Paul Orkwis

Paul D. Orkwis

Special Assistant to the Dean for International Programs

Engineering Research Cntr

801A

CEAS - Aerospace Eng & Eng Mechanics - 0070

Research Support

Grant: #2001014H5639 Investigators:Orkwis, Paul 09-01-2000 -12-31-2010 General Electric Aviation Turbine Hot Streak Analysis and Model Development Role:PI $1,332,500.00 Closed Level:Industry

Grant: #NCE Investigators:Orkwis, Paul 08-01-2003 -09-30-2004 National Aeronautics and Space Administration Advanced Turbine Cooling and Thermal Management Systems Role:PI $197,500.00 Closed Level:Federal

Grant: #FA95500510175/#1 Investigators:Orkwis, Paul 03-01-2005 -12-31-2005 Department of the Air Force Advanced Neural Network Modeling of Synthetic Jet Flow Fields Role:PI $29,999.00 Closed Level:Federal

Grant: #VA-1-05 Investigators:Orkwis, Paul 06-01-2005 -05-31-2006 Ohio Board of Regents Modeling of Flow Control Devices for System Analysis and Design Role:PI $52,188.00 Closed Level:State of Ohio

Grant: #1003775 Investigators:Orkwis, Paul 08-01-2003 -04-30-2006 National Aeronautics and Space Administration Advanced Turbine Cooling and Thermal Management Systems Role:PI $245,521.00 Closed Level:Federal

Grant: #OSP02124 Investigators:Orkwis, Paul 10-01-2001 -03-31-2002 Department of the Air Force Unsteady Aerodynamic Simulations of Compressor Flow Fields Role:PI $13,867.00 Closed Level:Federal

Grant: #528566 Investigators:Orkwis, Paul 02-01-2000 -07-31-2002 Department of Energy Improved Performance and Durability in Gas Turbines through Airfoil Clocking and Hot Streak Management Role:PI $93,920.00 Closed Level:Federal

Grant: #14H45640/09 Investigators:Orkwis, Paul 09-01-2000 -08-31-2005 General Electric Company Prediction of Compressor Off Design Performance Role:PI $286,500.00 Closed Level:Industry

Grant: #CFD-7 Investigators:Orkwis, Paul 09-16-1999 -03-31-2002 Ohio Board of Regents Graduate Support for Integrated Video Network Teaching Role:PI $29,029.00 Closed Level:State of Ohio

Grant: #PR-UC-01-17 Investigators:Orkwis, Paul 07-01-2001 -06-30-2004 Ohio Board of Regents Flow Physics of Incomplete Combustion Product Interaction with Film Cooling Holes Role:PI $127,476.00 Closed Level:State of Ohio

Grant: #F49620-02-1-0092/2 Investigators:Orkwis, Paul 01-01-2002 -12-31-2004 Department of the Air Force Characterization and Modeling of Synthetic Jet Flow Fields Role:PI $188,453.00 Closed Level:Federal

Grant: #CCRP-98-1-008 Investigators:Orkwis, Paul 10-01-1998 -08-31-1999 Ohio Aerospace Institute Source Term Modeling of Unsteady, Complex Turbomachinery Flows Role:PI $30,000.00 Closed Level:Private Non-Profit

Grant: #PR-AFIT-99-07 Investigators:Orkwis, Paul 06-14-1999 -01-15-2002 Ohio Board of Regents High Cycle Fatigue Unsteady Aerodynamic Analysis Improvements and Flow Physics Role:PI $153,545.00 Closed Level:State of Ohio

Grant: #DAAD199910242 Investigators:Orkwis, Paul 07-01-1999 -12-31-1999 Department of the Army Secondary Saddle Points and Vortex Asymmetry in Three Dimensional Flows Role:PI $9,283.00 Closed Level:Federal

Grant: #USAF-3446-26-SC-0001 Investigators:Orkwis, Paul; Turner, Mark 04-07-2008 -11-06-2008 Department of the Air Force Calculations for Experimental Aircraft Inlet Design Role:PI $30,000.00 Closed Level:Federal

Grant: #AFRL-000000441 Investigators:Orkwis, Paul; Turner, Mark 12-22-2008 -01-26-2010 Department of the Air Force Computational Fluid Dynamic Calculations to Support Shock Wave Boundary Layer Interaction Test Program in TGF Role:PI $146,001.00 Closed Level:Federal

