Frink,N.T., Pirzadeh, S.Z, Parikh, P.C., Pandya, M.J., and Bhat, M.K., “The NASA Tetrahedral Unstructured Software System”, The Aeronautical Journal, Vol. 104, No. 1040, October 2000, pp. 491-499.

VGRID Tetrahedral Grid Generator

Kania, L. and Pirzadeh, S. Z., “A Geometrically-Derived Background Function for Automated Unstructured Mesh Generation”, AIAA 2005-5240, June 2005.

Parikh, P., Pirzadeh, S., and Lohner, R., “A Package for 3-D Unstructured Grid Generation, Finite-Element Flow Solutions, and Flow-Field Visualization”, NASA CR-182090, September 1990.

Pirzadeh, S., “Recent Progress in Unstructured Grid Generation “, AIAA 92-0445, January 1992.

Pirzadeh, S., “Structured Background Grids for Generation of Unstructured Grids by Advancing Front Method”, AIAA Journal, Vol. 31, No. 2, February 1993, pp. 257-265.

Pirzadeh, S.: “Viscous Unstructured Three-Dimensional Grids by the Advancing-Layers Method”, AIAA 94-0417, January 1994.

Pirzadeh, S.: “Unstructured Viscous Grid Generation by Advancing-Layers Method”, AIAA 93-3453, August, 1993. Also, AIAA Journal, Vol. 32, No. 8, August 1994, pp. 1735-1737.

Pirzadeh, S., “Three-Dimensional Unstructured Viscous Grids by the Advancing Front Method”, AIAA Journal, Vol. 34, No. 1, January 1996, pp. 43-49.

Pirzadeh, S.: “Progress Toward A User-Oriented Unstructured Viscous Grid Generator”, AIAA 96-0031, January 1996.

Pirzadeh, S. Z.: “An Adaptive Unstructured Grid Method by Grid Subdivision, Local Remeshing, and Grid Movement”, AIAA 99-3255, June, 1999.

GridTool Graphic User Interface

Samareh-Abolhassani, Jamshid, “Unstructured Grid on NURBS Surfaces”, AIAA-Paper 93-3454.

Samareh-Abolhassani, Jamshid, “Unstructured Surface Grid Generation”, NASA CP-10119, pp. 223-251, September 1993.

Samareh-Abolhassani, Jamshid, “Triangulation of NURBS Surfaces”, in Numerical Grid Generation in Computational Fluid Dynamics and Related Fields, ed. Weatherill, N. P., et. al., Pineridge Press, pp. 377-388, 1994.

Samareh, J. A.: “GridTool: A Surface Modeling and Grid Generation Tool”, Proceedings of the Workshop on Surface Modeling, Grid Generation, and Related Issues in CFD Solutions, NASA Lewis Research Center, Cleveland, OH, NASA CP-3291, 1995, May 9-11, 1995,

USM3D Flow Solver

Abdol-Hamid, K. S., Frink, N. T., Deere, K. A., and Pandya, M. J.: “Propulsion Simulations Using Advanced Turbulence Models with the Unstructured-Grid CFD Tool, TetrUSS”, AIAA 2004-0714, January 2004.

Bhat, M.K.: “Parallel Implementation of an Unstructured Grid-Based Navier-Stokes Solver”, AIAA 99-0663, January 1999.

Frink, N. T., Parikh, P., and Pirzadeh, S., “A Fast Upwind Solver for the Euler Equations on Three-Dimensional Unstructured Meshes”, AIAA 91-0102, Jan. 1991.

Frink, N. T., “Three-Dimensional Upwind Scheme for Solving the Euler Equations on Unstructured Tetrahedral Grids”, Ph. D. Dissertation, Virginia Polytechnic Institute and State University, September 1991.

Frink, N. T.: “Upwind Scheme for Solving the Euler Equations on Unstructured Tetrahedral Meshes.” AIAA Journal, Vol., No. 1, January, 1992, pp. 70-77.

