# Publications

## Refereed Contributions

### Published or accepted

__Thokala, P.__, and**Martins, J.R.R.A.**, "Variable complexity methods applied to airfoil design". Engineering Optimization, Vol. 39, No. 3, pp. 271-286, 2006.**Zingg, D.W.**, and__Elias, S.__, "On Aerodynamic Optimization Under a Range of Operating Conditions," AIAA J., Vol. 44, No. 11, pp. 2787-2792, November 2006 (also AIAA Paper 2006-1053, 44th AIAA Aerospace Sciences Meeting, Reno, Jan. 2006).__Driver, J.__, and**Zingg, D.W.**, "Numerical Aerodynamic Optimization Incorporating Laminar-Turbulent Transition Prediction," AIAA J., Vol. 45, No. 8, pp. 1810-1816, 2007.- Marta, A.C.,
__Mader, C.A.__,**Martins, J.R.R.A.**, van der Weide, E., and Alonso, J.J. "A methodology for the development of discrete adjoint solvers using automatic differentiation tools". International J. of Computational Fluid Dynamics, Vol. 21, No. 9, 2007. __Rumpfkeil, M.P.__, and**Zingg, D.W.**, "The Optimal Control of Unsteady Flows with a Discrete Adjoint Method," Optimization and Engineering, DOI 10.1007/s11081-008-9035-5, 2008.__Mader, C.A.__,**Martins, J.R.R.A.**, Alonso, J.J., and van der Weide, E. "ADjoint: An approach for the rapid development of discrete adjoint solvers". AIAA J., Vol. 46, No. 4, 2008.__Hicken, J.E.__, and**Zingg, D.W.**, "A Parallel Newton-Krylov Solver for the Euler Equations Discretized Using Simultaneous Approximation Terms," AIAA J., Vol. 46, No. 11, 2008.__Truong, A.H.__, and**Zingg, D.W.**, "Mesh Movement for a Discrete-Adjoint Newton-Krylov Algorithm for Aerodynamic Optimization," AIAA J., Vol. 46, No. 7, 2008.**Zingg, D.W.**, Nemec, M., and Pulliam, T.H., "A Comparative Evaluation of Genetic and Gradient-Based Algorithms Applied to Aerodynamic Optimization," REMN - 17/2008, pp. 103-126 (invited).__Hicken, J.E.__, and**Zingg, D.W.**, "Aerodynamic Optimization Algorithm with Integrated Geometry Parameterization and Mesh Movement," AIAA J., Vol. 48, No. 2, pp. 401-413, 2010.__Hicken, J.E.__, and**Zingg, D.W.**, "A Simplified and Flexible Variant of GCROT for Solving Nonsymmetric Linear Systems," SIAM J. on Scientific Computing, Vol. 32, No. 3, 2010.__Rumpfkeil, M.P.__, and**Zingg, D.W.**, "A Hybrid Algorithm for Far-Field Noise Minimization," Computers & Fluids, doi:10.1016/j.compfluid.2010.05.006, Vol. 39, Issue 9, pp. 1516-1528, 2010.__Buckley, H.P.__,**Zingg, D.W.**, and Zhou, B.Y., "Airfoil Optimization Using Practical Aerodynamic Design Requirements," AIAA J. of Aircraft, Vol. 47, No. 5, pp. 1707-1719, 2010.__Hicken, J.E.__, and**Zingg, D.W.**, "Induced-Drag Minimization of Nonplanar Geometries Based on the Euler Equations," AIAA J., Vol. 48, No. 11, pp. 2564- 2575, 2010.__Hicken, J.E.__, and**Zingg, D.W.**, "Superconvergent Functional Estimates from Summation-by-Parts Finite-Difference Discretizations," SIAM J. on Scientific Computing, Vol. 33, pp. 893-922, 2011.__Kennedy, G.J.__, Hansen, J.S. and**Martins, J.R.R.A.**. "A Timoshenko beam theory with pressure corrections for layered orthotropic beams," International J. of Solids and Structures, doi: 10.1016/j.ijsolstr.2011.04.009, Vol. 48, Nos. 16-17, pp. 2373–2382, 2011.__Mader, C.A.__, and**Martins, J.R.R.A.**"Computation of aircraft stability derivatives using an automatic differentiation adjoint approach," AIAA J., doi: 10.2514/1.55678, Vol. 49, No. 12, pp. 2737–2750, 2011.__Kennedy, G.J.__, and**Martins, J.R.R.A.**"A homogenization-based theory for anisotropic beams with accurate though-section stress and strain prediction," International J. of Solids and Structures, doi: 10.1016/j.ijsolstr.2011.09.012, Vol. 49, No. 1, pp. 54–72, 2012.__Leung, T.M.__, and**Zingg, D.W.**, "Aerodynamic Shape Optimization of Wings Using a Parallel Newton-Krylov Approach," AIAA J., Vol. 50, No. 3, pp. 540-550, March 2012.

