As the high-velocity air stream from the air curtain travels downward and reaches the floor, it splits and mixes with the surrounding air. Some of this air flows back inside, and some is directed outward.

This separation is expected and is part of the barrier effect. Importantly, if the air stream is properly aligned and remains **laminar** as it exits the nozzle, most of the air that ends up outside originates from **outside entrainment**, not from conditioned indoor air. This is why nozzle design — and the components that feed air into it, such as flow diverters — is so critical.

Miniveil air curtains are carefully engineered to optimize laminar flow at the nozzle and minimize unwanted turbulence, ensuring the air barrier remains strong and energy-efficient from top to bottom.