Koopman analysis by the dynamic mode decomposition in wind engineering
The Koopman theory, a concept to globally model nonlinear signals by a linear Hamiltonian,
has been at the frontier of fluid mechanics research for the last decade. Wind engineering …
has been at the frontier of fluid mechanics research for the last decade. Wind engineering …
Large eddy simulation study on pedestrian-level wind environments around elevated walkways and influential factors in ideal urban street canyons
Constructing elevated walkway systems is an effective and prevalent strategy for densely
populated cities to improve pedestrian walkability and road safety. Nevertheless, adding an …
populated cities to improve pedestrian walkability and road safety. Nevertheless, adding an …
Spatial distribution characteristics of PM2. 5 concentration around residential buildings in urban traffic-intensive areas: From the perspectives of health and safety
The impact of traffic pollution on the health and safety of residents that live in roadside
residential buildings has been a major concern for governments. This study investigated the …
residential buildings has been a major concern for governments. This study investigated the …
The linear-time-invariance notion to the Koopman analysis: The architecture, pedagogical rendering, and fluid–structure association
This work augments a Linear-Time-Invariance (LTI) notion to the Koopman analysis, finding
an invariant subspace on which consistent Koopman modes are expanded with fluid …
an invariant subspace on which consistent Koopman modes are expanded with fluid …
[HTML][HTML] Sensitivity of urban morphology and the number of CFD simulated wind directions on pedestrian wind comfort and safety assessments
Pedestrian wind comfort and safety are critical in urban design, especially as cities densify
and climate change impacts intensify. While Computational Fluid Dynamics (CFD) …
and climate change impacts intensify. While Computational Fluid Dynamics (CFD) …
[HTML][HTML] A parametric and feasibility study for data sampling of the dynamic mode decomposition: Spectral insights and further explorations
The present work extends the parametric investigation on the sampling nuances of dynamic
mode decomposition (DMD) under Koopman analysis. Through turbulent wakes, the study …
mode decomposition (DMD) under Koopman analysis. Through turbulent wakes, the study …
Designing green walls to mitigate fine particulate pollution in an idealized urban environment
Green walls are pivotal for advancing sustainable urban development and can mitigate fine
particulate pollution in urban areas if designed with advantageous planting strategies …
particulate pollution in urban areas if designed with advantageous planting strategies …
[HTML][HTML] Establishing direct phenomenological connections between fluid and structure by the Koopman-Linearly Time-Invariant analysis
In this work, we introduce a novel data-driven formulation, the Koopman-Linearly Time-
Invariant (Koopman-LTI) analysis, for analyzing Fluid-Structure Interactions (FSI). An …
Invariant (Koopman-LTI) analysis, for analyzing Fluid-Structure Interactions (FSI). An …
CFD simulations of wind-induced ventilation in apartment buildings with vertical voids: Effects of pilotis and wind fin on ventilation performance
Double-loaded affordable apartments are commonly seen in tropical develo** countries to
maximize total floor areas. However, the double-loaded apartments would possibly cause …
maximize total floor areas. However, the double-loaded apartments would possibly cause …
[HTML][HTML] Data generative machine learning model for the assessment of outdoor thermal and wind comfort in a northern urban environment
Predicting comfort levels in cities is challenging due to the many metric assessment. To
overcome these challenges, much research is being done in the computing community to …
overcome these challenges, much research is being done in the computing community to …