Jae‒Jin Kim
Datos Biográficos
| ID | 8964314 |
|---|---|
| NOMBRE | Jae‒Jin Kim |
| NOMBRES | Jae‒Jin |
| APELLIDO | Kim |
| FIRMA | KIM J |
| AFILIACIONES | Ulsan National Institute of Science and Technology |
| ORCID | 0000-0002-6762-6468 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 7 |
| TOTAL DE CITAS | 0 |
| TOTAL COMO AUTOR | 7 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2020 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 0 |
Enhancing geometric fidelity and wind-field prediction accuracy in complex urban environments using a Cartesian cut-cell CFD model
Accurate prediction of pedestrian-level winds in dense urban environments is essential for ventilation assessment and pollutant-dispersion studies. However, conventional Cartesian-grid computational fluid dynamics (CFD) models often represent oblique or curved building surfaces using a stair-step approximation, which distorts urban morphology unless the grid is globally refined. In this study, we integrated a Cartesian cut-cell method (CCM) into …
Cold stress mitigation by urban trees
CFD–radiation coupled model evaluates winter tree effects on UTCI in Daegu. • Wind speed dominates UTCI (R≈−0.97); air temperature and MRT are secondary. • Tall evergreens ease cold stress in wind-exposed corridors, esp. morning and night. • In sheltered zones, evergreen shading lowers MRT and worsens afternoon cold stress. • Deciduous or low trees fit sheltered areas; evergreens suit windy sites. Extreme cold surges, increasingly observed in mid…
Development of a building-resolving CFD model coupled with warm-cloud microphysics for simulating urban moisture and phase-change effects
Urban heat stress depends on apparent temperature, yet many building-resolving computational fluid dynamics (CFD) studies simplify humidity or rely on external forcing. We present BECLOUD, a building-resolving CFD model that incorporates a dynamic cloud-model microphysics parameterization for warm-phase processes, resolving wind, temperature, and moisture at meter scale. BECLOUD is applied to a densely built district in Jungnang-gu, Seoul, from 1…
Impact of Super High-Rise Buildings on Gust Generation in Surrounding Areas During Typhoon Landfall
This study investigates the effects of a high-rise building complex (HB) located in the Haeundae District, Busan, South Korea on surrounding airflow patterns and gust generation using the Parallelized Large-Eddy Simulation Model Version 6.0. Numerical simulations were validated against wind speeds measured during the landfall of Typhoon Hinnamnor, which affected the Busan area in South Korea. To assess the impact of HB height, scenario experiment…
How to plant trees on an elevated road to improve thermal comfort in a street canyon
Investigated the effects of trees on elevated roads on airflow and thermal comfort. • Implemented a tree-induced cooling parameterization in the CFD model. • Elevated roads significantly affect airflow and temperature in street canyons. • Trees on elevated roads improve thermal comfort through cooling and shading. • Trees over 6 m in height are recommended for improving UTCI. This study investigates the impact of trees planted on an elevated road…
Effects of Vertical Forests on Air Quality in Step-up Street Canyons
Vertical forests have been constructed as environmentally friendly solutions for air quality and urban heat problems. With an expectation to provide insights into the value of vertical forests, we examined the impact of these structures on flows and distribution of fine particles in step-up street canyons using a computational fluid dynamics (CFD) model. The CFD model was rigorously validated against wind-tunnel experiments and accurately simulat…
Feasibility of a Virtual Reality Program in Managing Test Anxiety
Test anxiety has been a growing problem in school-aged children, especially for students in East-Asian countries where the pressure for academic achievement is high. These students are more vulnerable to academic stress, which could further lead to anxiety disorders. For this reason, this study examined the feasibility of virtual reality (VR) test anxiety program in managing anxiety in students. A total of 22 typically developing children with va…
Sin obras prominentes en esta página.
Feasibility of a Virtual Reality Program in Managing Test Anxiety
Test anxiety has been a growing problem in school-aged children, especially for students in East-Asian countries where the pressure for academic achievement is high. These students are more vulnerable to academic stress, which could further lead to anxiety disorders. For this reason, this study examined the feasibility of virtual reality (VR) test anxiety program in managing anxiety in students. A total of 22 typically developing children with va…
Effects of Vertical Forests on Air Quality in Step-up Street Canyons
Vertical forests have been constructed as environmentally friendly solutions for air quality and urban heat problems. With an expectation to provide insights into the value of vertical forests, we examined the impact of these structures on flows and distribution of fine particles in step-up street canyons using a computational fluid dynamics (CFD) model. The CFD model was rigorously validated against wind-tunnel experiments and accurately simulat…
Impact of Super High-Rise Buildings on Gust Generation in Surrounding Areas During Typhoon Landfall
This study investigates the effects of a high-rise building complex (HB) located in the Haeundae District, Busan, South Korea on surrounding airflow patterns and gust generation using the Parallelized Large-Eddy Simulation Model Version 6.0. Numerical simulations were validated against wind speeds measured during the landfall of Typhoon Hinnamnor, which affected the Busan area in South Korea. To assess the impact of HB height, scenario experiment…
How to plant trees on an elevated road to improve thermal comfort in a street canyon
Investigated the effects of trees on elevated roads on airflow and thermal comfort. • Implemented a tree-induced cooling parameterization in the CFD model. • Elevated roads significantly affect airflow and temperature in street canyons. • Trees on elevated roads improve thermal comfort through cooling and shading. • Trees over 6 m in height are recommended for improving UTCI. This study investigates the impact of trees planted on an elevated road…
Enhancing geometric fidelity and wind-field prediction accuracy in complex urban environments using a Cartesian cut-cell CFD model
Accurate prediction of pedestrian-level winds in dense urban environments is essential for ventilation assessment and pollutant-dispersion studies. However, conventional Cartesian-grid computational fluid dynamics (CFD) models often represent oblique or curved building surfaces using a stair-step approximation, which distorts urban morphology unless the grid is globally refined. In this study, we integrated a Cartesian cut-cell method (CCM) into …
Cold stress mitigation by urban trees
CFD–radiation coupled model evaluates winter tree effects on UTCI in Daegu. • Wind speed dominates UTCI (R≈−0.97); air temperature and MRT are secondary. • Tall evergreens ease cold stress in wind-exposed corridors, esp. morning and night. • In sheltered zones, evergreen shading lowers MRT and worsens afternoon cold stress. • Deciduous or low trees fit sheltered areas; evergreens suit windy sites. Extreme cold surges, increasingly observed in mid…
Development of a building-resolving CFD model coupled with warm-cloud microphysics for simulating urban moisture and phase-change effects
Urban heat stress depends on apparent temperature, yet many building-resolving computational fluid dynamics (CFD) studies simplify humidity or rely on external forcing. We present BECLOUD, a building-resolving CFD model that incorporates a dynamic cloud-model microphysics parameterization for warm-phase processes, resolving wind, temperature, and moisture at meter scale. BECLOUD is applied to a densely built district in Jungnang-gu, Seoul, from 1…
Computational fluid dynamics (3 obras) · Environmental Science (3 obras) · Geography (3 obras) · Meteorology (3 obras) · Urban Heat Island Mitigation (3 obras) · Wind and Air Flow Studies (3 obras) · Canyon (2 obras) · Engineering (2 obras) · Geology (2 obras) · Plant Water Relations and Carbon Dynamics (2 obras)