Dr. Robert B. Greendyke
Professor of Aerospace Engineering

 

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Comm: 937-255-3636 x4567
DSN: 785-3636 x4567
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B.B.A., Baylor University, 1979; B.S., Texas A&M University, 1986; M.S., Texas A&M University, 1988; Ph.D., Texas A&M University, 1998.  Dr. Greendyke’s research interests are in the field of Computational Fluid Dynamics with specialties in hypersonics re-entry flows, rarefied gas dynamics, plasma flows, and molecular computational methods.  He has published over 30 conference papers, journal articles, technical reports, and book chapters.  Previous to employment at AFIT, Dr. Greendyke was first a contract Research Scientist at NASA Langley Research Center’s Aerothermodynamics Branch. After NASA, he taught for seven years at the University of Texas at Tyler where he was twice voted “Professor of the Year” in the College of Engineering and Computer Sciences, and also named an Associate Fellow of the AIAA.

Awards

  • AFIT Instructor of the Quarter, AFIT Student’s Association, Spring 2009.
  • Certificate of Recognition, The Office of Naval Research, “For Research Contributions made through the 2004 Office of Naval Research Summer Faculty Research Program.”
  • Voted “Best Professor” by The Engineering Student’s Association, University of Texas at Tyler, Academic Year 2003-2004.
  • Voted “Best Professor” by The Engineering Student’s Association, University of Texas at Tyler, Academic Year 1999-2000.

Certificate of Appreciation, NASA Langley Research Center, In Recognition of Exceptional Service and Achievement in Support of the Aeroassist Flight Experiment Project, October 24, 1991.

Publications

Refereed Journal Publications:

