401 - Exploring Three-Dimensional Computational Fluid Dynamics Modeling for Microclimatic Wind and Urban Thermal Environment: A Case Study of the Miami Design District in Miami, Florida

Urban environments are increasingly grappling with extreme heat challenges, that can be exacerbated by climate change, necessitating a comprehensive understanding of the complex interplay between microclimatic factors such as wind patterns and urban thermal conditions. This paper delves into the exploration of three-dimensional computational fluid dynamics (CFD) modeling to better understand the intricate dynamics of microclimatic wind and urban thermal environments, with a specific focus on the iconic Miami Design District in Miami, Florida. This research aims to address the pressing need for advanced tools and methodologies to analyze and mitigate the impact of climate-related phenomena on urban spaces. The insights gained from this research can inform urban planning strategies, building designs, and policies aimed at enhancing sustainability and livability in urban spaces. The methodology employed in this study integrates three-dimensional CFD modeling techniques with a comprehensive field study conducted in the Miami Design District. The CFD models are developed using high-resolution data for topography, building morphology, and weather conditions. To ensure accuracy, the CFD model is validated against measurements obtained through an extensive sensor network strategically deployed across the study area. The measured data include temperature, humidity, wind speed, and direction. The boundary conditions for the CFD model are provided by the Weather Research & Forecasting Model (WRF) model. The CFD analysis highlights localized hotspots and areas of increased wind turbulence, providing valuable insights into the thermal comfort of pedestrians. One significant finding is the identification of microscale thermal variations, influenced by the district's unique urban morphology. The models showcase how the placement and orientation of buildings influence the flow of wind and, consequently, create pockets of varying thermal conditions. Understanding these microscale variations is crucial for designing urban spaces that prioritize comfort and sustainability.