Grant: #PO#AFRL-0000001046 Investigators:Orkwis, Paul; Turner, Mark 10-19-2009 -11-30-2009 Department of the Air Force 2D CFD Simulations to Support Design of AFRL Glass Inlet Role:PI $10,000.00 Closed Level:Federal

Grant: #AFRL-0000001289 Investigators:Orkwis, Paul; Turner, Mark 03-01-2010 -12-31-2011 Air Force Research Laboratory 3D CFD Simulations and Uncertainty Analysis to Support AFRL Mixed Compression Inlet Projects Role:PI $271,493.00 Closed Level:Federal

Grant: #200-18-14A32038 Investigators:Orkwis, Paul 01-01-2011 -12-31-2012 General Electric Aviation Turbomachinery CFD Methods for Compressor Off-Design Modeling and Turbine Bas-Side Temperature Prediction and Aeroacoustics Role:PI $302,000.00 Active Level:Industry

Grant: #AFRL-0000002588 Investigators:Orkwis, Paul; Turner, Mark 01-01-2012 -09-30-2012 Air Force Research Laboratory 3D CFD Simulations to Support AFRL Mixed Compression Inlet Projects Role:PI $146,300.00 Closed Level:Federal

Grant: #200-18-14Q16015 Investigators:Orkwis, Paul 03-22-2012 -12-31-2012 General Electric Aviation Turbomachinery CFD Methods for Compressor Off-Design Modeling and Turbine Gas-Side Temperature Prediction and Aeroacoustics Role:PI $200,000.00 Active Level:Industry

Grant: #TECH 12-096 Investigators:Orkwis, Paul 05-07-2012 -05-07-2015 Ohio Department of Development General Electric Aviation Research Center RDCAP Role:PI $500,000.00 Active Level:State of Ohio

Grant: #200-18-12H13121 Investigators:Orkwis, Paul 01-01-2013 -12-31-2013 General Electric Aviation Turbomachinery CFD Methods for Compressor Off-Design Modeling and Turbine Gas-Side Role:PI $275,000.00 Active Level:Industry

Grant: #13-S2604-04-C20 / FA8650-10-D-3037 Investigators:Orkwis, Paul; Turner, Mark 09-16-2013 -04-07-2014 Air Force Research Laboratory CFD Simulation and Modeling Support of AFRL SWBLI Experiments Role:PI $50,000.00 Awarded Level:Federal

Grant: #PO 200-1J-14J32330 - RFQ 535-USA2014 Investigators:Orkwis, Paul 02-01-2014 -12-31-2014 General Electric - GE Transportation - Aircraft Division Turbomachinery CFD Methods for Compressor Off-Design Modeling and Turbine Gas-Side Temperature Prediction and Aeroacoustics Role:PI $247,000.00 Awarded Level:Industry

Grant: #PO 200-14-14N44250 / 98A-030415 Investigators:Orkwis, Paul 01-01-2015 -12-31-2015 General Electric Aviation Turbomachinery CFD Methods for Compressor Modeling and Aeroacoustics (GE USA 2015) Role:PI $150,000.00 Awarded Level:Industry

Grant: #PO 200-14-14R51217_RFQ 98A-012116 Investigators:Orkwis, Paul 01-01-2016 -12-31-2016 General Electric Aviation Turbomachinery CFD Methods for Compressor Modeling and Aeroacoustics (2016 USA Program) Role:PI $120,000.00 Awarded Level:Industry

Grant: #GE USA_PO 14R51217_RFQ 98A-012116 Investigators:Orkwis, Paul 01-01-2016 -12-31-2016 General Electric Aviation Turbomachinery CFD Methods for Compressor Modeling and Aeroacoustics (2016 USA Program) Role:PI $120,000.00 Active Level:Industry

Grant: #GESS-ARTS Teaming Agreement Investigators:Orkwis, Paul 11-01-2015 -10-31-2020 Trident Vantage Systems, LLC GESS-ARTS Teaming Agreement Role:PI $.00 Active Level:Industry

Grant: #ODHE RAPIDS SW Ohio Investigators:Neff, Glenda; Orkwis, Paul 04-01-2016 -06-30-2018 Ohio Department of Higher Education Additive and Advanced Manufacturing Infrastructure and Training to Support in Demand Occupations in Southwest Ohio Role:PI $418,144.00 Active Level:State of Ohio

