the sustainable extraction of functional biopolymers but also regulates the structural assembly and release behavior of active packaging films. The proposed strategy provides a green and scalable route for converting Citrus processing waste into high-value antimicrobial packaging materials.

A dual-function type III porous liquid catalyst for CO2 capture and conversion: Mass transfer and reaction kinetic analysis

Turbulent heat and mass transfer in Williamson nanofluid flow over gasketed-plate heat exchanger: Influence of exothermic catalytic-reaction and radiative-heat source

Analysis of the adding V-baffles to vertical planar membrane humidifiers with various numbers and tilt angles on mass transfer and humidifier performance using the CFD numerical simulation method

Effect of Sb-Sb2O3 liquid-liquid phase separation and buoyancy on mass and heat transfer of liquid antimony anode direct carbon fuel cells

Enhanced electron-transfer activation of peroxymonosulfate via the synergy of Y-O-Mn interface and oxygen vacancy within multi-shelled Mn3O4-YMn2O5.

Study on mass transfer of CO2 absorption by tertiary amine-based protic ionic liquids in microchannel and the activation effect of monoethanolamine (MEA)

Instant steam-priming as a novel pre-brewing strategy: Unraveling the metabolomic basis for modulating taste attributes across six tea categories.

A physics-informed neural network coupling framework for predicting heat and mass transfer characteristics of grains

Pore-scale numerical investigation of transient mass transfer during supercritical CO2 injection and storage

Flow behavior and Gas-Liquid mass transfer characteristics of vertical falling film flow under offshore marine floating motion

Constructing benzoquinone‑carbon composite with fast mass transfer for high-rate aqueous magnesium-ion batteries