THE AIR MULTIPLIER EFFECT EXPLAINED
As the air flows through the slits and out through the front of the fan, the air behind the fan is drawn through the tube as well. This is because of the principle of inducement, where the flowing air being pushed out by the motor induces the air behind the fan to follow it through the fan.
When this happens, a low-pressure region is created, making the air surrounding the edges of the fan to also start to flow in the direction of the breeze, increasing the overall strength of the breeze you feel.
3. The interior of the tube acts as a ramp, which goes around the inside of the tube and out toward the front of the fan.
4. To reduce the noise created from the turbulence generated from sucking air through the base of the Multiplier, a Helmholtz cavity was integrated into the fan’s base to cancel out the extra sound created by using the principle of resonance. The end result: a stream of wind that stays quiet despite the level.