Grant: #SICHOP 2016 Investigators:Orkwis, Paul; Rozier, Kristin 01-01-2016 -12-31-2016 National Aeronautics and Space Administration UC CubeCats High Altitude Balloon Launch (Craig Utz) Role:PI $1,477.00 Awarded Level:Federal

Grant: #USAF CRADA FY-DAY-LAB# 16-266-RQ-01 Investigators:Orkwis, Paul; Turner, Mark 06-16-2016 -06-15-2021 Air Force Research Laboratory Development of Algorithms for High Order Accurate CFD Simulations Role:PI $.00 Active Level:Federal

Grant: #RQ-UC-16-15-OC-AFRL / FA8650-12-2-7248 Investigators:Orkwis, Paul 10-01-2016 -12-31-2016 Air Force Research Laboratory High Order Chimera Discontinuous Galerkin Fluid Solver Development Role:PI $15,715.00 Active Level:Federal

Publications

Peer Reviewed Publications

Orkwis P.; Wukie N. (01-01-2019. )Coarsening and filtering for absorbing layers in a discontinuous galerkin method.AIAA Scitech 2019 Forum, ,

Orkwis P.; Yoder D. (01-01-2019. )On the use of optimization techniques for turbulence model calibration.AIAA Scitech 2019 Forum, ,

Andersson N.; Lindblad D.; Orkwis P.; Wukie N. (01-01-2019. )Nonreflecting boundary conditions for the euler equations in a discontinuous galerkin discretization.AIAA Scitech 2019 Forum, ,

Kalagotla D.; Orkwis P.; Turner M. (01-01-2018. )Modeling particle drag in accelerating flows with implications for SBLI in PIV-a numerical analysis.2018 Fluid Dynamics Conference, ,

Orkwis P.; Turner M.; Wukie N. (01-01-2018. )A neumann pressure outlet boundary condition for compressible flows.2018 Fluid Dynamics Conference, ,

Orkwis P.; Turner M.; Ugolotti M.; Wukie N. (01-01-2018. )Discrete-adjoint solver tests and consistency analysis for discontinuous galerkin discretization.2018 Fluid Dynamics Conference, ,

Orkwis P.; Wukie N. (11-12-2017. )Software engineering for efficient development of flexible numerical software.Proceedings of SE-CoDeSE 2017: 1st International Workshop on Software Engineering for High Performance Computing in Computational and Data-Enabled Science and Engineering - Held in conjunction with SC 2017: The International Conference for High Performance Computing, Networking, Storage and Analysis, ,13-17

Orkwis P.; Wukie N. (01-01-2017. )A p-Poisson wall distance approach for turbulence modeling .23rd AIAA Computational Fluid Dynamics Conference, 2017, ,

Orkwis P.; Schrock C.; Wukie N. (01-01-2017. )A Chimera-based, zonal discontinuous Galerkin method .23rd AIAA Computational Fluid Dynamics Conference, 2017, ,

Orkwis P.; Wukie N. (01-01-2016. )On fully-implicit solutions of the time-linearized euler equations in a DG-Chimera solver.22nd AIAA/CEAS Aeroacoustics Conference, 2016, ,

Clark K.; Orkwis P. (01-01-2016. )Numerical comparison of symmetric and asymmetric supersonic wind tunnels .46th AIAA Fluid Dynamics Conference, ,

Orkwis P.; Turner M.; Wukie N. (01-01-2016. )An implicit, discontinuous Galerkin Chimera solver using automatic differentiation .54th AIAA Aerospace Sciences Meeting, ,0 ,

Duncan S.; Orkwis P.; Ugolotti M. (01-01-2016. )CFD investigation of supersonic bleed with discretely modeled holes in Cambridge wind tunnel .54th AIAA Aerospace Sciences Meeting, ,

Orkwis P.; Turner M.; Wukie N. (01-01-2016. )A fully-implicit, Giles-type nonreflecting boundary condition in a DG-Chimera turbomachinery solver .46th AIAA Fluid Dynamics Conference, ,

Duncan S.; Orkwis P.; Ugolotti M. (01-01-2016. )CFD investigation of supersonic bleed with discretely modeled holes in cambridge wind tunnel .46th AIAA Fluid Dynamics Conference, ,

Goerig T.; Orkwis P.; Porter C.; Wcjno J.; Wood T. (01-01-2016. )In-duct assessment of a linearized unsteady navier-stokes scheme for compressor tone noise.22nd AIAA/CEAS Aeroacoustics Conference, 2016, ,

