The trial has been made inside the tunnel size 90 x 90 cm, which is about the movement of hot gases and smoke, have shown that certain minimum wind speed is necessary to prevent the smoke to flow back to the source.
The study was conducted under a tunnel measuring 90 x 90 cm, which is about the movement of hot gases and smoke by showing that a certain minimum wind speed necessary to prevent smoke flow back upstream.
The experiments within the tunnel Size 90 x 90 cm. The movement of hot gas and smoke by showing that the lowest wind speed some necessary to prevent smoke flowing back to the source.