The immediate effects of water ingestion on the transient performance of a generic, high-bypass-ratio jet engine are determined through engine simulation. The air compression subsystem is analyzed with respect to four aerothermodynamic and mechanical processes associated with two-phase fluid flow, and the engine simulation is carried out under three limiting cases of interest in practice, one pertaining to draining water at the end of compression and the other two to partial evaporation at two different locations in the burner. General observations are made on engine operability as a function of engine and control design under various engine and (control input) sensor operating conditions, with various mass fractions of water in the air/water mixture entering the engine during various pilotinitiated power demand changes.
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