Benek J.; Galbraith M.; Orkwis P.; Turner M. (09-02-2015. )A discontinuous Galerkin scheme for Chimera overset viscous meshes on curved geometries.Computers and Fluids, ,119 ,176-196

Duncan S.; Orkwis P.; Turner M.; Wukie N. (01-01-2015. )Simulations and models for aspiration in a supersonic flow using OVERFLOW.AIAA Journal, ,53 (7 ),2052-2056

Friedlander D.; Georgiadis N.; Orkwis P.; Turner M. (01-01-2015. )Numerical simulations of the University of Michigan shock boundary-layer interaction experiments.AIAA Journal, ,53 (5 ),1134-1145

Babinsky H.; Duncan S.; Oorebeek J.; Orkwis P.; Ugolotti M. (01-01-2015. )Experimental and computational investigations of a normal-hole-bled supersonic boundary layer.AIAA Journal, ,53 (12 ),3726-3736

Benek J.; Galbraith M.; Orkwis P.; Turner M. (07-02-2014. )A Discontinuous Galerkin Chimera scheme.Computers and Fluids, ,98 ,27-53

Benek J.; Galbraith M.; Orkwis P. (01-01-2014. )A 3-D discontinuous Galerkin Chimera overset method .52nd Aerospace Sciences Meeting, ,

Benek J.; Galbraith M.; Orkwis P. (01-01-2014. )A 3-D Discontinuous Galerkin Chimera overset method .52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014, ,

Galbraith M.; Knapke R.; Orkwis P.; Turner M. (01-01-2014. )A high-order implict harmonic balance method for turbomachinery applications .15th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2014, ,

Goerig T.; Orkwis P.; Wojno J.; Wukie N. (01-01-2014. )Evaluation of a time-linearized navier-stokes method for booster tone noise analyses .20th AIAA/CEAS Aeroacoustics Conference, ,

Babinsky H.; Duncan S.; Oorebeek J.; Orkwis P.; Ugolotti M. (01-01-2014. )Comparison of experimental and computational flow structure investigations of a normal-hole bled sup.32nd AIAA Applied Aerodynamics Conference, ,

Athans R.; Noll C.; Orkwis P.; Ratzlaff J.; Saeidi R.; Steuber G. (12-17-2013. )Uncertainty in computed time average gas-side temperatures for an HPT rotor with purge cavities.Proceedings of the ASME Turbo Expo, ,6 B ,

Lee D.; Magnuszewski W.; Noll C.; Orkwis P.; Scott McNulty G.; Tsung F. (11-01-2013. )Tip flow unsteadiness and blade row interactions for a low-speed compressor rotor.Journal of Propulsion and Power, ,29 (6 ),1346-1356

Benek J.; Galbraith M.; Orkwis P. (09-13-2013. )Hole cutting of curved discontinuous galerkin chimera overset meshes using a direct cut method .21st AIAA Computational Fluid Dynamics Conference, ,

Garmann D.; Orkwis P.; Visbal M. (08-19-2013. )Investigation of aspect ratio and dynamic effects due to rotation for a revolving wing using high-fi .51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013, ,

Friedlander D.; Georgiadis N.; Orkwis P.; Turner M. (08-19-2013. )Computational fluid dynamic (CFD) analyses of the university of Michigan's shock boundary-layer inte .51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013, ,

Benek J.; Galbraith M.; Knapke R.; Orkwis P. (08-19-2013. )A Discontinuous Galerkin Chimera scheme with implicit artificial boundaries .51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013, ,

Galbraith M.; Knapke R.; Orkwis P.; Turner M. (08-19-2013. )An implicit Harmonic balance method with a Discontinuous Galerkin spatial scheme .51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013, ,

Apyan A.; Benek J.; Duncan S.; Flenar K.; Orkwis P.; Turner M.; Wukie N. (08-19-2013. )Modeling and simulation of bleed holes in the presence of shock wave/boundary layer interaction .51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013, ,

Garmann D.; Orkwis P.; Visbal M. (04-30-2013. )Comparative study of implicit and subgrid-scale model large-eddy simulation techniques for low-Reyno.International Journal for Numerical Methods in Fluids, ,71 (12 ),1546-1565

