The experimental results and analysis, provided in , indicated that this hypothetical area was not constant but varied with the operating conditions. Munday and Bagster also suggested that the mixing process begins after the secondary flow chokes. This mixing causes the primary flow to be retarded whilst secondary flow is accelerated. By the end of the mixing chamber, two streams are completely mixed and the static pressure was assumed to remain constant until it reaches the throat section (iv). The pressure in the mixing chamber was a function of primary fluid, secondary fluid and the back pressure of ejector. Due to a high-pressure region downstream of the mixing chamber’s throat, a normal shock of essential zero thickness is induced (v). This shock causes a major compression effect and a sudden drop in the flow speed from supersonic to subsonic. A further compression of the flow is achieved (vi) as it is brought to stagnation through a subsonic diffuser.