Comprehensive evaluation of constant and variable turbulent Schmidt numbers for CFD simulation of near-field air pollutant dispersion DOI
A.U. Weerasuriya, Riccardo Longo, Xuelin Zhang

et al.

Building and Environment, Journal Year: 2024, Volume and Issue: 270, P. 112493 - 112493

Published: Dec. 28, 2024

Language: Английский

The evaporation characteristics and molecular cluster variation of diesel droplets in supercritical environment DOI
Quan Hu, Ruina Li, Dahai Yang

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

In the fuel injection phase of a diesel engine, temperature and pressure within cylinder surpass fuel's critical point, entering supercritical state. This condition significantly affects evaporation atomization processes cylinder. study conducted an experiment on droplets under conditions using high-temperature, constant-volume droplet apparatus. A molecular dynamics model was developed to simulate in nitrogen environment, composed mixture two components: 85.1 mol. % n-dodecane 14.9 isooctane. The focused process sub-supercritical analyzing changes clusters near interface during elucidate relationship between these clusters. findings indicate that lifetime decreases with rising ambient pressure, effects being more pronounced subcritical environment. enrichment molecules is 40% environment 164% suggesting phenomenon conditions. At temperatures, temperature's influence primarily through accelerating initial heating droplet. An increase leads higher number proposes five levels based varying they contain, different transforming into one another. For each increment cluster level, forces by approximately 0.025 kcal/mol Å. environments, distinct exists atmospheric gas, resulting fewer Conversely, this clear replaced layer, which facilitates formation numerous, larger

Language: Английский

Citations

2
Turbulent anisotropy and energy distribution over submerged cubical model DOI
Pankaj Kumar Raushan, Santosh Kumar Singh, Prince Raj Lawrence Raj

et al.

Journal of Wind Engineering and Industrial Aerodynamics, Journal Year: 2025, Volume and Issue: 257, P. 106011 - 106011

Published: Jan. 16, 2025

Language: Английский

Citations

1
URANS simulations of urban microclimates: Validated by scaled outdoor experiments DOI
Guanwen Chen, Shuo-Jun Mei, Jian Hang

et al.

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112691 - 112691

Published: Feb. 1, 2025

Language: Английский

Citations

1
Multi-position melting uniformity based on hot-air welding technology: Numerical simulation and experimental studies DOI

Yang Hong,

Mingxing Zhang, Wei Zhang

et al.

International Journal of Thermal Sciences, Journal Year: 2025, Volume and Issue: 211, P. 109722 - 109722

Published: Jan. 21, 2025

Language: Английский

Citations

0
Numerical investigation of the influence of street length and building configurations on ventilation and pollutant dispersion in idealized street canyons DOI
Namrata Mishra, Aditya Kumar Patra, Abhishek Penchala

et al.

Journal of Wind Engineering and Industrial Aerodynamics, Journal Year: 2025, Volume and Issue: 257, P. 106016 - 106016

Published: Jan. 21, 2025

Language: Английский

Citations

0
Eulerian RANS simulation of pollutant dispersion in atmospheric boundary layer considering anisotropic and near-source diffusivity behavior DOI Creative Commons
Chao Lin, Ryozo Ooka, Hongyuan Jia

et al.

Journal of Wind Engineering and Industrial Aerodynamics, Journal Year: 2025, Volume and Issue: 258, P. 106036 - 106036

Published: Feb. 5, 2025

Language: Английский

Citations

0
Unveiling the Microclimate: A Comprehensive Review of Tools, Techniques, and Future Directions for Sustainable Cities DOI
Trisha Roy, Anirban Middey, Reddithota J. Krupadam

et al.

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112726 - 112726

Published: Feb. 1, 2025

Language: Английский

Citations

0
Identifying the most influential statistics on low-occurring wind speed at pedestrian height for a semi-idealized urban building environment DOI Creative Commons
Usman Shaukat, Knut Erik Teigen Giljarhus, Jasna Bogunović Jakobsen

et al.

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112769 - 112769

Published: Feb. 1, 2025

Language: Английский

Citations

0
Assessing Pedestrian Exposure to Heat via the Wet-Bulb Globe Temperature Using Mobile Phone Location Data and Urban Thermal Simulations DOI Creative Commons
Yasunobu Ashie, Eiko Kumakura, Takahiro Ueno

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(5), P. 676 - 676

Published: Feb. 21, 2025

The recent rise in temperatures urban areas has raised concerns about various health problems, such as heat-related illnesses. This study quantified the number of individuals exposed to outdoor heat during daytime summertime waterfront area Tokyo. Conventional meteorological observation and administrative data are insufficient for high-resolution analyses people flow conditions environments. Therefore, this introduced a new methodology combining computational fluid dynamics (CFD) mobile phone global positioning system (GPS) data. A numerical simulation was performed estimate wet-bulb globe temperature (WBGT) by analyzing radiation models. WBGT parks determined be approximately 27 °C, while on-road exceeded 29 °C. Simultaneously, pedestrian density assessed collecting GPS data, revealing that pedestrians concentrated near stations, office areas, shopping districts within 5 km × area. Furthermore, review stroke cases (2010–2020) indicated yielded stronger correlations with than considering alone. Finally, risk index established, integrating heat, flow, aging rate, which more accurately predicted cases.

Language: Английский

Citations

0
Recent progress in optimization of RANS turbulence models for accurate urban airflow and contaminant dispersion simulations DOI
Sumei Liu, Lu Xu, Bingqian Chen

et al.

Sustainable Cities and Society, Journal Year: 2025, Volume and Issue: unknown, P. 106336 - 106336

Published: March 1, 2025

Language: Английский

Citations

0