### Submitted

__Mader, C.A.__, and**Martins, J.R.R.A.**"A discrete adjoint formulation for aircraft stability derivatives using an automatic differentiation approach," AIAA J., 2011. (Accepted subject to revisions).__Mader, C.A.__, and**Martins, J.R.R.A.**"An automatic differentiation discrete adjoint approach for time-spectral computational fluid dynamics," AIAA J., 2012. (Accepted subject to revisions.)__Han, X.__, and**Zingg, D.W.**, "An Evolutionary Parameterization for Aerodynamic Shape Optimization," J. of Optimization and Engineering, December 2012. (Accepted subject to revisions.)__Chernukhin, O.__, and**Zingg, D.W.**, "Multimodality and Global Optimization Algorithms for Aerodynamic Shape Optimization," AIAA J., Nov. 2012. (Accepted subject to revisions.)

## Non-Refereed Contributions

Papers in non-refereed conference proceedings (many of these can be downloaded here)

__Osusky, M.__, and**Zingg, D.W.**, "Results from the 5th AIAA Drag Prediction Workshop Obtained with a Parallel Newton-Krylov-Schur Flow Solver Discretized Using Summation-by-Parts Operators," 21st AIAA Computational Fluid Dynamics Conference, San Diego, June 2013, submitted.__Osusky, L.__, and**Zingg, D.W.**, "Application of an Efficient Newton-Krylov Aerodynamic Shape Optimization Tool to Reynolds-Averaged Navier-Stokes Design Problems," 21st AIAA Computational Fluid Dynamics Conference, San Diego, June 2013, submitted.__Osusky, M.__,__Boom, P.D.__,__Del Rey Fernandez, D.C.__, and**Zingg, D.W.**, "An Efficient Newton-Krylov-Schur parallel solution algorithm for the steady and unsteady Navier- Stokes equations," ICCFD7, Hawaii, July 9-13, 2012.__Apponsah, K.P.__, and**Zingg, D.W.**, "A Load Balancing Tool for Structured Multi-Block Grid CFD Applications," 2012 CFD Society of Canada Conference, Alberta, May 2012.__Osusky, L.__, and**Zingg, D.W.**, "Aerodynamic Shape Optimization in Three-Dimensional Turbulent Flows Using a Newton-Krylov Approach," 2012 CFD Society of Canada Conference, Alberta, May 2012.__Osusky, M.__, and**Zingg, D.W.**, "A Parallel Newton-Krylov Solver for the Three- Dimensional Reynolds-Averaged Navier-Stokes Equations," 2012 CFD Society of Canada Conference, Alberta, May 2012.__Rashad, R.__, and**Zingg, D.W.**, "Laminar-Turbulent Transition Prediction in a Reynolds- Averaged Navier-Stokes Solver," 2012 CFD Society of Canada Conference, Alberta, May 2012.__Osusky, L.__, and**Zingg, D.W.**, "A Novel Aerodynamic Shape Optimization Approach for Three-Dimensional Turbuent Flows," AIAA Paper 2012-0058, 2012.__Osusky, M.__, and**Zingg, D.W.**, "A Parallel Newton-Krylov-Schur Flow Solver for the Reynolds-Averaged Navier-Stokes Equations," AIAA Paper 2012-0442, 2012.__Chernukhin, O.__, and**Zingg, D.W.**, “An Investigation of Multi-Modality in Aerodynamic Shape Optimization,” AIAA Paper 2011-3070, 20th AIAA Computational Fluid Dynamics Conference, Hawaii, June 2011.__Han, X.__, and**Zingg, D.W.**, “Toward Evolutionary Geometry Parameterization in Aerodynamic Shape Optimization,” AIAA Paper 2011-3536, 20th AIAA Computational Fluid Dynamics Conference, Hawaii, June 2011.__Hicken, J.E.__,__Buckley, H.P.__,__Osusky, M.__, and**Zingg, D.W.**, “Dissipation-based continuation: a globalization for inexact-Newton solvers,” AIAA Paper 2011-3237, 20th AIAA Computational Fluid Dynamics Conference, Hawaii, June 2011.__Leung, T.M.__, and**Zingg, D.W.**, “Design of Low-Sweep Wings for Maximum Range,” AIAA Paper 2011-3178, 29th AIAA Applied Aerodynamics Conference, Hawaii, June 2011.__Buckley, H.P.__, and**Zingg, D.W.**, "On Aerodynamic Design Through Multipoint Numerical Optimization," CASI 2011 Aerodynamics Symposium, Montreal, April 2011.__Chernukhin, O.__, and**Zingg, D.W.**, "Hybrid Algorithms for Aerodynamic Shape Optimization," CASI 2011 Aerodynamics Symposium, Montreal, April 2011.__Han, X.__, and**Zingg, D.W.**, "Toward Evolutionary Geometry Parameterization in Aerodynamic Shape Optimization," CASI 2011 Aerodynamics Symposium, Montreal, April 2011.__Kennedy G. J.__,and**Martins, J.R.R.A.**, "Aerostructural design optimization of composite aircraft with stress and local buckling constraints using an implicit structural parametrization", CASI 2011 Aerodynamics Symposium, Montreal, April 2011.__Leung, T.M.__, and**Zingg, D.W.