Jean- Jacques Chattot Warren & Leta Giedt Professor and Chair of Mechanical and Aeronautical Engineering & Director of Center for Computational Fluid Dynamics B.S. (1968), Engineering, Ecole Nationale Superieure de L'Aeronautique, France PhD. (1971), Mechanical Engineering, University of California at Berkeley, U.S.A. Doctorat es Sciences (1979), Mathematics, Universite de Paris Sud, Orsay, France Mechanical & Aeronautical Engineering University of California, Davis Davis, CA 95616-5294 Office: 2132 Bainer, (530) 752-0812 Lab: UCD_UAV_Group, 1230 Bainer Hall Fax: (530) 752-4158 Email: jjchattot@ucdavis.edu

• ENG-103 (Fluid Mechanics)
• EAE-127 (Applied Aircraft Aerodynamics)
• EME-185 A&B (Senior Design Project)
• MAE-261 (Gas Dynamics)
• MAE-263 (Introduction to Computational Aerodynamics and Fluid Dynamics)

Transonic flows and flows with vortical structures, computational methods, mesh generation, applied aircraft aerodynamics, winglets, wind turbines.

1972

Application of the Hodograph Method to Transonic Flows with Shocks, M. Holt and J. J. Chattot, Proc. 3rd International Conference of Numerical Methods in Fluid Dynamics, Paris. Springer-Verlag, Lecture Notes in Physics, 19.

Transonic Flows with Shock Waves: Review of the Methods for Computing flows of Perfect Fluids Past Profiles, J. J. Chattot, D. Guiraud, and P. Laval, ONERA Technical Report, no. 1/0114 AY.

Transonic Flows with Shocks: The Method of Murman-Cole-Krupp for Solving the Transonic Small Disturbance Potential Equation, J. J. Chattot, ONERA Technical Report, no. 3/0114 AY.

Experimental and Theoretical Studies of Transonic Flows Past a Half Profile, J. Delery, P. Laval, and J. J. Chattot, 10th Colloquium of Applied Aerodynamics, Lille, France.

Coupling Between the Flow Past an After-Body and a Propulsive Jet of Perfect Fluids, J. J. Chattot and G. Gillon, AGARD Meeting, ONERA Technical Report, no. 1399, Rome, Italy.

Preliminary Study of Transonic Flows Past Helicopter Rotor Blade Tips, J. J. Philippe and J. J. Chattot, ONERA Technical Report, no. 41/1369 AN.

Viscous Interaction with Separation in Transonic Flow, J. Delery, J. J. Chattot and J. C. LeBalleur, AGARD Meeting, Separated Flows, ONERA Technical Report, no. 1975-15, Gottingen.

A Fully Conservative Relaxation Method for Transonic Flows, J. J. Chattot, Proceedings, Symposium Transsonicum II, La Recherche Aerospatiale no. 1975-6, pp 339-346, ONERA Technical Report, no. 1975-93F, Gottingen, September, English version available as Technical Report no. 1975-93E.

Relaxation Approach for the Euler Equations in Transonic Flow, J. J. Chattot, Proceedings, 3rd AIAA Computational Fluid Dynamics Conference, AIAA Paper, no. 77-636, ONERA Technical Report, no. 1977-41, Albuquerque, New Mexico, June.

Uniqueness Condition for Irrotational Compressible Flows of Perfect Fluids, J. J. Chattot, Comptes Rendus de l'Academie des Sciences, t. 286-A, pp 111-113. ONERA Technical Report, no. 1978-11.

Transonic Flows Past Wings, J. J. Chattot, C. Coulombeix, and V. Schmitt, DGLR Meeting, Transonic Configurations, ONERA Technical Report, no. 1978-67, Bad-Harzburg.

Calculation of Transonic Flows Past Wings, J. J. Chattot, C. Coulombeix, and C. da Silva Tome, La Recherche Aerospatiale, no. 1978-4, pp 143-159. ONERA Technical Report, no. 1978-125.

Symmetrical Flow Past a Double Wedge at High Subsonic Mach Numbers, J. J. Chattot, Journal of Fluid Mechanics 86(1):161-177.

