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Fluid Dynamics and Efficacy of Swirling Flow in a Solid Fuel Ramjet Engine

Fluid Dynamics and Efficacy of Swirling Flow in a Solid Fuel Ramjet Engine. Samuel R. Carr University of Virginia Region I Student Conference, April 7-8, 2017 Charlottesville, Virginia. Swirling Flow – State of the Art. Solid Fuel vs. Liquid Fuel Variable Bypass Secondary Gaseous Injection

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Fluid Dynamics and Efficacy of Swirling Flow in a Solid Fuel Ramjet Engine

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  1. Fluid Dynamics and Efficacy of Swirling Flow in a Solid Fuel Ramjet Engine Samuel R. Carr University of Virginia Region I Student Conference, April 7-8, 2017 Charlottesville, Virginia

  2. Swirling Flow – State of the Art • Solid Fuel vs. Liquid Fuel • Variable Bypass • Secondary Gaseous Injection • Inlet Swirler

  3. Summary of Project • Using Computational Fluid Dynamics (CFD) to model fluid flow • 2D Analysis Proof of Concept phase • Vary inlet flow angle • Hope to achieve strong recirculation zone • 3D Analysis • Replicate effects produced in 2D analysis • Cooperation with Aerojet-Rocketdyne

  4. Geometry, velocity fields, scalar profiles 2D Analysis

  5. 2D Geometry & Set-up • Simplified axisymmetric model • Inlet air angle can be varied • Constant fuel regression

  6. Preliminary 2D Results • Inlet angle: 70° • Constant axial velocity • Recirculation zone

  7. Preliminary 2D Results

  8. Geometry, Particle Traces, Scalar Profile, Velocity Profile 3d Analysis

  9. 3D Geometry • Cylindrical base has a “bullet” shape • 6 blades • NACA 64 A010 airfoil shape • 60°relative to centerline

  10. Particle Traces

  11. Particle Traces

  12. Scalar Profile

  13. Velocity Profiles

  14. Velocity Profile

  15. Acknowledgements • Dr. Rita Schnipke, Department of Mechanical and Aerospace Engineering at the University of Virginia • Dr. Pat Hewitt, Aerojet-Rocketdyne • Mark Friedlander, Aerojet-Rocketdyne

  16. Questions?

  17. Backup slides

  18. Pressure

  19. 2D Scalar Profile Integral

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