High Lift R&D

The department is involved in the development of efficient and accurate calculation methods for the aerodynamic prediction of high lift flows. The focus is on developing viscous/inviscid methods for both 2D & 3D configurations which, for transport aircraft applications, have proven to be as accurate as Navier-Stokes methods for a fraction of the cost.

The calculation method, based on the interactive solution of the viscous and inviscid flows, is described in detail in the references below. Also, many sample results are presented and compared with experimental data. Overall, the method is extremely efficient and is accurate for single and multi-element airfoils, for both lift and drag coefficients, up to stall conditions.

The easy-to-use software developed by CSULB is used in the aircraft industry (e.g. Canadair, Bombardier) for high lift design.

Also, the method has been integrated into a design/optimization method for aircraft high lift system design. Both shapes and/or element placement can be determined for optimum performance.

A capability similar to the one discussed above for 2D flows has been developed for three-dimensional configurations.

For more information, contact besnarde@csulb.edu

Related publications

T. Cebeci, E. Besnard and H.H. Chen, "An Interactive Boundary Layer Method for Multielement Airfoils," Computers & Fluids, Vol. 27, No. 5-6, pp. 651-661, 1998 (paper in Proceedings of the Sixth International Symposium on Computational Fluid Dynamics, Lake Tahoe, NV, Sept. 1995).

T. Cebeci and E. Besnard, "An Efficient and Accurate Approach for Analysis and Design of High Lift Configurations," Canadian Aeronautics and Space Journal, Vol. 44, No. 4, Dec. 1998 (invited paper in Proceedings of the Sixth Aerodynamic Symposium, Canadian Aeronautics and Space Institute, Toronto, Canada, April 1997).

E. Besnard, O. Kural and T. Cebeci, “Flow Predictions about Three-dimensional High Lift Systems,” AIAA Paper No. 99-0543, Jan. 1999

E. Besnard, Prediction of High Lift Flows with Separation, Ph.D. dissertation, Claremont Graduate University and California State University, Long Beach, CA, May 1998.

E. Besnard, A. Schmitz, E. Boscher, N. Garcia, and T. Cebeci, "Two-dimensional Aircraft High-lift System Design and Optimization," AIAA Paper No. 98-404, 1998.

E. Besnard, G. Rebook, T. Vermeersch, A Schmitz, and T. Cebeci, "Prediction of Wing Flows with Separation," AIAA Paper No. 98-0123, 1998.

T. Cebeci, E. Besnard and H.H. Chen, "Calculation of Multi-element Airfoil Flows, Including Flap Wells", AIAA Paper 96-0056, Jan. 1996.

T. Cebeci, E. Besnard and S. Messié, "A Stability/Transition-Interactive-Boundary-Layer Approach to Multi-element Wings at High Lift," AIAA Paper 94-0292, Jan. 1994.