| 4. |
Methods of Information Acquisition
for Planning (Nature measurements, Wind tunnels, Modelling) |
||
|
|||
.
|
4.2.2.3 Wind
Velocity Measurements through Sand Erosion
Changes in the wind field, such as those that can be caused by buildings, can be studied in simple form through sand erosion measurements. In these, the physical model is sprinkled with sand and the erosion is registered under various strengths of wind velocity blown at the model. From this, data are collected about the areas in the vicinity of a building where the wind velocity decreases or increases (Figure 4/11a).
|
| . | |
| . . |
|
|
||||||||
| . | ||||||||
|