Frink, N. T., “Recent Progress Toward a Three-Dimensional Unstructured Navier-Stokes Flow Solver”, AIAA 94-0061, January 1994.

Frink, N. T., “Assessment of an Unstructured-Grid Method for Predicting 3-D Turbulent Viscous Flows”, AIAA 96-0292, January 1996.

Frink, N. T., “Tetrahedral Unstructured Navier-Stokes Method for Turbulent Flows”, AIAA Journal, Vol. 36, No. 11, November 1998, pp. 1975-1982.

Frink, N.T., Bonhaus, D.L., Vatsa, V.N., Bauer, S.X.S, Tinetti, A.F., “A Boundary Condition for Simulation of Flow Over Porous Surfaces”, Journal of Aircraft, Vol. 40, No. 4, July-August 2003, pp. 692-698. (Download Conference Paper)

Pandya, M. J.: “Low-Speed Preconditioning for an Unstructured Grid Navier-Stokes Solver”, AIAA 99-3134, June 1999.

Pandya, M. J. and Frink, N. T.: “Agglomeration Multigrid for an Unstructured-Grid Flow Solver”, AIAA 2004-0759, January 2004.

Pandya, M. J. Frink, N.T., Abdol-Hamid, K.S., and Chung, J.J.: “Recent Enhancements to USM3D Unstructured Flow Solver for Unsteady Flows”, AIAA 2004-5201, August, 2004.

Pandya, M.J., Frink, N.T., and Noack, R.W.: “Progress Toward Overset-Grid Moving Body Capability for USM3D Unstructured Flow Solver”, AIAA 2005-5118, June 2005.

Pandya, M.J., Abdol-Hamid, K.S., Campbell, R.L., and Frink, N.T., “Implementation of Flow Tripping Capabiliity in the USM3D Unstructured Flow Solver”, AIAA 2006-0919.

Parikh, P.C., “Application of a Scalable, Parallel, Unstructured-Grid-Based Navier-Stokes Solver”, AIAA 2001-2584, June 2001.

Wang, Q., Massey, S. J., Abdol-Hamid, K. S., and Frink, N. T., “Solving Navier-Stokes Equations with Advanced Turbulence Models on Three-Dimensional Unstructured Grids” , AIAA 99-1056, January 1999.

Wang, Q., Massey, S. J., and Abdol-Hamid, K. S., “Implementation of Advanced Two Equation Turbulence Models in the USM3D Unstructured Flow Solver”, NASA/CR-2000-210102, April 2000, pp. 36, (3.9MB)

Applications of TetrUSS

Bobskill, G. J., Parikh, P. C., Prabhu, R. K., and Tyler, E. D.: ” Aerodynamic Database Development of Mars Smart Lander Vehicle Configurations”, AIAA 2002-4411, August 2002.

Bonhaus, D. L. and Maddalon, D. V.: “Assessment of an Euler-Interacting Boundary Layer Method Using High Reynolds Number Transonic Transport Flight Data” , NASA/TP-1998-208461, August 1998

Campbell, R., Carter, M., Pendergraft, O., Friedman, D., and L. Serrano, L., “Design and Testing of a Blended Wing Body with Boundary Layer Ingestion Nacelles at High Reynolds Numbers (Invited)”, AIAA-2005-0459, January 2005.

Campbell, R. L.: “Efficient Viscous Design of Realistic Aircraft Configurations”, AIAA 98-2539, June 1998.

Carlsen, W.D., “Development of Transonic Area-Rule Methodology”, Journal of Aircraft, Vol. 32, No. 5, pp. 692-698.

Chaffin, M.S. and Pirzadeh, S.Z., “Unstructured Navier-Stokes High-Lift Computations on a Trapezoidal Wing”, AIAA 2005-5084, June 2005.

Deere, K.A. and Pandya, M.J.: “Propulsion Simulations with the Unstructured-Grid CFD Tool TetrUSS”, AIAA 2002-2980, June 2002.

