Making Wind

Hello all, I’m new to unity. I have been working on a video game for a while and was trying to make a box that emits wind in one direction. I’m having a hard time making this and was wondering if someone could help me with this.

Maybe this
http://docs.unity3d.com/Manual/terrain-WindZones.html
However, wind zones don’t work on rigidbodies. I created a script here that somewhat works around that limitation and allows the rigidbody to be affected by the wind.
http://docs.unity3d.com/Manual/terrain-WindZones.html