Results 241 to 250 of about 10,556,792 (334)

Comparative Numerical Studies for the Flow Energy Dissipation Features in a Vertical Two‐Stage Centrifugal Pump in Pump and Turbine Conditions

open access: yesEnergy Science &Engineering, EarlyView.
Based on entropy theory, this study presents a comparative numerical analysis of the flow energy dissipation (FED) in a VTSP under two distinct operating conditions: pump condition and turbine condition, both characterized by relatively high hydraulic efficiencies of 88.9% and 87.4%, respectively. In pump condition, the highest FED production occurs in
S. Liu   +5 more
wiley   +1 more source

Thermal Energy Storage Improvement in a Tube‐in‐Tube Heat Exchanger With Innovative Design of Extra‐Fins Configurations

open access: yesEnergy Science &Engineering, EarlyView.
Optimization of fin configuration to minimize material use and improve energy storage efficiency. The optimal configuration reduced full melting time by 33.88%. The proposed design approach improved thermal efficiency and sustainability in energy systems. ABSTRACT Energy and the environment are essential issues worldwide.
Behnam Ataeiyan
wiley   +1 more source

Optimal Nanoparticle Size in SiO₂/Al₂O₃‐Water Nanofluids for Enhancing Intercooler Thermal Enhancement: A Conjugate Heat Transfer Study

open access: yesEnergy Science &Engineering, EarlyView.
The simulation shows that the comprehensive heat transfer effect of using nanofluids as cooling liquid is greater than 1.30 nm SiO2/water and 40 nmAl2O3/water nanofluids have the best heat transfer enhancement effect, while all nanofluids of 30 nm Al2O3/water have the best heat transfer enhancement effect.
Bing Dai   +6 more
wiley   +1 more source

Gut Microbiota–Metabolism Axis Shapes the Individual Metabolic Phenotype of Different Microbiota‐Accessible Carbohydrates

open access: yesFood Frontiers, EarlyView.
Specific MAC bioactivities are associated with gut biotransformation. ABSTRACT Increasing the intake of microbiota‐accessible carbohydrates (MACs) has emerged as a promising nutritional strategy for preventing metabolic diseases. However, the consistency of their beneficial effects remains unclear, hindering their optimized application.
Na‐Na Zhang   +8 more
wiley   +1 more source

A Mathematical Model for Two‐Phase Flow in Confined Environments: Numerical Solution and Validation

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
We present a numerical framework based on the Cahn‐Hilliard‐Navier‐Stokes (CHNS) model to simulate biphasic flow in confined environments. After deriving the mathematical model, we develop the weak form of the system of PDEs using a pedagogical approach to enable its implementation in FEniCS.
Giuseppe Sciumè   +3 more
wiley   +1 more source

Analysis of Turbulent Modeling for Free‐Surface Flows Using a Hybrid RANS‐LES Model and Particle‐Based Moving Particle Semi‐Implicit Method

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
A hybrid RANS‐LES turbulence model adapted for the Moving Particle Semi‐implicit method is employed to investigate a turbulent free surface flow. A method based on the cell‐linked list is proposed to speed up the nearest wall search for the turbulence model.
Fabio Kenji Motezuki   +3 more
wiley   +1 more source

Vanillin Modulates the Sedative Effect of Diazepam, Possibly Through GABAergic Interaction Pathways in Thiopental Sodium‐Induced Sleeping Mice

open access: yesFood Safety and Health, EarlyView.
Vanillin showed moderate sedative and modulatory synergistic activities on diazepam in thiopental sodium‐induced sleeping mice. These effects are implicated with GABAergic intervention. ABSTRACT Insomnia is a common sleep disorder affecting approximately 10% of adults.
Salehin Sheikh   +8 more
wiley   +1 more source

Downdraft Devices for Negative Emissions—Quantification Study and Environmental Implication

open access: yesGreenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Methane (CH4) is a potent greenhouse gas with a global warming potential far exceeding that of CO2 over short time horizons. Its removal from the atmosphere remains challenging due to its low ambient concentration and chemical stability. This study explores downdraft energy towers (DETs) as an innovative CH4 mitigation technology that enhances
Xiaokun Yao   +4 more
wiley   +1 more source

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