Learn More
Research highlights: • CFD is increasingly used for assessment of wind comfort and safety in urban areas • Framework with integration of CFD best practice guidelines in iterative procedure • Graphical representation of the framework by flow-chart including three cases • Application for complex case study with grid-convergence analysis and validation •(More)
This paper provides a brief, non-exhaustive overview of the status of the application of CFD in building performance simulation for the outdoor environment. It focuses on four topics: (1) pedestrian wind environment around buildings; (2) wind-driven rain on building facades; (3) convective heat and mass transfer coefficients at building surfaces; and (4)(More)
Wind flow in urban environments is an important factor governing the dispersion of heat and pollutants from streets, squares and buildings. This paper presents a coupled CFD modelling approach for urban wind flow and indoor natural ventilation. A specific procedure is used to efficiently and simultaneously generate the geometry and the high-resolution(More)
Keywords: Environmental Fluid Mechanics Air and water quality River hydraulics Transverse mixing Wind flow Building aerodynamics a b s t r a c t Computational Fluid Dynamics (CFD) is increasingly used to study a wide variety of complex Environmental Fluid Mechanics (EFM) processes, such as water flow and turbulent mixing of contaminants in rivers and(More)
The global trend towards urbanisation explains the growing interest in the study of the modification of the urban climate due to the heat island effect and global warming, and its impact on energy use of buildings. Also urban comfort, health and durability, referring respectively to pedestrian wind/ thermal comfort, pollutant dispersion and wind-driven rain(More)
Accurate and reliable CFD simulation of temperature stratification in indoor environment is needed for the design and evaluation of displacement ventilation in buildings. This paper presents a detailed and systematic evaluation of the capability of 3D steady RANS CFD simulations to predict the temperature stratification in a room. The evaluation is based on(More)
Pollutant transport due to the turbulent wind flow around buildings is a complex phenomenon which is challenging to reproduce with Computational Fluid Dynamics (CFD). In the present study we use Large-Eddy Simulation (LES) to investigate the turbulent mass transport mechanism in the case of gas dispersion around an isolated cubical building. Close agreement(More)
Graphical abstract Highlights  Trains running through a tunnel can induce high wind speed at underground railroad platforms  This paper presents Large Eddy Simulations of train-induced wind conditions for three different train types  The study includes grid-sensitivity analysis and validation based on experimental data  The study is performed with the(More)
Large-Eddy Simulation is used to simulate wind-induced pollutant dispersion from a vent on the roof of a cubical building. The profiles of the computed mean value and standard deviation of the concentration in the wake of the building are compared to wind-tunnel measurements and good agreement is found. The velocity and concentration values at two(More)