Dodbele, S. S.: “Three Dimensional Aerodynamic Analysis of a High-Lift Transport Configuration” , AIAA 93-3536, August, 1993.

Fouladi, K.: “Unstructured Grids for Sonic-Boom Analysis”, AIAA 93-2929, July, 1993.

Frink, N. T., Parikh, P., and Pirzadeh, S., “Aerodynamic Analysis of Complex Configurations using Unstructured Grids”, AIAA 91-3292, September 1991.

Frink, N. T., Pirzadeh, S., and Parikh, P., “An Unstructured-Grid Software System for Solving Complex Aerodynamic Problems” , NASA CP-3291, pp. 289-308, May 9-11, 1995.

Frink, N.T. and Pirzadeh, S.Z.: “Tetrahedral Finite-Volume Solutions to the Navier-Stokes Equations on Complex Configurations” Int. J. Numer. Meth. Fluids 31 pp. 175-187 (1999). Also as NASA/TM-1998-208961, , December 1998, (HTML Summary)

Frink, N. T. and Pirzadeh, S.: “Unstructured Navier-Stokes Analysis of Full TCA Configuration”, NASA CP-1999-209692, Vol. 1, Part 1, December 1999, pp. 309-327.

Frink, N. T., Allison, D. O., and Parikh, P. C.: “Unstructured Navier-Stokes Analysis of Wind-Tunnel Aeroelastic Effects on TCA Model 2”, NASA/CP-1999-209704/VOL1/PT1, December 1999, pp. 621-640

Ghaffari, F.: “On The Vortical-Flow Prediction Capability Of An Unstructured Grid Euler Solver”, AIAA 94-0163, January, 1994.

Ghaffari, F.,”Unstructured Grid Euler Method Assessment for Longitudinal and Lateral/Directional Stability Analysis of the HSR Reference H Configuration at Transonic Speeds”, NASA/TM-1999-209526, December 1999.

Ghaffari, F.: “Unstructured Grid Viscous Flow Simulation Over High-Speed Research Technology Concept Airplane at High-Lift Conditions”, NASA TP 1999-209718, November 1999. (2.4Mb)

Ghaffari, F., “Unstructured Grid Euler Method Assessment for Aerodynamic Performance Prediction of the Complete TCA Configuration at Supersonic Cruise Speed”, NASA/CP-1999-209692, Vol. 1, Part 1, December 1999, pp. 287-307.

Ghaffari, F., “Unstructured Grid Euler Method Assessment for Longitudinal and Lateral/Directional Aerodynamic Performance Analysis of the HSR Technology Concept Airplane at Supersonic Cruise Speed”, NASA/TP-1999-209543, December 1999.

Goble, B.D. and Hooker, J.R.: “Validation of an Unstructured Grid Euler/Navier-Stokes Code on a Full Aircraft with Propellers”, AIAA 2001-1003, January, 2001.

Green, B. and Chung, J., “CFD Predictions of the Stability and Control Characteristics of the Pre-Production F/A-18E”, AIAA 2005-6122, Aug. 2005.

Hooker, J., “Aerodynamic Development of a Refueling Pod for Tanker Aircraft”, AIAA 2002-2805, June 2005.

Hooker, J., Hoyle, D., and Bevis, D., “The Application of CFD for the Aerodynamic Developement of the C-5M Galaxy”, AIAA 2006-0856, Jan. 2006.

Hunter, C.A., Viken, S.A., Wood, R.M., and Bauer, S.X.S: “Advanced Aerodynamic Design of Passive Porosity Control Effectores”, AIAA 2001-0249, January 2001.

Kern, S. and Bruner, C.: “External Carriage Analysis of a Generic Finned-Store on the F-16 Using USM3D”, AIAA Paper No. 96-2456, June 18-20, 1996.

Kinard, T. A., and Harris, B. W.: “Evaluation of Two Unstructured CFD Methods”, AIAA 94-1877, June 1994.