  1. Lewis, S., James, C., Morgan, R., McIntyre, T., Alba, C., Greendyke, R., “Carbon Ablative Shock-Layer Radiation with High Surface Temperatures”, AIAA Journal of Thermophysics and Heat Transfer, Vol. 31, No. 1.
  2. Candler, G., Alba, C., and Greendyke, R. “Characterization of Carbon Ablation Models Including Effects of Gas-Phase Chemical Kinetics,” AIAA Journal of Thermophysics and Heat Transfer, posted online on April 24, 2017.  DOI: 10.2514/1.T4752
  3. Alba, C., Greendyke, R., Lewis, S., Morgan, R., McIntyre, T. “Numerical Modeling of Earth Re-entry Flow with Surface Ablation”, AIAA Journal of Spacecraft and Rockets, vol. 53, no. 1, pgs. 84-97, 2016
  4. Lewis, S., Morgan, R., McIntyre, T., Alba, C., Greendyke, R. “Expansion Tunnel Experiments of Earth Re-entry Flow with Surface Ablation, AIAA Journal of Spacecraft and Rockets, posted online on February 16, 2016.  DOI: 10.2514/1.A33267
  5. Alba, C., Greendyke, R., Marschall, J. “Development of a Nonequilibrium Finite-Rate Ablation Model for Radiating Earth Re-entry Flows, AIAA Journal of Spacecraft and Rockets, vol. 53, no. 1, pgs. 98-120, 2016
  6. Alba, C., Greendyke, R. “A Nonequilibrium Finite-Rate Carbon Ablation Model for Earth Re-entry Flows,” AIAA Journal of Spacecraft and Rockets, Technical Note, posted online on March 14, 2016.  DOI: 10.2514/1.A33399
  7. Lewis, S., James, C., Morgan, R., McIntyre, T., Alba, C., Greendyke, R. “Carbon Ablative Shock-Layer Radiation with High Surface Temperatures,” AIAA Journal of Thermophysics and Heat Transfer, accepted December 2015
  8. Kaplan, S., Greendyke, R., Lowe, R., and Foley, J., Finite Element Modeling of Dynamic Circuit Board Strain Response under High-G Shock Impact,” J. of Surface Mount Technology, Vol. 28, Issue 4, Oct-Dec 2015.
  9. Kaplan, S., Greendyke, R., Lowe, R. and Foley, J., “Measurement of the Electromechanical Response of Capacitors in Dynamic Loading Conditions”, Proceeding of the Society of    Experimental Mechanics, Costa Mesa, CA, Springer, June 2015. 
  10. Callaway, D., Reeder, M., Greendyke, R., Gosse, R., “Measurement and Analysis of Ablation of Solid Carbon Dioxide in a Mach 3 Flow,” AIAA Journal of Spacecraft and Rockets, Vol. 51, 2014.
  11. Jelic, R., Scherer, S., and Greendyke, R., “Simulation of Various Turret configurations at Subsonic and Transonic Flight Conditions using OVERFLOW,” AIAA Journal of Aircraft, Vol. 50, 2013
  12. Pohlman, M., and Greendyke, R.B., “Pylon-Aided Fuel Injection in SCRAMJET Engines,” ASME Journal of Engineering for Gas Turbines and Power, Vol. 135, Feb 2013.
  13. Bentley, B.I. and Greendyke, R.B., “Shock Structure Solution by Hybrid Flowfield Methods,” AIAA Journal of Spacecraft and Rockets, Vol49, 2012.
  14. Bentley, B., and Greendyke, R., “New Method of Calculating Adsorption and Scattering for Xe-Pt(111) Using Direct Simulation Monte Carlo Techniques,” Journal of Vacuum Science and Technology A, Vol. 30, No. 6, November/December 2012.
  15. Weaver, A.B., Alexeenko, A.A., Greendyke, R.B., Camberos, J.A., “Flowfield Uncertainty Analysis for Hypersonic CFD Simulations,” Journal of Thermophysics and Heat Transfer, Vol. 25 No. 1, January-March 2011.
  16. Bentley, B.I. and Greendyke, R.B., “Shock Structure and Entropy-Shock Interactions Using the Unified Flow Solver (UFS),” Journal of Thermophysics and Heat Transfer, Vol. 24, No. 4, October-December 2010.
  17. Greendyke, R.B., Swain, J., and Scott, C.D., “CFD Simulation of Laser Ablated Carbon Plume Propagation in Varying Background Gases for SWNT Synthesis,” The Journal of Nanoscience and Nanotechnology, Vol. 4, No. 4, April 2004.
  18. Greendyke, R.B., Paxson, D.E., Schobeiri, M.T., “Dynamic Simulation of a Wave-Rotor-Topped Engine,” Journal of Propulsion and Power, Vol. 16, No. 5, September-October 2000.
  19. Greendyke, R.B. and Hartung, L.C., “A Convective and Radiative Heat Transfer Analysis for the FIRE II Forebody,” Journal of Spacecraft and Rockets, Vol. 31, No. 6, November-December, 1994, pp.986-992.
  20. Greendyke, R.B., “Parametric Analysis of Radiative Structure in Aerobrake Shock Layers,” Journal of Spacecraft and Rockets, Vol. 30, No. 1, January-February, 1993, pp.51-58.
  21. Greendyke, R.B., Gnoffo, P.A., and Lawrence, R.W., “Calculated Electron Number Density Profiles for the Aeroassist Flight Experiment,” Journal of Spacecraft and Rockets, Vol. 29, No. 5, September-October, 1992, pp.621-626.
  22. Greendyke, R.B. and Hartung, L.C., “An Approximate Method for the Calculation of Nonequilibrium Radiative Heat Transfer,” Journal of Spacecraft and Rockets, Vol. 28, No. 2, March 1991, pp. 165-171.
  23. Carlson, L.A., Bobskill, G.J., and Greendyke, R.B., “Comparison of Vibration-Dissociation Coupling and Radiative Heat Transfer Models for AOTV/AFE Flowfields,” Journal of Thermophysics & Heat Transfer, Vol. 4, No. 1, January, 1990, pp. 16-26.