**, "Design of Low-Sweep Wings for Maximum Range Using Aerodynamic Shape Optimization," CASI 2011 Aerodynamics Symposium, Montreal, April 2011.__Mader, C.A.__and**Martins, J.R.R.A.**, "Stability-constrained aerodynamic shape optimization of flying wings," CASI 2011 Aerodynamics Symposium, Montreal, April 2011.__Buckley, H.P.__, and**Zingg, D.W.**, "Practical Aspects of Aerodynamic Design Through Multipoint Numerical Optimization," AIAA Paper 2011-1244, 49th AIAA Aerospace Sciences Meeting, Orlando, Jan. 2011.__Kuntawala, N.B.__, Hicken, J.E., and**Zingg, D.W.**, "Aerodynamic Shape Optimization of a Blended-Wing-Body Aircraft Configuration," AIAA Paper 2011-642, 49th AIAA Aerospace Sciences Meeting, Orlando, Jan. 2011.__Kennedy, G.J.__, and**Martins, J.R.R.A.**, "Parallel solution methods for aerostructural analysis and design optimization." AIAA Paper 2010-9308, 13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference, Fort Worth, TX, Sept. 2010.__Kenway, G.K.__,__Kennedy, G.J.__, and**Martins, J.R.R.A.**, "A CAD-free approach to high- fidelity aerostructural optimization." AIAA Paper 2010-9231, 13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference, Fort Worth, TX, Sept. 2010.__Hicken, J.E.__,__Osusky, M.__, and**Zingg, D.W.**, "Comparison of parallel preconditioners for a Newton-Krylov flow solver," ICCFD6, St. Petersburg, July 12-16, 2010.__Buckley, H.P.__, and**Zingg, D.W.**, "Practical Aspects of Multipoint Aerodynamic Shape Optimization," 18th Annual Conference of the CFD Society of Canada, London, May 2010.__Hicken, J.E.__, and**Zingg, D.W.**, "Superconvergent Functional Estimates and Summation- By-Parts Operators," 18th Annual Conference of the CFD Society of Canada, London, May 2010.__Kuntawala, N.B.__, and**Zingg, D.W.**, "Preliminary Aerodynamic Shape Optimization of a Blended-Wing-Body Aircraft Configuration," 18th Annual Conference of the CFD Society of Canada, London, May 2010 (second place for best student paper award).__Leung, T.M.__, and**Zingg, D.W.**, "Wing Design for Range Maximization Using Aerodynamic Shape Optimization," 18th Annual Conference of the CFD Society of Canada, London, May 2010.__Olague, L.M.__, and**Zingg, D.W.**, "Aerodynamic Shape Optimization Using a Three- Dimensional Newton-Krylov Discrete-Adjoint Algorithm," 18th Annual Conference of the CFD Society of Canada, London, May 2010 (winner of best student paper award).__Osusky, M.__, and**Zingg, D.W.**, "A Parallel Multi-Block Newton-Krylov Flow Solver for the Navier-Stokes Equations with SBP-SAT Discretization," 18th Annual Conference of the CFD Society of Canada, London, May 2010.__Osusky, M.__, and**Zingg, D.W.**, "A Parallel Newton-Krylov Flow Solver for the Navier-Stokes Equations Using the SBP-SAT Approach", 48th AIAA Aerospace Sciences Meeting, Orlando, Jan. 2010.__Buckley, H.P.__, and**Zingg, D.W.**, "An Automated Multipoint Optimization Procedure for Practical Aerodynamic Design Problems", 13th CASI Aerodynamics Symposium, Ottawa, May 2009.__Buckley, H.P.__,__Zhou, B.Y.__, and**Zingg, D.W.**, "Airfoil Optimization Using Practical Aerodynamic Design Requirements", AIAA Paper 2009-3516, 27th AIAA Applied Aerodynamics Conference, San Antonio, June 2009.__Dias, S.C.__, and**Zingg, D.W.**, "A High-Order Parallel Newton-Krylov Flow Solver for the Euler Equations", AIAA Paper 2009-3657, 19th AIAA Computational Fluid Dynamics Conference, San Antonio, June 2009.__Hicken, J.E.__, and**Zingg, D.W.**, "Globalization Strategies for Inexact-Newton Solvers", AIAA Paper 2009-4139, 19th AIAA Computational Fluid Dynamics Conference, San Antonio, June 2009.__Huan, X.__,__Hicken, J.E.__, and**Zingg, D.W.**, "Interface and Boundary Schemes for High-Order Methods", AIAA Paper 2009-3658, 19th AIAA Computational Fluid Dynamics Conference, San Antonio, June 2009.__Leung, T.M.__, and**Zingg, D.W.**, "Single- and Multi-point Aerodynamic Shape Optimization Using a Parallel Newton-Krylov Approach", AIAA Paper 2009-3803, 19th AIAA Computational Fluid Dynamics Conference, San Antonio, June 2009.__Hicken, J.E.__, and**Zingg, D.W.**, "What Can Numerical Optimization Teach Us About Induced Drag?", 13th CASI Aerodynamics Symposium, Ottawa, May 2009.__Leung, T.M.__, and**Zingg, D.W.