Garmann D.; Orkwis P.; Visbal M. (03-19-2013. )Three-dimensional flow structure and aerodynamic loading on a revolving wing.Physics of Fluids, ,25 (3 ),

Garmann D.; Orkwis P.; Visbal M. (12-01-2012. )Numerical investigation of the three-dimensional flow structure about a revolving wing.American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM, ,1 (PARTS A AND B ),1581-1592

Garmann D.; Orkwis P.; Visbal M. (12-01-2012. )Three-dimensional flow structure and aerodynamic loading on a low aspect ratio, revolving wing .42nd AIAA Fluid Dynamics Conference and Exhibit 2012, ,

Duncan S.; Orkwis P.; Turner M.; Wukie N. (12-01-2012. )Comparison of simulations and models for aspiration in a supersonic flow using OVERFLOW.50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, ,

Apyan A.; Benek J.; Duncan S.; Orkwis P.; Tinnaple J.; Turner M. (12-01-2012. )Mixed compression inlet simulations with aspiration.50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, ,

Babinsky H.; Benek J.; DeBonis J.; Oberkampf W.; Orkwis P.; Turner M.; Wolf R. (04-01-2012. )Assessment of computational fluid dynamics and experimental data for shock boundary-layer interactio.AIAA Journal, ,50 (4 ),891-903

Benek J.; Galbraith M.; Orkwis P. (12-13-2010. )Automated quadrature-free discontinuous Galerkin method with a tailored recovery formulation .48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, ,

Apyan A.; Galbraith D.; Galbraith M.; Orkwis P.; Turner M. (12-13-2010. )Preliminary numerical investigation of a mach 3 inlet configuration with and without aspiration and .48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, ,

Driscoll J.; Eagle E.; Galbraith D.; Galbraith M.; Orkwis P.; Turner M. (12-02-2010. )Design of a glass supersonic wind tunnel experiment for mixed compression inlet investigations .40th AIAA Fluid Dynamics Conference, ,

Babinsky H.; DeBonis J.; Oberkampf W.; Orkwis P.; Turne M.; Wolf R. (01-01-2010. )Assessment of CFD models for shock boundary-layer interaction.28th AIAA Applied Aerodynamics Conference, ,1 ,

Benek J.; Galbraith M.; Orkwis P. (12-01-2009. )Multi-row micro-ramp actuators for shock wave boundary-layer interaction control .47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, ,

Galbraith M.; Orkwis P. (12-01-2008. )Transport equation for deterministic stresses .46th AIAA Aerospace Sciences Meeting and Exhibit, ,

Noll C.; Orkwis P.; Ratzlaff J.; Steuber G. (12-01-2008. )Analysis of lumped deterministic source terms and their sub-components in a stage 1 high pressure tu.Proceedings of the ASME Turbo Expo, ,6 (PART C ),2693-2703

Fu-Lin Tsung; Lee D.; Magnuszewski W.; Noll C.; Orkwis P. (12-01-2008. )Effect of temporal accuracy on the numerical prediction of an isolated transonic rotor at near stall.Proceedings of the ASME Turbo Expo, ,6 (PART A ),719-730

Lee D.; Magnuszewski W.; McNulty G.; Noll C.; Orkwis P.; Tsung F. (12-01-2008. )Numerical investigation on the effects of self-excited tip flow unsteadiness and blade row interacti.Proceedings of the ASME Turbo Expo, ,6 (PART A ),681-694

Daviaux T.; Orkwis P. (12-01-2006. )On the grid insensitivity of an advanced neural network based model for synthetic jet flow fields .Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting, ,6 ,3832-3844

Dehmer J.; Orkwis P.; Wagner R. (12-01-2006. )On the use of hot 'coolant' in film cooling effectiveness studies .Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting, ,1 ,302-320

Lukovic B.; Orkwis P.; Sekar B.; Turner M. (07-01-2006. )Neural network modeling of deterministic unsteadiness source terms.AIAA Journal, ,44 (7 ),1609-1616

Orkwis P.; Ratzlaff J.; Sekar B. (11-23-2005. )A numerical study of 3D turbulent cooling jet interaction over a range of blowing ratios, turbulence.Proceedings of the ASME Turbo Expo, ,3 PART A ,689-705

Orkwis P.; Ratzlaff J.; Sekar B. (12-01-2004. )A numerical study of 3D turbulent cooling jet interaction over a range of blowing ratios .34th AIAA Fluid Dynamics Conference and Exhibit, ,

