SBIR-STTR Award

Development of a three-dimensional p article trajectory analysis for inlet particle separators is proposed by combining a continuum flow Navier-Stokes analysis capable of simulating flow in an installed inlet with a three-dimensional Lagrangian based particle tracking analysis. Both components represent state-of-the-art technology and their combination would provide a much improved approach capable of integration into aircraft engine design systems. The procedure's capabilities would be extended through incorporation of a stochastic wall reflection model and a particle shattering model. Phase I would combine the two components, add a shattering capability and run a demonstration calculation. Phase II would focus upon further verification via a combination of computation and experiment and model modification and improvement based upon the experimental/computational studies. In addition, Phase II would provide for ease of use of the computational procedure in the design process by structuring a Graphical User Interface (GUI) both for problem setup and output interrogation.

Keywords:
TRAJECTORY ANALYSIS TWO-PHASE FLOWS INLET PARTICLE SEPARATOR

An inlet particle separator (IPS) installed on a gas turbine engine allows the engine to operate for extended periods of time in a sand and dust environment. The performance of an IPS can be significantly improved by the use of analytical methods capable of accurately predicting flow separation, total pressure loss, and particle separation efficiency. Under the Phase I effort, an analysis has been developed that combines a Navier-Stokes analysis capable of simulating flow in an installed inlet with a Lagrangian analysis of the particulate phase. The Phase I software includes a stochastic wall/particle interaction model and a stochastic particle shatter model. Under the proposed Phase II effort, this analysis would first be validated against (available) experimental data, and the Phase I models would be extended and revised as necessary. The analysis then would be applied to the design of a JTAGG II compatible IPS, which would be built and tested. In addition, a Graphical User Interface (Cur) would be developed to simplify the use of the analysis in the design process for the general user. The product developed would provide a new tool for engineering design analysis. It would have a high interest level for commercialization with manufacturers of jet engines, stationary power plants, industrial air cleaners and pneumatic transport equipment. To facilitate commercialization, both workstation and PC software for code and GUI would be developed.

Keywords:
TRAJECTORY ANALYSIS TWO-PHASE FLOWS INLET PARTICLE SEPERATOR JTAGG II