Invited Papers:

  1. Schwaab, Matthew J., Robert Greendyke, and Bryan Steward. “Reacting Chemistry Based Burn Model for Explosive Hydrocodes". Invited Presentation to AFRL/RW High Explosives Research and Development (HERD) Facility, March 2017
  2. Knoblauch, A., Greendyke, R., Bentley, B., “Classified Topic”, NASIC Threat Modeling and Analysis Program Meeting, April 2016.
  3. Greendyke, R., Kulakhmetov, M., Alexeenko, A., “Accelerated Modeling of Delivery Accuracy by Generalized Polynomial Chaos,” Joint Technical Coordinating Group for Munitions Effectiveness, DAWG Meeting, March 2012.
  4. Greendyke, R.B., “Hypersonics and the US Air Force,” Purdue Aerospace Seminar Series, October 2009.
  5. Greendyke, R.B., Creel, J.R., Payne, B.T., and Scott, C.D., “CFD Simulation of Laser-Ablated Carbon Plumes with ‘Reduced’ SWNT Chemical Modeling,” 2nd NASA/Rice University Workshop on SWNT Growth Mechanisms (Invited speaker/author), Boerne, TX, April 8-12 2005.
  6. Arepalli, S., Greendyke, R.B., Scott, C.D., “Diagnostics and Modeling of Single Wall Carbon Nanotube Growth in Laser Oven Process,” 2nd NASA/Rice University Workshop on SWNT Growth Mechanisms (Invited speaker/author), Boerne, TX, April 8-12 2005.
  7. Greendyke, R.B., Swain, J., and Scott, C.D., “CFD Simulations of Plume Flow Dynamics in Laser Ablation SWNT Formation,” 1st NASA/Rice University Workshop on SWNT Growth Mechanisms (Invited speaker/author), Boerne, TX, February 27-March 2 2003.

Conference Proceedings:

1. Schwaab, Matthew J., Robert Greendyke, and Bryan Steward. “Comparison of Finite Chemistry Model to Mixture Pressure Dependent Burn Rate Model for HMX". Tri-Service Energetic Materials Basic Science Review, August 2016

2. Schwaab, Matthew J., Robert Greendyke, and Bryan Steward. “Comparison of Burn Rate Models to Racting Chemistry Model for HMX". The American Society of Mechanical Engineers International Mechanical Engineering Congress and Exposition, November 2016

3. Greendyke, R., Knoblauch, A., Bentley, B., “High Fidelity CFD Calculations of the Aerothermophysics of Hypersonic Threat Weapons,” 35th Exhaust Plume and Signatures Meeting (JANNAF), May 2016.

4. Alba, C., Greendyke, R., Marschall, J. “Influence of Carbon Nitridation in a Nonequilibrium Finite-Rate Ablation Model” AIAA Paper No. 2015-1453, 53rd AIAA Aerospace Sciences Meeting, Kissimmee, FL. January 2015

5. Lewis, S., Morgan, R., McIntyre, T., Alba, C., Greendyke, R. “Comparison of Carbon Ablation Shock-Layer Radiation with High Surface Temperatures,” AIAA Paper No. 2015-2348, 45th AIAA Thermophysics Conference, Dallas, TX. June 2015

6. Kaplan, S. and Greendyke, R., “Measurement of the Electromechanical Response of Capacitors in Dynamic  Loading Conditions”, Society of Experimental Mechanics 2015 Annual Conference and Exhibition, Costa Mesa, CA, 11 June 2015

7. Alba, C., Greendyke, R., Lewis, S., Morgan, R., and McIntyre, T., “Comparison of Carbon Ablative Shock-Layer Radiation under Earth Re-entry Conditions”, 40th AIAA Dayton-Cincinnati Aerospace Science Symposium, Dayton, OH. March 2015 [Winner, Best CFD Paper 2015]

8. Alba, C., Greendyke, R., Lewis, S., De Crombrugghe de Looringhe, G., Eichmann, T., and Morgan, R., “Investigation of Surface Radiation in Earth Re-entry Flows with Graphite Ablation”, 6th Ablation Workshop, 24th-28th November 2014, St Andrews, UK