Kinard, T.A. and Raj, P.: “Euler Technology Assessment for Preliminary Aircraft Design – compressibility Predictions by Employing the Unstructured Grid USM3D Code”, NASA CR-4711, March 1996.

Kinard, T.A., Finley, D.B., and Karman, S.L., Jr.: “Prediction of Compressibility Effects Using Unstructured Euler Analysis on Vortex Dominated Flow Fields”, AIAA 96-2499, June 1996.

Kwon, O. J., and Hah, C.: “Three-Dimensional Unstructured Grid Euler Method Applied to Turbine Blades”, AIAA 93-0196, January, 1993.

Kwon, O.J., and Hah, C.: “Solution of the 3-D Navier-Stokes Equations with a Two-Equation Turbulence Model on Unstructured Meshes Applied to Turbomachinery”, AIAA 94-1833, June 1994.

Lee-Rausch, E.M., Frink, N.T., Mavriplis, D.J., Rausch, R.D., Milholen, R.D.: “Transonic Drag Prediction on a DLR-F6 Transport Configuration Using Unstructured Grid Solvers”, AIAA 2004-0554, January 2004.

Lessard, W. B.: “Subsonic Analysis of 0.04-Scale F-16XL Models Using an Unstructured Euler Code”, NASA TP 3597, 1996.

Londenberg, W.K.: “Computational Assessment of Aft-Body Closure for the HSR Reference H Configuration”, NASA/CR-1999-209521, December 1999.

Michal, T.R.: “Unstructured Grid Assessment for Viscous Flow Simulations”, Wright Laboratory Report WL-TR-97-3079, July 1997.

Mineck, R.E.: “Application of an Unstructured Grid Navier-Stokes Solver to a Generic Helicopter Body – Comparison of Unstructured Grid Results with Structured Grid Results and Experimental Results” , NASA/TM-1999-209510, August 1999, pp. 52, (3MB)

Niewoehner, R.J. and Filbey, J., “Computational Study of F/A-18 E/F Abrupt Wing Stall in the Approach Configuration”, Journal of Aircraft, Vol. 42, No. 6, Nov-Dec 2005, pp. 1516-1522..

Pandya, M. J., Bhat, M., and Parikh, P.: “Application of Unstructured Grid Methodology to Rotorcraft Flows”, AHS-97, Presented at the American Helicoptor Society Rotorcraft Acoustics and Aerodynamics Specialists Meeting, Williamsburg, Virginia, October 28-30, 1997.

Parikh, P., Pirzadeh, S., and Frink, N. T.: “Unstructured Grid Solutions to a Wing/Pylon/Store Configuration”, Journal of Aircraft, Vol. 31, No. 6, November-December, 1994, pp. 1291-1296.

Parikh, P. : “Development of a Modular Aerodynamic Design System Based On Unstructured Grids”, AIAA 97-0172, January 1997.

Parikh, P., Engelund,W., Armand, S., and Bittner, R., “Evaluation of a CFD Method for Aerodynamic Database Development Using the Hyper-X Stack Configuration”, AIAA 2004-5385, August 2004.

Paresh C. Parikh and James Chung, “A Computational Study of the Abrupt Wing Stall (AWS) Characteristics for Various Fighter Jets, Part I, F/A-18E and F-16C”, AIAA 2003-0746, January 6-9, 2003

Parikh, P. and Chung, J., “Computational Study of the Abrupt-Wing-Stall Characteritics of F/A-18E and F-16C”, Journal of Aircraft, Vol. 42, May-June 2005, pp. 600-605.

Pirzadeh, S.Z.: “An Adaptive Unstructured Grid Method by Grid Subdivision, Local Remeshing, and Grid Movement”, AIAA 99-3255, June 1999.

Pirzadeh, S. Z. and Frink, N. T.: ” Assessment of the Unstructured-Grid Software TetrUSS for Drag Prediction on the DLR-F4 Configuration”, AIAA 2002-0839, January 14-17, 2002.