Numerical Solution of a Conservation Equation by a Variational Approach, J. J. Chattot, J. Laminie, and J. Guiu-Roux, Proceedings, 6th International Conference on Numerical Methods in Fluid Dynamics, ONERA Technical Report, no. 1978-62. Lecture Notes in Physics, Springer-Verlag, 1979, Tbilisi, USSR.

Steady Transonic Flows Calculated by Relaxation Methods, J. J. Chattot, Proceedings, 14 Biennial Fluid Dynamics Symposium, Fluid Dynamics Transactions, Vol. 10. ONERA Technical Report, no. 1979-135, Blazejewko, Poland.

Relaxation Method for the Full Potential Equation, J. J. Chattot and C. Coulombeix, Proceedings, GAMM Workshop on the Computation of Inviscid Transonic Flows with Shocks, ONERA Technical Report, no. 1979-154, Stockholm, Sweden.

Variational Method for Hyperbolic and Mixed Problems of First Order, J. J. Chattot, Proceedings, 4th International Colloquium on Numerical Method, Lecture Notes in Mathematics, Springer-Verlag. ONERA Technical Report, no. 1979-152, Versailles.

Finite Element Calculation of Steady Transonic Flow in Nozzles Using Primary Variables, J. J. Chattot, J. Guiu-Roux and J. Laminie, Proceedings, 7th International Conference on Numerical Methods in Fluid Dynamics, Stanford, CA and NASA/Ames, June. ONERA Technical Report, no. 1980-70. Lecture Notes in Physics, 141, Springer-Verlag.

Experimental and Theoretical Studies on Helicopter Blade Tips at Onera, J. J. Philippe and J. J. Chattot, Proceedings, 6th European Rotorcraft and Powered Lift Aircraft Forum, Bristol, England, Septermber, ONERA Technical Report, no. 1980-96.

Pressure Distribution Computation on a Non-Lifting Symmetrical Helicopter Blade in Forward Flight, J. J. Chattot and J. J. Philippe, La Recherche Aerospatiale, no. 1980-5, English version available.

Calculation of Three-Dimensional Unsteady Transonic Flows Past Helicopter Blades, J. J. Chattot, Aerodynamics Laboratory, AVRADCOM Research and Technology Laboratories, NASA TP 1721, AVRADCOM TR 80-A-2, Ames Research Center, Moffett Field, CA., October.

Methode Variationnelle Pour Les Problemes Hyperboliques et Mixtes du Premier Ordre, J. J. Chattot, Computing Methods in Applied Sciences and Engineering, R. Glowinski, J.L. Lions, eds., North-Holland Publishing Company.

Finite Difference and Finite Element Solutions of the Full Potential Equation in Two Dimensions, J. J. Chattot and C. Coulombeix, Proceedings, 4th GAMM Conference on Numerical Methods in Fluid Mechanics, Paris, France, October. ONERA Technical Report, no. 1981-136.

Finite Element Least Square Method for Solving Full Steady Euler Equations in a Plane Nozzle, C. H. Bruneau, J. J. Chattot, J. Laminie, and J. Guiu-Roux, Proceedings, 8th International Conference on Numerical Methods in Fluid Dynamics, Aachen, Germany. Lecture Notes in Physics, No. 170, pp 161-166, E. Krause, ed., Springer-Verlag.

Also in: Springer-Verlag, 1983.

Numerical Solution of a First-Order Conservation Equation by a Least Square Method, J. J. Chattot, J. Guiu-Roux and J. Laminie, International Journal of of Numerical Methods in Fluids 2:209-219.

Finite Element Least Square Methods for Problems of Mixed-Type, C. H. Bruneau, J. J. Chattot, J. Laminie, and J. Guiu-Roux, Proceedings, 4th International Conference on Finite Element Methods in Fluid Flow, Tokyo, Japan, July, T. Kawai, editor, University of Tokyo Press.

Numerical Methods for Three-Dimensional Inviscid Flow Computation, J. J. Chattot, Proceedings, 10th IMACS World Congress on Systems Simulation and Scientific Computation, Montreal, Canada, Vol. 1, August.

Numerical Solutions of the Euler Equations with Separation by a Finite Element Method, C. H. Bruneau, J. J. Chattot, J. Laminie and R. Temam, Proceedings, 9th International Conference on Numerical Methods in Fluid Dynamics, Saclay, France, June. Springer-Verlag, 1985.

