Doctoral Examination Committee Chair: Professor Clinton Groth

Doctoral Examination Committee Member: Professor Hugh Liu

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Colleagues: UTIAS CFD Lab

Ph.D. Candidate: Mohammad Tabesh

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Co-authored by Professor D.W. Zingg

16th AIAA Computational Fluid Dynamics Conference from June 23-26, 2003

Orlando, USA

Conference Paper:Download PDF file

Conference Presentation:Download PDF file

A Fully-Coupled Algorithm For Aerodynamic Design Optimization

Co-authored by Professor D.W. Zingg

48th Annual CASI Conference on May 1, 2001

Toronto, Canada

Conference Paper:Download PDF file

Conference Presentation:Download PDF file

This is a Mach number contour of a supercritical flow about a RAE2822 airfoil. This is a fully-turbulent flowfield, at a Mach number of 0.75 and an angle of attack of 3 degrees. Notice the stagnation region at the leading edge, the supersonic region, the lambda shock, and the shock-boundary-layer interaction including shock-induced flow separation. Finally, note the recirculation region on the upper surface of the airfoil at the trailing edge.

This simulation was conducted using a Newton-GMRES algorithm, which solved the discretized, compressible, steady Navier-Stokes equations with the Spalart-Allmaras turbulence model. On my desktop computer, this simulation took roughly 2 minutes.

This is a 3D contour plot of CPU time versus angle of attack and freestream Mach number for flow about a symmetric NACA0012 airfoil. The Euler equations are used to model the flow. A fully Newton-GMRES algorithm is used to solve the discretized equations. Local preconditioning can be used to improve the algorithm's performance for low-Mach number flows and for flows with a Mach number in the neighbourhood of unity. Simulations for large angles of attack are not feasible since viscous effects are not described by the Euler equations.

Division of Engineering Science, Faculty of Applied Science and Engineering, Univeristy of Toronto

Fall 2004: Course instructor: John Gatsis

Fall 2005: Course instructor: Professor David Zingg

Fall 2006: Course instructor: John Gatsis

Fall 2007: Course instructor: John Gatsis

Current course instructor: Philippe Lavoie

The course website is on the UofT PORTAL. To access this site you must first login to your UTORID account. This course should appear under your courses.

Preconditioning Techniques for a Newton-Krylov Algorithm for the Compressible Navier-Stokes Equations

Professor Christara, University of Toronto, Department of Computer Science

Course Home Page

Numerical Solutions for Optimization Problems

Professor Wolkowicz, University of Waterloo, Department of Combinatorics and Optimization

Course Home Page

Air-Breathing Propulsion

Professor Sislian, University of Toronto, Institute for Aerospace Studies

The Finite Element Method

Professor Hansen, University of Toronto, Institute for Aerospace Studies

A Fully-Coupled Algorithm for Aerodynamic Design Optimization

Professor Gottlieb, University of Toronto, Institute for Aerospace Studies

Graduate Course: Fundamentals of Computational Fluid Dynamics

Professor Zingg, University of Toronto, Institute for Aerospace Studies

Graduate Course: Topics in Computational Fluid Dynamics

Professor Zingg, University of Toronto, Institute for Aerospace Studies

Graduate Course: Viscous Flows and Boundary Layers

Professor Walsh, University of Toronto, Institute for Aerospace Studies

ARC1D Flow Solver Results:Download PDF file

1D Halving Linesearch Results:Download PDF file

1D Backtracking Linesearch Results:Download PDF file

A typical flow solution in 2D:Download PDF file

Download PS file

Visit the Canadian National Archives to get a copy at http://amicus.nlc-bnc.ca

Feedback Control Systems for Automotive Aerodynamic Devices

I'd like to especially thank Dr. Phil Sullivan for his exceptional guidance. He has an important place in history for many reasons, including for his significant contribution to the safe return of the Apollo 13 astronauts.

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ARC1D Flow Solver Results:Download PDF file

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Applied Upwinding Dissipation Schemes Presentation:Download PDF file

Investigating the Spalart-Allmaras Turbulence Model Presentation:Download PDF file

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