King P.; Maple R.; Orkwis P.; Wolff J. (01-20-2004. )Adaptive harmonic balance method for nonlinear time-periodic flows.Journal of Computational Physics, ,193 (2 ),620-641

Filz C.; Orkwis P. (12-01-2003. )Characterization of dual two dimensional synthetic jets in cross flow at low Mach number .33rd AIAA Fluid Dynamics Conference and Exhibit, ,

Filz C.; Lee D.; Orkwis P.; Turner M. (12-01-2003. )Modeling of two dimensional directed synthetic jets using neural network-based deterministic source .33rd AIAA Fluid Dynamics Conference and Exhibit, ,

King P.; Maple R.; Orkwis P.; Wolff J. (01-01-2003. )Split-domain harmonic balance solutions to Burger's equation for large-amplitude disturbances.AIAA Journal, ,41 (2 ),206-212

Lukovic B.; Orkwis P.; Turner M. (12-01-2002. )Modeling unsteady cavity flows with translating walls .32nd AIAA Fluid Dynamics Conference and Exhibit, ,

Lukovic B.; Orkwis P.; Sekar B.; Turner M. (12-01-2002. )Effect of cavity L/D variations on neural network-based deterministic unsteadiness source terms .40th AIAA Aerospace Sciences Meeting and Exhibit, ,

Barter J.; Orkwis P.; Turner M. (01-01-2002. )Linear deterministic source terms for hot streak simulations.Journal of Propulsion and Power, ,18 (2 ),383-389

Dorney D.; Gupta V.; Orkwis P.; Sondak D. (01-01-2002. )Effects of blade count on linearized and nonlinear hot streak clocking simulations.Journal of Propulsion and Power, ,18 (6 ),1273-1279

Godavarty D.; Orkwis P. (12-01-2001. )Investigating the relationship between flow field saddles and vortex asymmetry .39th Aerospace Sciences Meeting and Exhibit, ,

Gangwar A.; Lukovic B.; Orkwis P.; Sekar B. (12-01-2001. )Modeling unsteadiness in steady cavity simulations part II: Neural network modeling .39th Aerospace Sciences Meeting and Exhibit, ,

Gangwar A.; Lukovic B.; Orkwis P.; Sekar B. (12-01-2001. )Modeling unsteadiness in steady cavity simulations part I: Parametric solutions .39th Aerospace Sciences Meeting and Exhibit, ,

Dorney D.; Gupta V.; Orkwis P.; Sondak D. (12-01-2001. )Effects of blade count on hot streak clocking simulations using linearized and nonlinear methods .37th Joint Propulsion Conference and Exhibit, ,

Hunter S.; Orkwis P. (01-01-2000. )Endwall cavity flow effects on gaspath aerodynamics in an axial flow turbine: Part II-Source term mo.Proceedings of the ASME Turbo Expo, ,1 ,

Barter J.; Orkwis P.; Turner M. (01-01-2000. )Linear deterministic source terms for hot streak simulations.Proceedings of the ASME Turbo Expo, ,1 ,

Disimile P.; Orkwis P. (01-01-1998. )Sound-pressure-level variations in a supersonic rectangular cavity at yaw.Journal of Propulsion and Power, ,14 (3 ),392-398

Chakravarthy S.; Orkwis P.; Peroomian O.; Sekar B. (01-01-1998. )Comparison of three Navier-Stokes equation solvers for supersonic open cavity simulations.AIAA Journal, ,36 (5 ),865-867

Jeng S.; Khosla P.; Orkwis P.; Simitses G.; Slater G.; Walker B. (12-01-1997. )Horizontal and vertical integration of design: An approach to curriculum revision .International Journal of Engineering Education, ,13 (3 ),220-226

Disimile P.; Orkwis P. (01-01-1997. )Effect of yaw on pressure oscillation frequency within Rectangular cavity at mach 2.AIAA Journal, ,35 (7 ),1233-1235

Disimile P.; Orkwis P.; Tarn C. (01-01-1997. )Variations in flow field physics caused by algebraic turbulence model modifications for a supersonic .35th Aerospace Sciences Meeting and Exhibit, ,

Davis S.; Orkwis P.; Sengupta R. (01-01-1997. )Flow field saddles and their relation to vortex asymmetry.Computers and Fluids, ,26 (5 ),505-524