Solution of the Euler Equations for Missiles Configurations, J. J. Chattot, C. Koeck and E. Elsaesser, Proceedings, 6th GAMM Conference on Numerical Methods in Fluid Mechanics, Gottingen, Germany, September.

Simulation d'un Systeme de Deviation de Jet a L'aide des Equations d' Eulers, M. Bredif, J. J. Chattot, C. Koeck and P. Werle, AGARD CP, no. 412, November.

Comparaison Theorie-Experience Pour le Calcul de Missiles, M. Bredif, J. J. Chattot, M. L. Erhart and A. Lupieri, 23rd Colloque d' Aerodynamique Appliquee, Modane, France, November.

Numerical Solutions of the Euler Equations with Separation, J. J. Chattot, Proceedings, High Speed Aerodynamics I, A. Nastase, ed., Haag and Herchen.

A Box-Scheme for the Euler Equations, J. J. Chattot and Sylvie Malet, Nonlinear Hyperbolic Problems: Proceedings of an Advanced Research Workshop, Saint-Etienne, France, January 13-17, 1986. Lecture Notes in Mathematics, Springer-Verlag no. 1270, 1987.

Computation of Vortex Flow Past a Flat Plate at High Angle of Attack, C. H. Bruneau, J. J. Chattot, J. Laminie and R. Temam, Proceedings, 10th International Conference on Numerical Methods in Fluid Dynamics, Beijing, China. Lecture Notes in Physics, Springer-Verlag no. 264, 1987.

Numerical Methods: Euler Time Dependent Solver, J. J. Chattot, Special Course on Missile Aerodynamics, V.K.I., Rhode-Saint-Genese, Belgium, March. AGARD Report no. 754, April.

Some Validations by Experimental Results in Hypersonic Flow Computations, J. P. Bez, J. J. Chattot and F. Noel, Aerospace Vehicle Conference, Annapolis, Maryland, April. S.A.E. Paper no. 88- 0925.

Computation of 3-D Vortex Flows Past a Flat Plate at Incidence Through a Variational Approach of the Full Euler Equations, C. H. Bruneau, J. Laminie and J. J. Chattot, International Journal for Numerical Methods in Fluids 9:305-323.

Computation of Hypersonic Vortex Flows with an Euler Model, C. H. Bruneau, J. Laminie and J. J. Chattot, Proceedings, 11th International Conference on Numerical Methods in Fluid Dynamics, Williamsburg, VA, June.

1991

Box Schemes and Their Implementation on the IPSC/860, J. J. Chattot and M. L. Merriam, Proceedings, 10th Computational Fluid Dynamics Conference, June 24-26, Honolulu, HI.

Numerical Investigation of Boundary Conditions for Electromagnetic Diffraction and Edge Singularities, M. D. White and J. J. Chattot, Poster and Paper, Fourth International Symposium on Computational Fluid Dynamics, Davis, CA, Sept. 9-12.

Computations of the Scattering of a TM Plane Wave from a Perfectly Conducting Square: Comparisons of Yee's Algorithm, Lax-Wendroff Method and Ni's Scheme, Y. Zhu and J. J. Chattot, Poster, Fourth International Symposium on Computational Fluid Dynamics, Davis, CA, Sept. 9-12.

Numerical Reflecting Boundary Conditions and Treatment of Edge Singularities for Electromagnetic Diffraction in the Time Domain, M. D. White and J. J. Chattot, Proceedings, IEEE Antennas and Propagation Society International Symposium, Chicago, IL, July 18-25.

Computations of the Scattering of a TM Plane Wave from a Perfectly Conducting Square: Comparisons of Yee's Algorithm, Lax-Wendroff Method and Ni's Scheme, Y. Zhu and J. J. Chattot, Proceedings, IEEE Antennas and Propagation Society International Symposium, Chicago, IL, July 18-25.

Implementation of Cell-Vertex Schemes on a Massively Parallel Computer, J. J. Chattot, Proceedings, 13th International Conference on Numerical Methods in Fluid Dynamics, Rome, Italy, July 6-10, Springer-Verlag, Lectures Notes in Physics, no. 414.

