Development of Phenomenological Liquid Spray Design Tool for Augmentor Operability and Performance

Injection of a liquid stream into a high-speed crossflow is applicable to many combustion applications was well as other general applications. As a result, liquid stream injection has been studied extensively in recent years. Theses studies have resulted in some design tools directed at jet breakup length, jet penetration, and spray features. Despite this progress, however, wide variations in expressions describing even basic features, such as jet penetration, are apparent, reaffirming the lack of sufficient design tools. Relative to CFD applications, correlations developed largely in an empirical manner from data at non-augmentor like conditions are assembled and used to generate source terms within the CFD domain that are associated with the droplets. The current project will develop and validate models describing key phenomena such as jet breakup, droplet sizes, vaporization, mixing and the subsequent spatial and temporal distribution of the fuel. Extensive data will be collected using experiments designed to provide the necessary information to validate the models. The validated models will be assembled into a standalone analytical tools as well as a CFD subroutine that will be incorporated into a CFD code.