United States, November 3, 2003

The objective of this Lecture Series is to present the state-of-the-art and current research directions in CFD-based drag prediction. Topics covered are: methods for drag decomposition and thrust-drag bookkeeping – engine-airframe integration – designing high lift systems – turbulence and transition modeling – drag analysis using unstructured mesh solvers – aerodynamic optimization. The course was last february delivered at the von Karman Institute in Belgium and is now repeated in the USA.

Description:

Ever since the very beginning of aerodynamic flight, the accurate prediction of aerodynamic drag has been a major challenge in the aircraft design process. During the past 20 years, Computational Fluid Dynamics (CFD) has come to play an increasingly important role in this respect, but significant advances in CFD modeling capabilities are still needed. Future improvements in the performance of transport aircraft (notably fuel efficiency and hence direct operating costs) will largely depend on reducing aerodynamic drag. This will be achieved by design optimization and techniques such as laminar flow control, areas in which CFD will play a vital role.

The objective of this Lecture Series is therefore to present the state-of-the-art and current research directions in CFD-based drag prediction. The course is aimed at applied aerodynamicists and CFD researchers as well as aircraft designers.

An introductory lecture will discuss the importance of drag prediction for aircraft design and give an overview of the major factors involved in CFD-based drag prediction, which will be covered in detail in subsequent lectures. Novel methods for drag evaluation and decomposition from CFD solutions will be presented, as well as the latest advances of the wake integration method for drag prediction from wind tunnel tests.

The state-of-the-art of drag prediction capabilities of flow solvers using both multi-block structured grid and unstructured grid technology will be discussed.

Applications will focus mainly on the subsonic and transonic flight regimes of transport aircraft, including particular topics such as the design of high-lift systems and engine/airframe integration.

This course was previously delivered at the von Karman Institute in February 2003. The current offering represents an updating and repeat of the course at the National Institute of Aerospace in Hampton Virginia, USA. The directors of this course are Prof. H. Deconinck of the von Karman Institute, and Dr. Dimitri Mavriplis, of the National Institute of Aerospace (NIA).

TIMETABLE

Monday 3 November 2003 08.45 Registration

09.00 Welcome, introductory remarks

09.15 Aircraft design and the importance of drag prediction, Prof. C. P. Van Dam, UC Davis, California, USA

11.15 Turbulence modeling for aeronautical flows, Dr. Tom Gatski, NASA Langley, Virginia, USA

14.00 Turbulence modeling for aeronautical flows (continued), Dr. Tom Gatski

15.45 Critical factors in CFD based drag prediction, Prof. C.P. Van Dam

17.00 Welcome reception

Tuesday 4 November 2003

09.00 Methods for drag decomposition, Prof. R. Tognaccini, U. of Naples Federico II, Italy

10.45 Far field / near field drag balance, Mr. D. Destarac, ONERA, France

14.00 Thrust-drag bookkeeping from CFD calculations, Prof. R. Tognaccini

15.45 Applications of drag extraction from CFD, Mr. D. Destarac

Wednesday 5 November 2003

09.00 Boundary layer transition prediction, Prof. C. P. van Dam

10.45 Advanced wake integration method for experimental drag prediction, Dr. K. Kusunose, Boeing, USA

14.00 Application of CFD for drag analysis and validation with wind-tunnel data. Influence of engine-airframe integration, Dr. M. Laban, NLR, The Netherlands

15.45 Advanced wake integration method for experimental drag prediction (continued), Dr. K. Kusunose

Thursday 6 November 2003

09.00 Drag analysis using unstructured mesh solvers (Part 1), Dr. D. Mavriplis, National Institute of Aerospace (NIA), USA

11.00 Aerodynamic optimisation using the adjoint method, Prof. A. Jameson, Stanford University, USA

14.00 Aerodynamic optimization using the adjoint method (continued), Prof. A. Jameson

15.45 Drag prediction validation of a multi-dimensional upwind solver, Ir. K. Sermeus, von Karman Institute for Fluid Dynamics, Belgium

Friday 7 November 2003

09.00 Designing high-lift systems for low drag, Dr. U. Herrmann, DLR Braunschweig, Germany

11.00 Drag analysis using unstructured mesh solvers (Part 2), Dr. D. Mavriplis

14.00 Experiences from the AIAA drag prediction workshop series, Speaker to be determined

15.15 End

Lunch will be taken from 12h30 to 14h00. Coffee breaks are scheduled each morning and afternoon. The afternoon sessions will normally finish at about 5PM.

REGISTRATION FEE

The course fee of $850 includes administrative costs, printed notes and coffee (lunches are not included). Under a special arrangement, the registration fee will be waived for NASA Langley participants.

FELLOWSHIPS

VKI and NIA will make fellowships available, in the form of reduced tuition fees, for students who have earned a baccalaureate degree (B.S., B.A.) and are currently pursuing a graduate degree (M.S., Ph.D.). For these students, tuition is reduced by 50% to $425.

HOW TO REGISTER

Register online at http://research.nianet.org/event or by contacting NIA by phone, FAX or email. Early registration deadline is October 1, 2003. A letter of acceptance and additional information will be sent upon registration.

PROCEEDINGS

Printed notes will be distributed during registration.