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Turbine-less Ducted Fan Jet Engine Subsonic Propulsion Wind Tunnel Team Long Ly Garrick Gregory.

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Presentation on theme: "Turbine-less Ducted Fan Jet Engine Subsonic Propulsion Wind Tunnel Team Long Ly Garrick Gregory."— Presentation transcript:

1 Turbine-less Ducted Fan Jet Engine Subsonic Propulsion Wind Tunnel Team Long Ly Garrick Gregory

2 Overview ObjectiveBackground Turbine Engine Turbine-less Ducted Fan Engine Prototype CFD Analysis Wind Tunnel Testing and Validation Applications Future Objectives Questions?

3 Objective To perform simulation, testing, and validation of a conceptual Turbine-less Ducted Fan Jet Engine design. Analyze: Axial Flow Patterns Pressure Differences Thrust, Performance, and Efficiency Design: Outlet Nozzle

4 Background Conventional Turbine engine Air Inlet Compressor Combustion Chamber TurbineNozzle * Images from NASA – Glenn Research Center

5 Turbine-less Ducted Fan Jet Engine What is a ducted fan? A fan or compressor installed inside a duct Why Turbine-less? No need for a turbine to drive the compressor Compressor is driven by electric motor Advantages: Less fuel consumption Less expensive Not difficult to manufacture Solar panel or fuel cell for electricity Hydrogen from fuel cell for combustion Quiet propulsion; suitable for undetected surveillance

6 CAD Model Adaptor, Stator, Streamline injector Complete Engine & Wind Tunnel Mounting Wind Tunnel Engine Mount

7 Rapid Prototype Adaptor, Stator, Streamline injector Complete Engine & Wind Tunnel Mounting Wind Tunnel Engine Mount *High grade plastic for quick prototype and aerodynamic testing

8 CFD Analysis Computational Fluid Dynamics Solidworks /CosmosFloworks Ansys 12.0 / ICEM / Fluent Navier Stokes Equations Finite Volume Method Navier-Stokes Flow Governing Equations (General / Vector Form) Continuity Equation: Momentum Equation: Internal Energy:

9 Axisymmetric Flow Flow Governing Equations (scalar form) Continuity Equation: r Momentum Equation: θ Momentum Equation: z Momentum Equation:

10 Finite Volume Method Finite Difference Equations Taylor Series Expansion

11 CFD Progress CosmosFloworks Technical Difficulties Complex geometry Software Crash Overnight Simulations Ansys 12.0 Ease importing geometry from other CAD Software Design Modeler – Parametric Solid Modeling Gambit obsolete Replaced with ICEM CFD Mesh creation slightly different CFD Solver - Fluent

12 Wind Tunnel Testing Static Test Subsonic Wind Tunnel Single axis force transducer 1 pitot tube, 2 pressure transducers T-fitting: dynamic & static pressure LabVIEW Data Acquisition A Pratt and Whitney turbofan engine for the F-15 Eagle

13 Pressure Pitot Tube Pressure Transducers *Pitot tube image from NASA – Glenn Research Center Bernoulli’s Equation: Static pressure + dynamic pressure = Stagnation pressure

14 Power Input Electrical Power Input 2 Digital Multi-meters Voltage Current Brushless Motor Controller Battery Receiver DMM V (v) DMM I (A) Transmitter

15 RPM measurement

16 Impeller RPMs Photo Sensor Tachometer Laser Tachometer Strobe Tachometer

17 Static Test – Voltage Input Test 1 Test 2

18 Static Test – Power Input Test 1 Test 2

19 Static Test – Exit Velocities Test 1 Test 2

20 Static Test - Thrust Test 1 Test 2

21 Nozzle Design

22 Applications High speed UAV’s V/STOL UAV’s LADF: Lift Augmented Ducted Fan; combines high speed and VTOL combines high speed and VTOL Bell X-22A Aero-web.org

23 Future Objectives Complete CFD Analysis Dynamic Wind Tunnel Testing Design Nozzle More Testing

24 Thank You Advisors Dr. Boussalis Dr. Wu Dr. Guillaume Dr. Pham Support Nhan Doan Solomon Yitagesu Yacine Sahnoun Shing Chan Johanna Lopez Sara Esparza Roland Chen

25 ?


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