Paul Orkwis

Paul Orkwis

Interim Dean of the College of Engineering & Applied Science
Professor of Aerospace Engineering and Engineering Mechanics

745 Baldwin Hall 
P.O. Box 210070
Cincinnati, OH 45221-0070

Phone: (513) 556-3366
Fax: (513) 556-5038 
Email: paul.orkwis@uc.edu
Website: Gas Turbine Simulation Laboratory

ResearchGate Profile
LinkedIn Profile

Education

  • PhD, 1990: North Carolina State University
  • B.A., 1983: Dowling College

Interests

  • Turbomachinery
  • Automatic Feature Detection
  • Computational Flow Physics
  • Computational Fluid Dynamics
  • Supersonic Flows
  • Unsteady Flows
  • Vortex Dominated Flows
  • Lower Order Modeling

Publications

  1. Orkwis, P.D. and McRae, D.S., “A Newton’s Method Solver for High Speed Viscous Separated Flow Fields,” AIAA Journal, Vol. 30, No. 1, January 1992, pp 78-85.
  2. Orkwis, P.D. and McRae, D.S., “A Newton’s Method Solver for the Axisymmetric Navier-Stokes Equations,” AIAA Journal, Vol. 30, No. 6, June 1992, pp 1507-1514.
  3. Orkwis, P.D., “A Comparison of Newton’s and Quasi-Newton’s Method Solvers for the Navier-Stokes Equations,” AIAA Journal, Vol. 31, No. 5, May 1993, pp 832-836.
  4. Orkwis, P.D. and George, J.H., “A Comparison of CGS Preconditioning Methods for Newton’s Method Solvers,” Neural, Parallel & Scientific Computations, Vol. 2, No. 2, June 1994, pp 177-194.
  5. Orkwis, P.D., Tam, C.-J. and Disimile, P.J., “Observations on Using Experimental Data as Boundary Conditions for Computations,” AIAA Journal, Vol. 33, No. 1, January 1995, pp 176-178.
  6. Orkwis, P.D. of Eberle, A., Rizzi, A. and Hirschel, E.H., “Numerical Solutions of the Euler Equations for Steady Flow Problems,” in SIAM Review, Vol. 37, No. 2, pp 271-272, June 1995.
  7. Dailey, L.D., Jennions, I.K. and Orkwis, P.D., “Simulation of Laminar-Turbulent Transition with an Explicit Navier-Stokes Flow Solver,” Journal of Propulsion and Power, Vol. 11, No. 6, November-December 1995, pp. 1187-1194.
  8. Tam, C.-J., Orkwis, P.D. and Disimile, P.J., “Comparison of Baldwin-Lomax Turbulence Models for 2-D Open Cavity Computations,” AIAA Journal, Vol. 34, No. 3, March 1996, pp. 629-631.
  9. Dusing, D.W. and Orkwis, P.D., “Numerical Issues Affecting Vortex Asymmetries Computed With the Conical Navier-Stokes Equations,” Computers & Fluids, Vol. 25, No. 3, March 1996, pp 319-334.
  10. Vanden, K.J. and Orkwis, P.D., “Comparison of Numerical and Analytical Jacobians,” AIAA Journal, Vol. 34, No. 6, June 1996, pp 1125-1130.
  11. Sengupta, R. and Orkwis, P.D., “Proving Algorithm Symmetry for Flows Exhibiting Symmetry-Breaking,” AIAA Journal, Vol. 34, No. 10, October 1996, pp. 2193-2195.
  12. Tam, C.J., Orkwis, P.D. and Disimile, P.J., “Algebraic Turbulence Model Simulations of Supersonic Open Cavity Flow Physics,” AIAA Journal, Vol. 34, No. 11, November 1996, pp. 2255-2260.
  13. Orkwis, P.D., Walker, B.K., Jeng, S.M., Khosla, P.K., Slater, G.L. and Simitses, G.J., “Horizontal and Vertical Integration of Design: An Approach to Curriculum Revision,” International Journal of Engineering Education, Vol. 13, No. 3, 1997, pp. 220-226.
