Automated Generation of Airfoil Performance Tables using a Two-Dimensional Navier-Stokes Solver

摘要

A computational fluid dynamics (CFD) based methodology to automatically produce two-dimensional airfoil performance tables has been developed. The method employs a new software code, which controls the two-dimensional Reynoldsaveraged Navier-Stokes flow solver ARC2D. The generated data can be stored in so-called C81 airfoil performance tables for use within comprehensive rotorcraft analysis codes. C81 tables list the airfoil lift, drag and pitching moment coefficients as functions of angle of attack (-180° ≤ α ≤ 180°) for a range of Mach numbers normally between 0.0 and 1.0. This paper reports on the development of a general automation method applied to the ARC2D flow solver. The method is shown to perform well for its proposed purpose through the largely “hands-off” generation of C81 tables. Computations for the SC1095 airfoil section are presented and compared with experimental and existing C81 data. Time requirements for C81 table generationare also discussed.