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Flow over Urban areas to see the wind field using CFD

This project involves meshing externally a platform of some modern design buildings, and then visualizing the behavior of the air that flows through it by simulating it, which is  a common practice nowadays, performed in urban developing, architectural design, environmental planning applications and many more. For the meshing of the maquette configuration of buildings that form this urban landscape, the Hex-dominant parametric (only CFD) and 16 processors were used. A steady state incompressible flow simulation, using the k-omega Spalart Allmaras turbulence model,  is executed, in order to visualize the air flow  as well as the critical areas of the re-circulation. Results from the simulation, as well as flow visualization techniques are also provided from the SimScale and Paraview platforms.

CFD analysis of the central area of hongkong

The purpose of this project is to use experimental results from the Architectural Institute of Japan to validate CFD results gained from SimScale. The case being validated is Case E, which consists a complex of buildings with simplified geometry. Many scenarios are presented in Case E, The scenarios used to validate the SimScale platform were the North, East, South and Westerly winds for the after construction scenario.

The SimScale CFD results were compared to the experimental results and found to have good correlation. Some underprediction was seen in the k-epsilon models in the strong wind regions and underprediction in the wake regions, but is a known trait of the K-epsilon model and is acceptable and should be considered when evaluating results.

The purpose of this project is to use experimental results from the Architectural Institute of Japan to validate CFD results gained from SimScale. The case being validated is Case D, which consists of a single high-rise building, surrounded by blocks of simplified buildings. The geometry used was the scaled geometry from the data file provided by the Architectural Institute of Japan, and measurements were taken at points also listed in the data file.

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