  14. Disimile, P.J. and Orkwis, P.D., “The Effect of Yaw on the Frequency of Pressure Oscillations within a Rectangular Cavity at Mach 2,” AIAA Journal, Vol. 35, No. 7, July 1997, pp. 1233-1235.
  15. Orkwis, P.D., Sengupta, R. and Davis, S.M., “Flow Field Saddles and Their Relationship to Vortex Asymmetry,”Computers & Fluids, Vol. 26, No. 5, June 1997, pp. 505-524.
  16. Disimile, P.J. and Orkwis, P.D., “Sound Pressure Level Variations in a Supersonic Rectangular Cavity at Yaw,” AIAA Journal of Propulsion and Power, Vol. 14, No. 3, May-June 1998, pp. 392-398.
  17. Orkwis, P.D., Sekar, B., Chakravarthy, S. and Peroomian, O., “Comparison of Three Navier-Stokes Equation Solvers for Supersonic Open Cavity Simulations,” AIAA Journal, Vol. 36, No. 5, May 1998, pp. 865-866.
  18. Orkwis, P., Wlezien, R. and Kimmel, R., “Aerospace Sciences, Fluid Dynamics, Air and Space ‘98, The Year in Review,” Aerospace America, Vol. 36, No. 12, December 1998, pp. 20-21.
  19. Walker, B.K., Jeng, S.M., Orkwis, P.D., Slater, G.L., Khosla, P.K. and Simitses, G.J., “Educating Aerospace Engineers for the Twenty-First Century: Results of a Survey,” Journal of Engineering Education, Vol. 87, No. 4, October, 1998, pp. 481-487.
  20. Kimmel, R., Orkwis, P., and Lurie, E.,“Aerospace Sciences, Fluid Dynamics, Air and Space ‘99, The Year in Review,” Aerospace America, Vol. 37, No. 12, December 1999.
  21. Kimmel, R., Orkwis, P., Smith, D. and Lurie, E.,“Fluid Dynamics Enters the 21st Century,” Aerospace America, Vol. 38, No. 11, November 2000.
  22. Orkwis, P.D., Turner, M.G., and Barter, J.W., “Linearized Unsteady Solution Based Deterministic Source Terms for Hot Streak Simulations,” AIAA Journal of Propulsion and Power, Vol. 18. No. 2, March-April 2002, pp. 383-389.
  23.  Sondak, D.L., Gupta, V., Orkwis, P.D., and Dorney, D.J., “Effects of Blade Count on Hot Streak Clocking Simulations Using Linearized and Nonlinear Methods,” AIAA Journal of Propulsion and Power, Vol. 18, No. 6, November-December 2002, pp. 1273-1279.
  24. Maple, R.C., King, P.I., Wolff, J.M., and Orkwis, P.D., “Split-Domain Harmonic Balance Solutions to Burger’s Equation for Large Amplitude Disturbances,”AIAA Journal, Vol. 41, No. 2, February 2003, pp. 206-212.
  25. Maple, R.C., King, P.I., Orkwis, P.D., and Wolff, J.M., “Adaptive Harmonic Balance Method for Nonlinear Time-Periodic Flows,” Journal of Computational Physics, Vol. 193, No. 2, January 2004, pp. 620-641.
  26. Lukovic, B., Orkwis, P.D., Turner, M.G., and Sekar, B., “Neural Network Modeling of Deterministic Unsteadiness Source Terms,” AIAA Journal, Vol. 44, No. 7, July 2006, pp. 1609-1616.
  27. DeBonis, J., Oberkampf, W., Wolf, R., Orkwis, P.D., Turner, M.G., Babinsky, H., “Assessment of CFD and Experimental Data for Shock Boundary Layer Interaction,” AIAA Journal, Vol. 50, No. 4, April 2012, pp. 891-903.
