UCDS Unsteady Reaction Model

The overall objective of the Phase II effort is to enhance the capability of the UCDS process to simulate and predict the characteristics of combustion instability in propulsion devices, specifically focusing on the propulsion devices used in missile defense applications. GTL shall apply proven techniques to rigorously develop a reaction wave model that is consistent with the rest of the UCDS process. The effort shall also enhance the capability of the UCDS acoustic models to simulate the dynamics in chambers with a catalyst beds, multi-port nozzles, and pintle nozzles. The last part of the effort is focused on validating the UCDS reaction wave and acoustic models examined in this effort. This shall be accomplished by performing a series of experiments that are designed to target the specific physical phenomena addressed by the models. In each case, the UCDS models shall be used to simulate and analyze the configuration of the test system. These predictions shall then be compared to the results of the experiments using the test system. The proposed model enhancement and validation will provide a solid foundation for the application of UCDS technology to MDA systems.