Advanced Multiphase Lattice Boltzmann Method (LBM) for Modeling Fuel Injector Atomization in Aeroengine Combustors and Augmentors Navy SBIR FY2010.1 Sol No.: Navy SBIR FY2010.1 Topic No.: N101-028 Topic Title: Advanced Multiphase Lattice Boltzmann Method (LBM) for Modeling Fuel Injector Atomization in Aeroengine Combustors and Augmentors Proposal No.: N101-028-0702 Firm: CFD Research Corporation 215 Wynn Dr., 5th Floor Huntsville, Alabama 35805 Contact: Shiladitya Mukherjee Phone: (256) 726-4831 Web Site: www.cfdrc.com Abstract: High fidelity, advanced multiphase models that capture details of the fuel-air interface evolution are essential to accurate prediction of fuel injection processes. Such simulations can lead to more accurate models or simulation capabilities to be used in design of aeroengine combustors and augmentors. In this SBIR program, CFDRC will develop a novel fuel injection atomization model by using an innovative multiphase approach, the Lattice Boltzmann Method (LBM). In Phase I, CFDRC''s existing multiphase LBM capability will be enhanced to improve numerical stability for realistic fuel-air density ratios in the aero-injectors and benchmarked against relevant test cases. A select case of jet breakup will be simulated and compared with existing data in the literature and CFDRC''s Volume of Fluid (VOF) prediction. In Phase I Option, the multiphase model will be parallelized and optimized for computational speedup. In Phase II, turbulence, thermal transport with phase change and wall interaction models will be implemented into LBM. The model predictions of jet atomization cases, including wall interaction, relevant to main combustor and augmentor fuel injection will be compared against measurements. Benefits: The product to be developed in this SBIR is a high-fidelity, computationally efficient multiphase LBM code with advanced turbulence and thermal transport models for simulation of fuel injector atomization. The products will enable OEMs to better utilize CFD analysis and reduce combustor and augmentor development costs. CFDRC will actively market and license these products to engine OEMs, and continue to support the DoD''s fuel spray technology and Augmentor Design System (ADS) activities. To ensure technology insertion of the fuel injection modeling products into OEM combustor/augmentor design systems, CFDRC will team with General Electric in this SBIR, and has their strong interest, participation, and support (support letter included). Return