HADY-I, a FORTRAN program for the compressible stability analysis of three-dimensional boundary layers
Abstract
A computer program HADY-I for calculating the linear incompressible or compressible stability characteristics of the laminar boundary layer on swept and tapered wings is described. The eigenvalue problem and its adjoint arising from the linearized disturbance equations with the appropriate boundary conditions are solved numerically using a combination of Newton-Raphson interative scheme and a variable step size integrator based on the Runge-Kutta-Fehlburh fifth-order formulas. The integrator is used in conjunction with a modified Gram-Schmidt orthonormalization procedure. The computer program HADY-I calculates the growth rates of crossflow or streamwise Tollmien-Schlichting instabilities. It also calculates the group velocities of these disturbances. It is restricted to parallel stability calculations, where the boundary layer (meanflow) is assumed to be parallel. The meanflow solution is an input to the program.
- Publication:
-
Final Report Old Dominion Univ
- Pub Date:
- September 1981
- Bibcode:
- 1981odun.reptR....E
- Keywords:
-
- Boundary Layer Stability;
- Compressible Boundary Layer;
- Computer Programs;
- Fortran;
- Laminar Boundary Layer;
- Swept Wings;
- Three Dimensional Boundary Layer;
- Boundary Conditions;
- Computer Programming;
- Cross Flow;
- Eigenvalues;
- Newton-Raphson Method;
- Runge-Kutta Method;
- Fluid Mechanics and Heat Transfer