Investigation of the Use of a Finite Volume Scheme with Edge Singularities and Applications of Chimera for Electromagnetic Diffraction in the Time Domain, M. D. White and J. J. Chattot, Proceedings, 5th Annual Review of Progress in Applied Computational Electromagnetism, Monterey, CA, March 22-26.

Box Schemes for First Order Partial Differential Equations, J. J. Chattot, Computational Fluid Dynamics Techniques, Gordon Breach Publishers.

The Application of a Finite Difference/Finite Volume Algorithm to Solve Maxwell's Equations in the Timer Domain, M. D. White and J. J. Chattot, International Journal of Computational Fluid Dynamics, Vol. 5, pp. 81-98.

Implementation of a nonequilibrium Flow Solver on a Massively Parallel Computer, J. M. Pallis and J. J. Chattot, Proceedings of the 14th International Conference on Numerical Methods in Fluid Dynamics, Bengalore, India, 1994. Springer-Verlag, Lecture Notes in Physics, No. 453.

Parallel Implementation of a Chemical Nonequilibrium Flow Solver on MPPs, J. M. Pallis and J. J. Chattot, Proceedings of the International Workshop on Solution Techniques for Large Scale CFD Problems, Montreal, Quebec, Canada, 1994. John Wiley and Sons, Computational Methods in Applied Sciences.

A Parallel Implementation of a PNS Flow Solver with a Design Optimizer, J. M. Pallis and J. J. Chattot, Proceedings of the 6th International Symposium on Computational Fluid Dynamics, Lake Tahoe, Nevada.

Three-Dimensional Chimera Simulation with an Inviscid Flow Solver, J. J. Chattot and Y. Wang, Proceedings of the 6th International Symposium on Computational Fluid Dynamics, Lake Tahoe, Nevada.

Parallelization of a Parabolized Navier-Stokes Solver with a Design Optimizer, J. M. Pallis, J. J. Chattot and S. L. Lawrence, 34th Aerospace Sciences Meeting and Exhibit, Reno, Nevada. AIAA Paper No. 96-0549.

Mid-Edge Box-Schemes for Hyperbolic PDE's, F. Alcrudo and J. J. Chattot, Proceedings of the First International Symposium on Finite Volumes for Complex Applications, Rouen, France, July 15-18, 1996. Hermes.

Assessing Grid Quality of Structured Meshes by Truncation Error Analysis, K. K. Okamoto, G. H. Klopfer and J. J. Chattot, Proceedings of the 15th International Conference on Numerical Methods in Fluid Dynamics, Monterey, California, June 24-28, 1996. Springer-Verlag, Lecture Notes in Physics, No. 490.

System Analysis Projects in Elementary Fluid Mechanics, J. J. Chattot, Proceedings of Advances in Flow Simulation Techniques, Davis, California, May 2-4.

Improved Treatment of Intersecting Bodies with the Chimera Method and Validation with a Simple and Fast Flow Solver, J. J. Chattot and Y. Wang, Computers and Fluids, Vol. 27, No. 5-6, June/July.

A Four-Operator Conservative Scheme for the Euler Equations, J. J. Chattot, Frontiers of Computational Fluid Dynamics 1998, World Scientific, D. A. Caughey and M. Hafez (Eds).

A Conservative Scheme for the Euler Equations, J. J. Chattot, Proceedings of the 10th International Conference on Finite Elements in Fluids, Tucson, Arizona, January 5-8, 1998, M. Hafez and J. C. Heinrich (Eds).

Airfoil Design Using Coupled Euler and Integral Boundary Layer Method with Adjoint Based Sensitivities, S. Edwards, J. Reuther and J. J. Chattot, Proceedings of the 16th International Conference on Numerical Methods in Fluid Dynamics, Arcachon, France, July 6-10, Lecture Notes in Physics No. 515, Springer-Verlag, pp.37-42.

A Conservative Box-Scheme for the Euler Equations, J. J. Chattot, International Journal of Numerical Methods in Fluids, No. 31, pp. 149-158.

A Test of Formal Accuracy for Numerical Schemes on Unstructured Meshes, J. J. Chattot, Computational Fluid Dynamics Journal, Vol. 9, No. 1, pp. 237-241.

