When conducting a wind comfort and safety analysis using CFD and the Lawson criteria, several key factors are typically evaluated. These include:
Mean wind velocity: This is a measure of the average wind speed in a given area. High mean wind velocities can create discomfort and even safety hazards for people, especially in outdoor spaces such as balconies, terraces, and courtyards.
Turbulence intensity: This is a measure of the amount of fluctuation in the wind velocity. High turbulence intensity can create discomfort and safety hazards, such as strong gusts that can knock over loose objects or even people.
Wind direction: Wind direction can have a significant impact on the wind comfort and safety of a given space. For example, winds that are funneled or channeled can create higher velocities and turbulence intensity.
Time of day: The time of day can also have a significant impact on the wind comfort and safety of a given space. For example, daytime winds may be stronger and more turbulent than nighttime winds, which can create different levels of discomfort and safety hazards.
By taking these factors into account and using CFD to model the wind flow patterns, the Lawson criteria can be used to evaluate the wind comfort and safety of various outdoor spaces. The wind comfort score can then be used to guide design decisions and optimize the comfort and safety of these spaces for people.