9. Alba, C., Greendyke, R., Lewis, S., De Crombrugghe de Looringhe, G., Eichman, T., and Morgan, R., “Investigation of Surface Radiation in Earth Re-entry Flows with Graphite Ablation,” 39th AIAA Dayton-Cincinnati Aerospace Science Symposium, Dayton, OH. March 2014 [Winner, Best CFD Paper 2014]

10. Alba, C., Greendyke, R., Lewis, S., De Crombrugghe de Looringhe, G., Eichman, T., and Morgan, R., “Investigation of Surface Radiation in Earth Re-entry Flows with Graphite Ablation,” 6th Ablation Workshop, Champaign, IL. April 2014

11. Martin, C. and Greendyke, R., “Coupled Radiation-Gasdynamic Solution Methodology with a Multispecies-Multitemperature Thermal Model,” AIAA 2012-1147, 50th AIAA Aerospace Sciences Meeting, Nashville, TN, January 2012.

12. Summers, S. and Greendyke, R., “Improved Collision Modeling for Direct Simulation Monte Carlo,” AIAA 2012-0652, 50th AIAA Aerospace Sciences Meeting, Nashville, TN, January 2012.

13. Jelic, R., Scherer, S., Greendyke, R., “Simulation of Various Turret configurations at Subsonic and Transonic Flight Conditions using OVERFLOW,” AIAA 2012-0464, 50th AIAA Aerospace Sciences Meeting, Nashville, TN, January 2012.

14. Bentley, B., and Greendyke, R., “New Method of Calculating Adsorption and Scattering for Xe-Pt(111) Using Direct Simulation Monte Carlo Techniques,” Directed Energy Professional Society Symposium, Hagerstown, MD, April 2012.

15. Shackelford, W., and Greendyke, R., “Target Motion and Weaponeering,” Joint Technical Coordinating Group for Munitions Effectiveness, DAWG Meeting, March 2012.

16. Greendyke, R.B. and Summers, S. E., “A Smoothed Accept-Reject Algorithm for Collisional Modeling in DSMC,” 10th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, Chicago, IL, June 2010.

17. Martin, C.L. and Greendyke, R.B., “Two-Temperature vs. Multi-Species, Multi-Temperature Thermal Modeling Techniques in Nonequilibrium Radiating Shock Layers,” Dayton-Cincinnati Aerospace Sciences Symposium, March 2010.

18. Weaver, A., Alexeenko, A, Greendyke, R, and Camberos, J., “Flowfield Uncertainty Analysis for Hypersonic CFD Simulations,” AIAA Paper 2010-1180, Orlando, FL, January 2010.

19. Callaway, D., Reeder, M, and Greendyke, R., “Photogrammetric Measurement of Recession Rates of Low Temperature Ablators in Supersonic Flow,” AIAA Paper 2010-1216, Orlando, FL, January 2010.

20. Martin, C.L. and Greendyke, R.B., “A Comparative Analysis of Two-Temperature vs. Multi-Species, Multi-Temperature Thermal Modeling Techniques in Radiating Shock Layers,” AIAA Paper 2010-0235. Orlando, FL, January 2010.

21. Camberos, J.A., Greendyke, R.B., Lambe, L.A., “Computational Experiments with Direct Simulation Quasi-Random Monte Carlo,” AIAA Paper 2009-3742, San Antonio, TX, June 2009.

22. Bentley, B.I., Greendyke, R.B., “Investigating Shockwave Structure in Argon and Nitrogen Using the Unified Flow Solver,” Dayton-Cincinnati Aerospace Sciences Symposium, February 2009.

23. Komives, J.R., Greendyke, R.B., “Development of Non-uniform Radiation Solution Methods for Atmospheric Re-entry Using Detailed Thermal Modeling,” Dayton-Cincinnati Aerospace Sciences Symposium, February 2009.

24. Callaway, D.W., Reeder, M.F., Greendyke, R.B., “Photogrammetric Measurement of Recession Rates of Low Temperature Ablators,” Dayton-Cincinnati Aerospace Sciences Symposium, February 2009.

25. Bagg, M.G., Greendyke, R.B., “Computational Analysis of Strut Induced Mixing in a Scram-Jet,” AIAA Paper 2009-1253, Orlando, FL, January 2009.