**, "Aerodynamic Shape Optimization of Wings at Transonic Speeds", 13th CASI Aerodynamics Symposium, Ottawa, May 2009.__Dias, S.C.__, and**Zingg, D.W.**, "A High-Order Parallel Newton-Krylov Flow Solver for the Euler Equations", 17th Annual Conference of the CFD Society of Canada, Ottawa, May 2009.__Hicken, J.E.__, and**Zingg, D.W.**, "Algorithms for Efficient Aerodynamic Optimization", 17th Annual Conference of the CFD Society of Canada, Ottawa, May 2009.__Leung, T.M.__, and**Zingg, D.W.**, "High-Fidelity Aerodynamic Shape Optimization Using a Parallel Newton-Krylov Approach", 17th Annual Conference of the CFD Society of Canada, Ottawa, May 2009.**Zingg, D.W.**, and__Hicken J.E.__, "Challenges and Opportunities in Aerodynamic Shape Optimization", Fifth International Conference on Flow Dynamics, GCOE Program, Institute of Fluid Science, Tohoku University, Sendai, Japan, November 2008 (invited).__Hicken, J.E.__, and**Zingg, D.W.**, "An Investigation of Induced Drag Minimization Using a Parallel Newton-Krylov Algorithm", AIAA Paper 2008-5807, 12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Victoria, Sept. 2008.__Hicken, J.E.__, and**Zingg, D.W.**, "Integrated Geometry Parameterization and Grid Movement Using B-Splie Meshes", AIAA Paper 2008-6079, 12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Victoria, Sept. 2008.__Leung, T.__, and**Zingg, D.W.**, "A Newton-Krylov Approach to Aerodynamic Shape Optimization", AIAA Paper 2008-5806, 12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Victoria, Sept. 2008.__Mader, C.__,__Kenway, G.__, and**Martins, J.R.R.A.**, "Towards High-Fidelity Aerostructural Optimization Using a Coupled ADjoint Approach", AIAA Paper 2008-5968, 12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, Victoria, Sept. 2008.__Rumpfkeil, M.P.__, and**Zingg, D.W.**, "Far-Field Noise Minimization Using an Adjoint Approach," ICCFD5, Seoul, July 7-11, 2008.__Rumpfkeil, M.P.__, and**Zingg, D.W.**, "Unsteady Optimization Using a Discrete Adjoint Approach Applied to Aeroacoustic Shape Design," AIAA Paper 2008-18, 46th AIAA Aerospace Sciences Mtg., Reno, 2008.__Hicken J.E.__, and**Zingg, D.W.**, "A Parallel Newton-Krylov Flow Solver for Multi-Block Grids", AIAA Paper 2007-4333, 18th AIAA Computational Fluid Dynamics Conference, Miami, June 2007.__Mader, C.A.__,**Martins, J.R.R.A.**, and Marta, A.C. "Towards aircraft design using an automatic discrete adjoint solver". 18th AIAA Computational Fluid Dynamics Conference, Miami, FL, June 2007.__Truong, A.H.__,__Oldfield, C.__, and**Zingg, D.W.**, "Mesh Movement for a Discrete-Adjoint Newton-Krylov Algorithm for Aerodynamic Optimization", AIAA Paper 2007-3952, 18th AIAA Computational Fluid Dynamics Conference, Miami, June 2007.**Zingg, D.W.**, and Billing, L., "Toward Practical Aerodynamic Design Through Numerical Optimization", AIAA Paper 2007-3950, 18th AIAA Computational Fluid Dynamics Conference, Miami, June 2007.__Hicken, J.E.__, and**Zingg, D.W.**, "Facilitating Multiblock Discretizations Via Simultaneous Approximation Terms," 15th Annual Conference of the CFD Society of Canada, Toronto, May 2007.__Rumpfkeil, M.P.__, and**Zingg, D.W.**, "Optimal Aeroacoustic Shape Design Using a Discrete Adjoint Approach," 15th Annual Conference of the CFD Society of Canada, Toronto, May 2007.__Truong, A.H.__,__Hicken, J.E.__, and**Zingg, D.W.**, "A Pseudo-Nonlinear Mesh Movement Algorithm Applied to Mesh Generation: A Hands-Off Approach," 15th Annual Conference of the CFD Society of Canada, Toronto, May 2007.__Hicken J.E.__, and**Zingg, D.W.**, "A Parallel Newton-Krylov Algorithm for Aerodynamic Flows and Adjoint Variables," 12th Annual CASI Aerodynamics Symposium, Toronto, April 2007.__Rumpfkeil, M.P.__, and**Zingg, D.W.**, "The Remote Inverse Shape Design of Airfoils in Unsteady Flows," 12th Annual CASI Aerodynamics Symposium, Toronto, April 2007.__Truong, A.H.__,__Oldfield, C.__, and**Zingg, D.W.**, "A Linear Elasticity Mesh Movement Method with an Augmented Adjoint Approach for Aerodynamic Shape Optimization," 12th Annual CASI Aerodynamics Symposium, Toronto, April 2007.__Rumpfkeil, M.P.__, and**Zingg, D.W.**, "A General Framework for the Optimal Control of Unsteady Flows with Applications", AIAA Paper 2007-1128, 45th AIAA Aerospace Sciences Meeting, Reno, Jan. 2007.

