Parameters:

1. Adjustable wind speed range: 5-30 m/s (core jet region)

2. Wind direction: +60° to -30° (ensuring the jet area remains consistent with horizontal airflow when changing wind direction)

3. Effective area of wind tunnel outlet: 4m wide × 2m high

4. Core jet region: Along the central reference line direction, from the wind tunnel outlet to a distance of 4.8m from the outlet. At 4.8m from the outlet, along the horizontal

5. Reference plane direction, within ±1.4m from the central reference line, and along the vertical reference plane direction, within ±0.7m from the central reference line, forming a conical-like jet region.

6. Wind field speed parameters: Within 4.8m from the wind tunnel outlet, under a given effective wind speed, the wind speed in the core jet region (when ≤30m/s) remains stable within ±3% of the given wind speed. At ±1.75m from the central reference line along the horizontal reference plane direction, wind speed attenuation is ≤5% of the given wind speed. At ±1.0m from the central reference line along the vertical reference plane direction, wind speed attenuation is ≤5% of the given wind speed.