The Effects of Spatial Configurations of Simulated Shrubs on Wind-proof
Effectiveness
Abstract
Maximizing the benefits of windbreaks requires a thorough understanding
of the physical interaction between the wind and the barrier. In this
experiment, a profiling set of Pitot tubes was used to measure the
airflow field and wind velocity of simulated shrubs in a wind tunnel.
The effects of form configurations and row spaces of simulated shrubs on
wind-proof effectiveness were in-depth studied. We come to the following
results: the weakening intensity of hemisphere-shaped and broom-shaped
shrubs on wind velocity was mainly reflected below 2 cm in the root and
6-14 cm in the middle-upper, respectively, while the wind-proof effect
of the spindle-shaped shrubs at the canopy (0.2-14 cm height) was the
best. Besides, the simulated shrubs under 26.25 cm had the best
protection effect on the wind velocity. Moreover, the designed
windbreaks with Nitraria tangutorum, more effectively reduced the wind
velocity among the windbreak compared to behind the windbreak. In the
wind control system, the hemisphere-shaped windbreaks should be applied
as near-surface barriers, and the windbreaks of broom-shaped and
spindle-shaped can be used as a sheltered forest. The results could
offer theoretical guidelines on how to arrange the windbreaks for
preventing wind erosion in the most convenient and efficient ways.