Potsdam, M. A., Intemann, G. A., Frink, N. T., Campbell, R. L., Smith, L. A.,and Pirzadeh, S.: “Wing/Pylon Fillet Design Using Unstructured Mesh Euler Solvers”, AIAA 93-3500, August, 1993.

Raj, P., Kinard, T.A., and S.A. Vermeersch: “Vortical Flow Simulation Using An Unstructured-Grid Euler Method”, ICAS-96-1.4.5, Sorrento, Italy, September 8-13,1996.

Raj, P.: “An Assessment of Unstructured-Grid CFD Methods: COBALT, SPLITFLOW, and USM3D, A Lockheed Martin/Wright Laboratory Cooperative Study”, Lockheed Report LG96ER0031, December 1996.

Singh, K.P., Newman, J.C., III, and Baysal, O.: “Dynamic Unstructured Method for Flows Past Multiple Objects in Relative Motion”, AIAA 94-0058, January 1994.

Singh, K.P., and Baysal, O.: “3-D Unstructured Method for Flows Past Bodies in 6-DOF Relative Motion”, 6th International Symposium of Comp. Flu. Dyn., Sept. 4-8, 1995

Tsung, F._L., Loellbach, J., and Hah, C.: “Developement of an Unsteady Unstructured Navier-Stokes Solver for Stator-Rotor Interaction”, AIAA 96-2668, July 1996.

Wai, J., Herling, W. W., and Muilenburg, D. A., “Analysis of a Joined-Wing Configuration”, AIAA 94-0657, January 1994.

Walsh, J. and Cenko, A.,”USM3D Predictions of NMK-83 Trajectories from the CF-18 Aircraft”, AIAA 2001-2431, June 2001.

Woodson, S.H., Green, B.E., Chung, J.J., Grove, D.V., Parikh, P.C., and Forsythe, J.R., “Understanding Abrupt Wing Stall with Computational Fluid Dynamics”, Journal of Aircraft, Vol. 42, No. 3, May-June 2005, pp. 578-585.

Woodson, S. H. and Bruner, C. W. S. Bruner: “Analysis of Unstructured CFD Codes for the Accurate Prediction of Aircraft Store Trajectories”, AIAA 99-0123, January 1999.

Masters Thesis Based On USM3D

Carlsen, W.D.: “Development of Transonic Area-Rule Methodology”, Master’s Thesis for The George Washington University, June 1994.

Cavallo, P.A.: “Coupling Static Aeroelastic Predictions with an Unstructured- Grid Euler/Interacting Boundary Layer Method”, Master’s Thesis for The George Washington University, July 1995.

Newman, J.C., III: “Flow Simulations About Steady-Complex and Unsteady Moving Configurations Using Structured-Overlapped and Unstructured Grids”, Master’s Thesis for Old Dominion University, May 1994.

Parker, M.W: “Investigating the Control Effectiveness of Passive Porosity on Advanced Military Aircraft using Wind Tunnel Tests and CFD”, Master’s Thesis for The George Washington University, August 2004.

Smith, W.D.: “Improved Pressure and Lift Predictions in Transonic Flow Using an Unstructured Mesh Euler Method with an Interacting Boundary Layer”, Master’s Thesis for The George Washington University, July 1994.
Ph.D. Dissertations Based On USM3D

Frink, N. T.: “Three-Dimensional Upwind Scheme for Solving the Euler Equations on Unstructured Tetrahedral Grids.” Ph.D. dissertation, Virginia Polytechnic and State University, to be defended September 1991. (Download Adobe Reader)

Singh, K.P.: “Dynamic Unstructured Method for Prescribed and Aerodynamically Determined Relative Moving Boundary Problems”, Ph.D. Dissertation for Old Dominion University, August 1995.

Parikh, P., Pirzadeh, S., and Frink, N. T.: “Unstructured Grid Solutions to a Wing/Pylon/Store Configuration Using VGRID3D/USM3D”, AIAA 92-4572, August, 1992