It begins with a discussion of the physics of unsteady flows and an explanation of lift and thrust generation, airfoil flutter, gust response and dynamic stall. This is followed by an exposition of the four major calculation methods in currents use, namely inviscid-panel, boundary-layer, viscous-inviscid interaction and Navier-Stokes methods. A new viscous-inviscid semi-inverse (VISI) interaction method has been developed for predicting the flow field arising from a combination of inviscid potential flow and viscous flow. The technique involves matching the bounding velocities for each region by iteratively solving for the displacement thickness, δ*(x). The formula used to update δ*(x) after each iteration is generated by. It begins with a discussion of the physics of unsteady flows and an explanation of lift and thrust generation, airfoil flutter, gust response and dynamic stall. This is followed by an exposition of the four major calculation methods in currents use, namely inviscid-panel, boundary-layer, viscous-inviscid interaction and Navier-Stokes s: 2. [4] R.C. Lock, B.R. Williams, Viscous-inviscid interaction in external aerodynamics, Prog. Aerospace Sci. 24 () 51– [5] T. Cebeci, An Engineering Approach to the Calculation of Aerodynamic Flows, Springer-Verlag, Berlin, A.E.P. Veldman Institute for Mathematics and Computing Science University of Groningen PO Box AV.

H.-T. Kim, “Computation of Viscous Flow Around a Propeller-Shaft Configuration with Infinite-Pitch Rectangular Blades,” Department of Mechanical Engineering, University of Iowa. S.Y. Yoo (co-chairman w/V.C. Patel), “Viscous Inviscid Interaction with Higher-Order Viscous-Flow Equations,” December Publications: 1. THREE-DIMENSIONAL STRUCTURE AND EQUIVALENCE RULE OF TRANSONIC FLOWS, H. K. Cheng and M. M. Hafez, AIAA Journal, 2. EQUIVALENCE RULE AND TRANSONIC FLOWS INVOLVING LIFT, H. K. Cheng and M. M. Hafez, AIAA Paper , 11th AIAA Science Meeting, January , Washington, DC. 3. EQUIVALENCE . The Second Symposium on Numerical and Physical Aspects of Aerodynamic Flows was held at California State University, Long Beach, from 17 to 20 January Forty-eight papers were presented, including Keynote Lec tures by A. M. 0. Smith and J. N. Nielsen, in ten technical sessions which were. distinct regimes of viscous-inviscid interaction approximately 4 x based on chord, and the are identified, corresponding to varying degrees of reduced frequency parameter, k = wc/2U, varied from unsteady flow separation. The dominant fluid 0 to dynamic phenomena are described for .

Measurements of Attached and Separated Turbulent Flows in the Trailing-Edge Regions of Airfoils.- 3. Interactive Methods: Transonic Flows.- Numerical Viscous-Inviscid Interaction in Steady and Unsteady Flows.- Computation of Transonic Viscous-Inviscid Interacting Flow.- This paper discusses a viscous/inviscid interaction analysis of flow over a NACA airfoil at a chord Reynolds number of , using a calculation method of Cebeci et al. The computed characteristics of a mid-chord laminar separation bubble are compared with experimental laser-doppler anemometer measurements of Hoheisel et al. Attention. The book presents the latest asymptotical models, simplified Navier-Stokes equations and viscous-inviscid interaction theroies and will be of critical interest to researchers, engineers, academics and advanced graduate students in the areas of fluid mechanics, compressible flows, aerodynamics and aircraft design, applied mathematics and. Computation of Free-Surface Flows Around 3-D Hydrofoil and Wigley Ship by N-S Solver, by and : Numerical Prediction of Ship Generated Internal Waves in a Stratified Ocean at Supercritical Froude Numbers, by , , and : SESSION 6: WAVY/FREE-SURFACE FLOW: VISCOUS-INVISCID INTERACTION Chair: