By the complexity of your drawing, I assume this isn't meant to be a little dog house, but an actual room-sized structure.
In this case, an important question is whether or not this room will have windows.
If the room won't have any (open) windows or other means of exchanging air between the inside and outside of the room (other than the single door shown), then you honestly don't need anything. Wind is caused by differential pressure in the atmosphere: air moves from high-pressure to low-pressure areas. If your room has only one door, the wind will cause a quick gust into the room, increasing the air pressure there until it is roughly equal to the external air pressure, meaning there will be almost no wind in the room. The same applies in conditions whether the wind would actually cause suction within the room; air would leave the room until its air pressure equalizes with the low air pressure outside. In this case, you don't really even need a door, you can just leave a "hole in the wall" for the dogs to go through. Obviously, not having any windows would make the room rather dark and, over time, it would probably get really stinky.
If it will have (open) windows or some other means of transferring air between the inside and the outside of the house (other than the door, of course), then there will be wind and you'll need to handle it. Fred's answer has some good suggestions.
Another suggestion is to study the wind's preferential direction. You'll find that wind tends to move in a given direction. For instance, near the sea (other geographic considerations notwithstanding), wind tends to move perpendicular to the shoreline (moving into the mainland or into the sea). Try to orient the doghouse with the doors and windows perpendicular to this preferential direction, so that the wind doesn't hit them directly. This will greatly reduce the effect of the wind within the doghouse.