Advanced Wake Turbulence Modelling for Naval CFD Applications Navy STTR FY2015.A Sol No.: Navy STTR FY2015.A Topic No.: N15A-T002 Topic Title: Advanced Wake Turbulence Modelling for Naval CFD Applications Proposal No.: N15A-002-0130 Firm: Continuum Dynamics, Inc. 34 Lexington Avenue Ewing, New Jersey 08618 Contact: Glen Whitehouse Phone: (609) 538-0444 Abstract: Predicting the high Reynolds number viscous turbulent flow around realistic aircraft, rotorcraft and ship geometries with CFD is time consuming and computationally expensive, with the number of cells required to resolve the flow driving the computational cost. Even with modern CFD methods, the cost of adequately resolved solutions is prohibitive for most engineering tasks. The team of Continuum Dynamics, Inc., University of Michigan and Georgia Institute of Technology proposes the development of a novel efficient high fidelity method for improved turbulence modelling directly interfaced with DoD/Navy CFD that builds upon prior and ongoing work in turbulence modelling, unsteady viscous CFD, alternate formulations of the Navier Stokes equations and overset methods. Based on this related work it is anticipated that the proposed technology, through improved resolution of small scale vortical structures on coarser grids, will have at least a two order of magnitude improvement in computational cost when compared to contemporary methods. In Phase I, particular attention will be placed on the development and demonstration of the core high-risk, but high-payoff, technologies to establish proof-of-concept, whereas Phase II would see the formal interfacing, debugging and testing of the proposed tool. Benefits: A successful SBIR effort would produce a highly efficient CFD solver for unsteady viscous turbulent flows. Given the unique nature of the proposed methodology, significant computational savings will be realized when compared to contemporary CFD methods. Significant commercialization opportunities are anticipated in licensing the new modeling tools and retrofittable solver libraries to major vehicle manufacturers and other branches of the government interested in CFD, with particular emphasis on vorticity-dominated applications such as rotorcraft and bluff bodies. Further commercial interest would come from organizations that routinely use CFD to analyze vortex-dominated flows such as meteorology, propulsion systems, submarine, building and vehicle aerodynamics. The sustainable energy community could significantly benefit from this methodology since optimization of wind turbine performance and noise for in-situ, unique installations is a potentially global application of this technology. Return