Jeng S.; Khosla P.; Orkwis P.; Slater G.; Wade J.; Walker B. (01-01-1997. )Development of a proposed aerospace engineering curriculum for the twenty-first century .35th Aerospace Sciences Meeting and Exhibit, ,

Disimile P.; Orkwis P.; Tam C. (03-01-1996. )Comparison of Baldwin-Lomax turbulence models for two-dimensional open cavity computations .AIAA Journal, ,34 (3 ),629-631

Orkwis P.; Sengupta R. (01-01-1996. )An efficient numerical technique for capturing saddle points of dispersion relations .Theroretical Fluid Mechanics Conference, ,

Orkwis P.; Vanden K. (01-01-1996. )Comparison of numerical and analytical Jacobians.AIAA Journal, ,34 (6 ),1125-1129

Orkwis P.; Sengupta R. (01-01-1996. )Proving algorithm symmetry for flows exhibiting symmetry breaking.AIAA Journal, ,34 (10 ),2193-2195

Dusing D.; Orkwis P. (01-01-1996. )Numerical issues affecting vortex asymmetries computed with the conical Navier-Stokes equations.Computers and Fluids, ,25 (3 ),319-334

Georgiadis N.; Orkwis P.; Yoder D. (01-01-1996. )Implementation of a two-equation k-? turbulence model in NPARC .34th Aerospace Sciences Meeting and Exhibit, ,

Disimile P.; Orkwis P.; Tam C. (01-01-1996. )Supersonic open cavity flow physics ascertained from algebraic turbulence model simulations .34th Aerospace Sciences Meeting and Exhibit, ,

Disimile P.; Orkwis P.; Tam C. (01-01-1996. )Algebraic turbulence model simulations of supersonic open-cavity flow physics.AIAA Journal, ,34 (11 ),2255-2260

Jeng S.; Khosla P.; Orkwis P.; Simitses G.; Slater G.; Walker B. (12-01-1995. )Educating aerospace engineers for the twenty-first century: results of a survey .ASEE Annual Conference Proceedings, ,1 ,66-75

Jeng S.; Khosla P.; Orkwis P.; Simitses G.; Slater G.; Walker B. (12-01-1995. )Designing a new aerospace engineering curriculum: the process .ASEE Annual Conference Proceedings, ,1 ,76-83

Disimile P.; Orkwis P.; Tarn C. (01-01-1995. )A comparison of several standard turbulence models for 2-D open cavity flow field computations .33rd Aerospace Sciences Meeting and Exhibit, ,

Dailey L.; Jennions I.; Orkwis P. (01-01-1995. )Simulation of laminar-turbulent transition with an explicit navier-stokes flow solver.Journal of Propulsion and Power, ,11 (6 ),1187-1194

Disimile P.; Orkwis P.; Tam C. (01-01-1995. )Observations on using experimental data as boundary conditions for computations.AIAA Journal, ,33 (1 ),176-178

Orkwis P. (01-01-1993. )Comparison of Newton’s and quasi-Newton’s method solvers for the Navier-Stokes equations.AIAA Journal, ,31 (5 ),832-836

Dusing D.; Orkwis P. (01-01-1993. )On computing vortex asymmetries about cones at angle of attack using the conical Navier-Stokes equat .Flight Simulation and Technologies, 1993, ,122-130

George J.; Orkwis P. (01-01-1993. )A comparison of cgs preconditioning methods for newton’s method solvers .11th Computational Fluid Dynamics Conference, 1993, ,328-337

McRae D.; Orkwis P. (01-01-1992. )Newton’s method solver for the axisymmetric Navier-Stokes equations.AIAA Journal, ,30 (6 ),1507-1514

McRae D.; Orkwis P. (01-01-1992. )Newton’s method solver for high-speed viscous separated flowfields.AIAA Journal, ,30 (1 ),78-85

McRae D.; Orkwis P. (01-01-1991. )A Newton’s method solver for the axisymmetric Navier-Stokes equations .10th Computational Fluid Dynamics Conference, 1991, ,

McRae D.; Orkwis P. (01-01-1990. )A Newton’s method solver for the Navier-stokes equations .AIAA 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1990, ,

McRae D.; Orkwis P. (01-01-1987. )Analysis of selected standard implicit schemes with arbitrary mesh movement .8th Computational Fluid Dynamics Conference, 1987, ,738-748