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Combustion Team Supersonic Combustion

Sara Esparza Cesar Olmedo Alonzo Perez. Combustion Team Supersonic Combustion. Faculty Advisors:. Student Researchers:. Dr. Guillaume Dr. Wu Dr. Boussalis Dr. Liu Dr. Rad. Outline. Recent testing Shortened Combustion Chamber Determination of Mach Speed Schlieren

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Combustion Team Supersonic Combustion

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  1. NASA Grant URC NCC NNX08BA44A Sara Esparza Cesar Olmedo Alonzo Perez Combustion TeamSupersonic Combustion Faculty Advisors: Student Researchers: Dr. Guillaume Dr. Wu Dr. Boussalis Dr. Liu Dr. Rad

  2. Outline • Recent testing • Shortened Combustion Chamber • Determination of Mach Speed • Schlieren • Transparent (acrylic) Chamber • Cold Flow • Preheater • Large Compressor • Refuel Hydrogen Tank

  3. Recent Testing • Video • Pressures • 65 psi air • 200 psi hydrogen • Parameters do not prove supersonic combustion • Schlieren photography needed

  4. Temperature Data

  5. Shortened Combustion Chamber • Combustion can be held at a higher mach number • Ensures that the mach number stays above one • Less frictional loss • Shorter mixing time

  6. Pressure Measurement • Reading depends on diameter size • Pressure reading decreases as the diameter increases

  7. Determination of Mach Speed • Calculations • Schlieren Imaging • Cold flow • Analyze shock wave profiles

  8. Schlieren Imaging • Acrylic chamber • Allows visualization • H Studios Haziza polishing • Schlieren Imaging • Cold flow • Analyze shock wave profiles

  9. Possible Results Overexpanded Pressure at nozzle exit lower than ambient Underexpanded Exit pressure greater than back pressure

  10. Preheater • Amptek Flexible Electric Heating Tape • Enhances likelihood of combustion • Reduces density and apparent pressure within chamber

  11. Large Compressor • Drives pressure ratio • Overcomes pressure loss due to heat addition • Larger mass flow rate • Longer testing time • Miniature wind tunnel

  12. Large Compressor • Size: 80 Gallons • Test time: 30 seconds

  13. Refuel Hydrogen Tank • Fuel supply • Industrial Hydrogen Tank • Praxair Customer

  14. Future Work • Schlieren setup and imaging • Purchase compressor • More Testing • NASA Report • USC Fluids Conference

  15. Thanks! Any Questions?

  16. NASA Grant URC NCC NNX08BA44A Timeline2011

  17. Textbook References Anderson, J. “Compressible Flow.” Anderson, J. “Hypersonic & High Temperature Gas Dynamics” Curran, E. T. & S. N. B. Murthy, “Scramjet Propulsion” AIAA Educational Series, Fogler, H.S. “Elements of Chemical Reaction Engineering” Prentice Hall International Studies. 3rd ed. 1999. Heiser, W.H. & D. T. Pratt “Hypersonic Airbreathing Propulsion” AIAA Educational Series. Olfe, D. B. & V. Zakkay “Supersonic Flow, Chemical Processes, & Radiative Transfer” Perry, R. H. & D. W. Green “Perry’s Chemical Engineers’ Handbook” McGraw-Hill Turns, S.R. “An Introduction to Combustion” White, E.B. “Fluid Mechanics”. 10/13/2014 NASA Grant URC NCC NNX08BA44A 17

  18. Journal References Allen, W., P. I. King, M. R. Gruber, C. D. Carter, K. Y Hsu, “Fuel-Air Injection Effects on Combustion in Cavity-Based Flameholders in a Supersonic Flow”. 41st AIAA Joint Propulsal. 2005-4105. Billig, F. S. “Combustion Processes in Supersonic Flow”. Journal of Propulsion, Vol. 4, No. 3, May-June 1988 Da Riva, Ignacio, Amable Linan, & Enrique Fraga “Some Results in Supersonic Combustion” 4th Congress, Paris, France, 64-579, Aug 1964 Esparza, S. “Supersonic Combustion” CSULA Symposium, May 2008. Grishin, A. M. & E. E. Zelenskii, “Diffusional-Thermal Instability of the Normal Combustion of a Three-Component Gas Mixture,” Plenum Publishing Corporation. 1988. Ilbas, M., “The Effect of Thermal Radiation and Radiation Models on Hydrogen-Hydrocarbon Combustion Modeling” International Journal of Hydrogen Energy. Vol 30, Pgs. 1113-1126. 2005. Qin, J, W. Bao, W. Zhou, & D. Yu. “Performance Cycle Analysis of an Open Cooling Cycle for a Scramjet” IMechE, Vol. 223, Part G, 2009. Mathur, T., M. Gruber, K. Jackson, J. Donbar, W. Donaldson, T. Jackson, F. Billig. “Supersonic Combustion Experiements with a Cavity-Based Fuel Injection”. AFRL-PR-WP-TP-2006-271. Nov 2001 McGuire, J. R., R. R. Boyce, & N. R. Mudford. Journal of Propulsion & Power, Vol. 24, No. 6, Nov-Dec 2008 Mirmirani, M., C. Wu, A. Clark, S, Choi, & B. Fidam, “Airbreathing Hypersonic Flight Vehicle Modeling and Control, Review, Challenges, and a CFD-Based Example” Neely, A. J., I. Stotz, S. O’Byrne, R. R. Boyce, N. R. Mudford, “Flow Studies on a Hydrogen-Fueled Cavity Flame-Holder Scramjet. AIAA 2005-3358, 2005. Tetlow, M. R. & C. J. Doolan. “Comparison of Hydrogen and Hydrocarbon-Fueld Scramjet Engines for Orbital Insertion” Journal of Spacecraft and Rockets, Vol 44., No. 2., Mar-Apr 2007. 10/13/2014 NASA Grant URC NCC NNX08BA44A 18

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