Optimization in Applied Aerodynamics, J. J. Chattot, Computational Fluid Dynamics Journal, Vol. 9, No. 3, pp. 306-311.

Least-Squares Methods for Laminar Viscous Flow Problems, J. J. Chattot, Proceedings of Computational FLuid Dynamics for the 21st Century, Kyoto, Japan, July 15-17, 2000. Springer-Verlag, Notes on Numerical Fluid Dynamics, Vol. 78, pp. 250-254.

Computational Aerodynamics and Fluid Dynamics - An Introduction, J. J. Chattot, Springer Verlag, Scientific Computation, ISBN 3-540-43494-1. Second printing 2004

Explicit Methods for the Solution of the Generalized Cauchy-Riemann Equations and Simulation of Inviscid Rotational Flows, J. Roy, M. Hafez and J. J. Chattot, Proceedings of State-of-the-Art in Computational Fluid Dynamics, Marseille, France, Sept. 13-14, 1999. Computers and Fluids, Vol. 31, Nos. 4-7.

Optimization of Propellers Using Helicoidal Vortex Model, J. J. Chattot, Proceedings of Numerical Simulation of Incompressible Flows, Half-Moon Bay, California, June 19-21, 2001. World Scientific, M. Hafez (Ed.) Computational Fluid Dynamics Journal, Vol. 10, No. 4, pp. 429-438, January 2002.

Design and Analysis of Wind Turbines Using Helicoidal Vortex Model, J. J. Chattot, Computational Fluid Dynamics Journal, Vol. 11, No. 1, pp. 50-54, April 2002.

A Finite Volume Least-Squares Method, D. Whitlow, J. J. Chattot, Computational Fluid Dynamics Journal, Vol. 11, No. 4, January 2003.

Optimization of Wind Turbines Using Helicoidal Vortex Model, J. J. Chattot, 41st Aerospace Sciences Meeting and Exhibit, 22nd ASME Wind Energy Symposium, Reno, Nevada, January 6-9, 2003. AIAA Paper No. 2003-0522. Journal of Solar Energy Engineering, Special Issue: Wind Energy, Vol. 125, No. 4, pp. 418-424, Nov. 2003.

Helicoidal Vortex Model for Steady and Unsteady Flows, J. J. Chattot, 42nd AIAA Aerospace Sciences Meeting and Exhibit, 23rd ASME Wind Energy Symposium, Reno, Nevada, January 5-8, 2004. AIAA Paper No. 2004-0829.

A Coupled Navier-Stokes/Vortex-Panel Solver for the Numerical Analysis of Wind Turbines, S. Schmitz, J. J. Chattot, Proceedings 3rd International Conference on Computational Fluid Dynamics, Toronto, ON, Canada, July 12-16, 2004. Springer-Verlag Computational Fluid Dynamics, to appear 2005. Also: Computers & Fluids, Vol. 35, No. 7, pp. 742-745, 2006.

Parallel Hybrid-Electric Propulsion System for an Unmanned Aerial Vehicle, F. G. Harmon, A. A. Frank and J. J. Chattot. International Symposium of the Association for Unmanned Vehicle Systems, Anaheim, California.

Analysis and Design of Wings and Wing/Winglet Combinations at Low Speeds, J. J. Chattot, 42nd AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, January 5-8, 2004. AIAA Paper No. 2004-0220. Computational Fluid Dynamics Journal, Vol. 13, No. 3, pp.597-604, 2006.

Computational Aerodynamics and Fluid Dynamics - An Introduction, J. J. Chattot, Springer Verlag, Scientific Computation, ISBN 3-540-43494-1. Second printing 2004

Application of a 'Parallelized Coupled Navier-Stokes/Vortex Panel Solver' to the NREL Phase VI Rotor, S. H. Schmitz and J. J. Chattot, 43rd AIAA Aerospace Sciences Meeting and Exhibit, 24th ASME Wind Energy Symposium, Reno, Nevada, January 10-13, 2005. AIAA Paper No. 2005-0593.