  28. Garmann, D.J., Visbal, M.R., and Orkwis, P.D., “Comparative Study of Implicit and Subgrid-Scale Model LES Techniques for Low-Reynolds Number Airfoil Applications,” International Journal for Numerical Methods in Fluids, Vol. 71, No. 12, 2013, pp. 1546-1565.
  29. Garmann, D.J., Visbal, M.R., and Orkwis, P.D., “Three-dimensional Flow Structure and Aerodynamic Loading on a Revolving Wing,” Physics of Fluids, Vol. 25, No. 3, March 2013.
  30. Lee, D., Orkwis, P.D., Tsung, F.-L., Magnuszewski, W., Noll, C., and McNulty, G.S., “Effects of Tip Unsteadiness and Blade Row Interactions on Low-Speed Compressor Performance,” AIAA Journal of Propulsion and Power, (2013), volume 29, issue 6, pp. 1346-1356. Accessed August 17, 2013. doi: 10.2514/1.B34599.
  31. Galbraith, M.C., Benek, J.A., Orkwis, P.D., and Turner, M.G., “A Discontinuous Galerkin Chimera Scheme,” Computers & Fluids, (2014), doi:10.1016/j.compfluid.2014.03.014.
  32. Friedlander, D.J., Georgiadis, N.J., Turner, M.G., and Orkwis, P.D., “Numerical Simulations of the University of Michigan Shock Boundary-layer Interaction Experiments,” AIAA Journal (2015), volume 53, issue 5, pp. 1134-1145.
  33. Wukie, N.A., Orkwis, P.D., Turner, M.G., and Duncan, S., “Simulations and Models for Aspiration in a Supersonic Flow Using OVERFLOW,” AIAA Journal, doi: 10.2514/1.J053214. http://arc.aiaa.org/doi/abs/10.2514/1.J053214.
  34. Galbraith, M.C., Benek, J.A., Orkwis, P.D., and Turner, M.G., “A Discontinuous Galerkin Scheme for Chimera Overset Viscous Meshes on Curved Geometries,” Computers and Fluids, http://dx.doi.org/10.1016/j.compfluid.2015.07.002.
  35. Oorebeek, J.M., Babinsky, H., Ugolotti, M., Orkwis, P., Duncan, S., “Experimental and Computational Investigations of a Normal-Hole Bled Supersonic Boundary-Layer,” AIAA Journal, doi: 10.2514/1.J053956, http://arc.aiaa.org/doi/abs/10.2514/1.J053956.
  36. Orkwis, P.D., “Globalization and Cooperative Education at the University of Cincinnati,” Journal of Polish-American Science and Technology, Vol. 10, May 2016.

Professional Activities

  • Winner, 2001 ASME Joint Propulsion Conference Best Paper Award, authored by D.L. Sondak, V. Gupta, P.D. Orkwis, and D.J. Dorney, "Effects of Blade Count on Hot Streak Clocking Simulations Using Linearized and Nonlinear Methods," AIAA Paper 2001-3476, 37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Salt Lake City, Utah, July 2001.
  • Member: AIAA (Associate Fellow), ASME, Sigma Xi, Ohio Aerospace Institute, Dayton Area Graduate Studies Institute, AIAA Fluid Dynamics Technical Committee, ASME Turbomachinery Technical Committee, ASME International Gas Turbine Institute, International Society for Air Breathing Engines, AIAA Dayton-Cincinnati Council-Member at Large, AIAA Congressional Visits Day-Team Ohio
  • Reviewer: AIAA Journal, AIAA Journal of Propulsion and Power, AIAA Journal of Thermophysics and Heat Transfer, ASME International Gas Turbine Institute, Computers and Fluids, International Journal of CFD, SIAM Review, ASME Journal of Fluids Engineering, Arabian Journal of Science and Engineering