26. Pohlman, M.R., Greendyke, R.B., “Critical Design Parameters for Pylon-Aided Gaseous Fuel Injection,” AIAA Paper 2009-1422, Orlando, Fl, January 2009.

27. Komives, J.R., Greendyke, R.B., “Development of Coupled Flowfield-Radiation Solution Methods in Ablative Environments,” AIAA 2009-1031, Orlando, FL, January 2009.

28. Bentley, B.I., Greendyke, R.B., “Using the Unified Flow Solver to Investigate the Normal Shock Wave Structure,” AIAA Paper 2009-1541, Orlando, Fl, January 2009.

29. Claycomb, A., Greendyke, R.B., “Extending CFD Modeling to the Transition Regime by Enhanced Thermophysical Modeling,” 40th AIAA Thermophysics Conference, Seattle, WA, June 2008.

30. Camberos, J.A., Greendyke, R.B., Lambe, L.A., “On Direct Simulation Quasi-Monte Carlo Methods,” 40th AIAA Thermophysics Conference, Seattle, WA, June 2008.

31. Callaway, D.W., Reeder, M.F., Greendyke, R.B., “Experimental Studies of Low Temperature Ablation Using Dry Ice,” 15th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Dayton, OH, April, 2008.

32. Claycomb, A., Greendyke, R., Carr, R., Camberos, J., and Branam, R. “Extending the Validity of the Navier-Stokes Equations by Modifying the Constitutive Relations for Nonequilibrium,” AIAA Paper 2008-1264, Reno, NV, January 2008.

33. Camberos, J., Greendyke, R., and Lambe, L., “Direct Simulation Quasi-Monte Carlo,” DSMC ’07, Santa Fe, NM, Sept. 2007.

34. Greendyke, R.B. and Kaplan, C.R., “Simulation of Particulate Motion in Background Gas with Electrophoretic Forces by Hybrid CFD/MD Methods,” AIAA Paper 2006-1190, AIAA 44th Aerospace Sciences Meeting, Reno NV, January 2006.

35. Greendyke, R.B., Stein, T.H., Ray, L.A., Creel, J.R., Payne, B.T., Scott, C.D., “Higher Order Chemistry Models in the CFD Simulation of Laser-Ablated Carbon Plumes,” AIAA Paper 2005-0765, AIAA 43rd Aerospace Sciences Meeting, Reno, NV, January 2005.

36. Greendyke, R.B., Stein, T.H., Ray, L.A., “CFD Simulation of Carbon Laser Ablation with C to C30 Chemical Reaction Mechanisms,” Annual American Physical Society Meeting, Montreal, Quebec, March 2004.

37. Greendyke, R.B., Swain, J.E., Stein, T., Ray, L., and Scott, C.D., “Parametric Factors Affecting Carbon Plume Development in SWNT Laser Ablation Production,” AIAA Paper 2004-0807, AIAA 42nd Aerospace Sciences Meeting, Reno, NV, January 2004.

38. Greendyke, R.B., “An Elastic Collision Model in a Hybrid Direct Simulation Monte Carlo - Molecular Dynamics Code for Aerosol Simulation,” Annual American Physical Society Meeting, Austin, TX, March 2003.

39. Greendyke, R.B., McCaslin, S.E., Hedge, C., Hollingshead, C., “Simulation of Aerosol Deposition by Hybrid DSMC/MD Methods,” AIAA 2003-1029, 41st Aerospace Sciences Meeting, Reno, NV, January 2003.

40. Greendyke, R.B. and Schobeiri, M.T., “Turbine Blade Cooling Simulation in the Gas Turbine Engine Simulation Code GETRAN,” AIAA 2003-1214, 41st Aerospace Sciences Meeting, Reno, NV, January 2003.

41. Greendyke, R.B., “Graduate Level Research from Undergraduate Students: The Lessons Learned by Student and Professor Alike,” Paper 1015, IEEE Frontiers in Education Conference, Boston, MA, November 2002.