Validation of a Helicoidal Vortex Model with the NREL Unsteady Aerodynamic Experiment, J. M. Hallissy and J. J. Chattot, 43rd AIAA Aerospace Sciences Meeting and Exhibit, 24th ASME Wind Energy Symposium, Reno, Nevada, January 10-13, 2005. AIAA Paper No. 2005-1454. Also: Computational Fluid Dynamics Journal, Special Issue, Vol. 14, No. 3, pp. 236-245, 2005.

Wind Turbine Blade Aerodynamics of the NREL Phase VI Rotor Near Peak Power, S. H. Schmitz and J. J. Chattot, 23rd AIAA Applied Aerodynamics Conference, Toronto, ON, Canada, June 6-9, 2005. AIAA Paper No. 2005-4850.

Influence of the Vortical Wake Behind Wind Turbines Using a Coupled Navier-Stokes/Vortex-Panel Methodology, S. H. Schmitz and J. J. Chattot, Proceedings 3rd MIT Conference on Computational Fluid and Solid Mechanics, Cambridge, MA, June 14-17, 2005.

A Parallelized Coupled Navier-Stokes/Vortex-Panel Solver, Sven Schmitz, J. J. Chattot, Journal of Solar Energy Engineering, Vol. 127, No. 4, pp. 475-487, Nov. 2005.

Optimum Loading of a Wing with a Slit, J. J. Chattot. Journal of Aircraft, Vol. 42, No. 6, pp. 1637-1639, 2005.

2006

Low Speed Design and Analysis of Wing/Winglet Combinations Including Viscous Effects, J. J. Chattot, Journal of Aircraft, Vol. 43, No. 2, March-April 2006, pp. 386-389.

Helicoidal Vortex Model for Steady and Unsteady Flows, J. J. Chattot, Computers & Fluids, Vol.35, No. 7, pp. 733-741.

Conceptual Design and Simulation of a Small Hybrid-Electric Unmanned Aerial Vehicle, Frederick G. Harmon, Andrew A. Frank, J. J. Chattot, Journal of Aircraft, Vol. 43, No. 5, pp. 1490-1498, September-October 2006.

Extension of a Helicoidal Vortex Model to Account for Blade Flexibility and Tower Interaction, J. J. Chattot, 44th AIAA Aerospace Sciences Meeting and Exhibit, 25th ASME Wind Energy Symposium, Reno, NV, Jan. 2006. AIAA 2006-391. Also Journal of Solar Energy Engineering, Vol.128, pp. 455-460, Nov. 2006.

Characterization of Three-Dimensional Effects for the Rotating and Parked NREL Phase VI Wind Turbine, Sven Schmitz and J. J. Chattot, 44th AIAA Aerospace Sciences Meeting and Exhibit, 25th ASME Wind Energy Symposium, Reno, NV, Jan. 2006. AIAA 2006-392. Also Journal of Solar Energy Engineering, Vol. 128, pp. 445-454, Nov. 2006.

Tower Shadow Modelization with Helicoidal Vortex Method, J. J. Chattot, 45th AIAA Aerospace Sciences Meeting and Exhibit, 26th ASME Wind Energy Symposium, Reno, NV, Jan. 2007. Also Computers & Fluids, Vol. 37, pp. 499-504, 2008.

Helicoidal Vortex Model for Wind Turbine Aeroelastic Simulation, J. J. Chattot, Computers and Structures, Vol. 85, pp. 1072-1079, 2007.

Flow physics and Stokes' theorem in wind turbine aerodynamics, Sven Schmitz, J. J. Chattot, Computers & Fluids, Vol. 36, pp. 1583-1587, 2007.

A Method for Aerodynamic Analysis of Wind Turbines at Peak Power, Sven Schmitz and J. J. Chattot, Journal of Propulsion and Power, Vol. 23, No. 1, pp. 243-246, 2007.

Effects of Blade Tip Modifications on Wind Turbine Performance Using Vortex Model, J. J. Chattot, 46th AIAA Aerospace Sciences Meeting and Exhibit, 27th ASME Wind Energy Symposium, Reno, NV, Jan. 2008. AIAA 2008-1315.

The Prediction and Validation of Hover Performance and Detailed Blade Loads, Sven Schmitz, J. J. Chattot, Mahendra Bhagwat, Marvin Moulton, Francis Caradonna, AHS Aeromechanics Specialist's Conference, San Francisco, CA, Jan. 2008.

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