Sample Computer Programs

Abstract

This appendix lists several computer programs that are based on the methods presented in the previous chapters. These FORTRAN programs were prepared mainly by students during regular class work and their algorithms were not optimized for clear programming and computational efficiency. Also, an effort was made to list only the simplest versions without interactive and graphic input/output sections owing to the rapid changes and improvements in computer operation systems. In spite of this brevity these computer programs can help the readers to construct their baseline algorithms upon which their customized computer programs may be developed. Two-Dimensional Panel Methods Grid generator for van de Vooren airfoil shapes, based on the formulas of Section 6.7. The program also calculates the exact chordwise velocity components and pressure coefficient for the purpose of comparison. All the two-dimensional codes (Programs 3–11) use the input generated by this subroutine. Two-Dimensional Panel Methods Based on the Neumann Boundary Condition 2. Discrete vortex, thin wing method, based on Section 11.1.1. 3. Constant strength source method (based on Section 11.2.1). Note that the matrix solver (SUBROUTINE MATRX) is attached to this program only and is not listed with Programs 4–11, for brevity. 4. Constant strength doublet method, based on Section 11.2.2. 5. Constant strength vortex method, based on Section 11.2.3. 6. Linear strength source method, based on Section 11.4.1. 7. Linear strength vortex method, based on Section 11.4.2.