42. Greendyke, R.B., Scott, C.D., and Swain, J., “CFD Simulation of Laser Ablation Carbon Nanotube Production,” AIAA 2002-3026, AIAA/ASME 8th Joint Thermophysics and Heat Transfer Conference, St. Louis, MO, June 2002.

43. Greendyke, R.B. and Scott, C.D., “CFD Analysis of Laser-Ablation Carbon Nanotube Plume Flow Dynamics,” Annual APS March Meeting 2002, Indianapolis, IN, March 2002.

44. Greendyke, R.B., Paxson, D.E., Schobeiri, M.T., “Dynamic Simulation of a Wave Rotor Topped Turboshaft Engine,” AIAA 97-3143, 33rd AIAA Joint Propulsion Conference and Exhibit, Seattle, WA, July 6-9, 1997.  Also as NASA TM 107514, July 1997.

45. Greendyke, R.B. and Hartung, L.C., “A Convective and Radiative Heat Transfer Analysis for the FIRE II Forebody,” 24th AIAA Plasmadynamics and Lasers Conference, Orlando, FL, July 6-9, 1993.

46. Gnoffo, P.A., Hartung, L.C. and Greendyke, R.B., “Heating Analysis for a Lunar Transfer Vehicle at Near-Equilibrium Flow Conditions,” AIAA 93-0270, 31st AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, January 11-14 1993.

47. Greendyke, R.B., “A Parametric Analysis of Radiative Structure in Aerobrake Shock Layers,” AIAA 92-2970, 23rd Plasmadynamics and Lasers Conference, Nashville, TN, July 1992.

48. Greendyke, R.B., Gnoffo, P.A., and Lawrence, R.W., “Electron Number Density Profiles for the Aeroassist Flight Experiment,” AIAA 92-0804, AIAA 30th Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6-9, 1992.

49. Greendyke, R.B. and Hartung, L.C., “An Approximate Method for the Calculation of Nonequilibrium Radiative Heat Transfer,” AIAA 90-0135, AIAA 28th Aerospace Sciences Meeting and Exhibit, Reno, NV, January 1990.

50. Carlson, L.A., Bobskill, G.J., and Greendyke, R.B., “Comparison of Vibration Dissociation Coupling and Radiative Heat Transfer Models in Hypersonic Flows,” AIAA 88-2673, AIAA Thermophysics, Plasma Dynamics, and Lasers Conference, San Antonio, TX, June, 1988.

Books:

  1. Scott, C.D., Farhat, S., and Greendyke, R.B., Chapter: “Chemical Reaction Modeling in Fullerene and Nanotube Science and Engineering,” The Handbook of Theoretical and Computational Nanotechnology, American Scientific Publishers, ISBN 1-58883-042-X, October, 2005.

Technical Reports:

  1. Greendyke, R.B., “CFD Simulation of Carbon Nanotubes,” (Hyman, W., Sickorez, D., Miller, M., and Tarkington, W., Editors), NASA Contractor Report on Grants NAG 9-39 and 9-54, Vol. 1, pp. 10-1 to 10-14, Summer, 2001.
  2. Greendyke, R.B., Paxson, D.E., Schobeiri, M.T., “Dynamic Simulation of a Wave Rotor Topped Turboshaft Engine,” NASA TM 107514, July 1997.
  3. Greendyke, R.B., and Gnoffo, P.A., “Convective and Radiative Heating for Vehicle Return from the Moon and Mars,” NASA TM-110185, July 1995.
  4. Hamilton, H.H., Millman, D.R., and Greendyke, R.B., “Finite Difference Solution for Laminar or Turbulent Boundary Layer Flow over Axisymmetric Bodies with Ideal Gas, CF4, or Equilibrium Air Chemistry,” NASA TM-3271, December, 1992.
  5. Hamilton, H.H. and Greendyke, R.B., “Calculation of Convective and Radiative Heating on the Forebody Heatshield of the Aeroassist Flight Experiment Vehicle,” NASA TM-104103, May, 1991.
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