### Theses

__Elias, S.__, "Multi-Point Aerodynamic Shape Design", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2005__Oldfield, C.__, "An Adjoint Method Augmented with Grid Sensitivities for Aerodynamic Optimization", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2006__Billing, L.__, "On the Development of an Improved Lift-Constrained Aerodynamic Optimization Algorithm", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2006__Kam, D.C.W.__, "A Three-Dimensional Newton-Krylov Navier-Stokes Flow Solver Using a One-Equation Turbulence Model", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2007__Mader, C.A.__, "ADjoint: An approach for the rapid development of discrete adjoint solvers". M.A.Sc., University of Toronto Institute for Aerospace Studies, Toronto, ON, 2007__Thokala, P.__, "Variable complexity optimization", M.A.Sc, University of Toronto Institute for Aerospace Studies, 2005__Rumpfkeil, M.P.__, "Airfoil Optimization for Unsteady Flows with Application to High-Lift Noise Reduction", Ph.D., University of Toronto Institute for Aerospace Studies, 2008__Hicken, J.E.__, "Efficient Algorithms for Future Aircraft Design: Contributions to Aerodynamic Shape Optimization", Ph.D., University of Toronto Institute for Aerospace Studies, 2009__Dias, S.C.__, "A High-Order Parallel Newton-Krylov Flow Solver for the Euler Equations", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2009__Buckley, J.H.P.__, "Numerical Shape Optimization of Airfoils with Practical Aerodynamic Design Requirements", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2009__Leung, T.M.__, "A Newton-Krylov Approach to Aerodynamic Shape Optimization in Three Dimensions", Ph.D., University of Toronto Institute for Aerospace Studies 2010__Chernukhin, O.__"Global Optimization Algorithms for Aerodynamic Design", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2011__Han, X.__"An Evolutionary Geometry Parameterization for Aerodynamic Shape Optimization", M.A.Sc., University of Toronto Institute for Aerospace Studies, 2011