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Development of an explicit multigrid algorithm for quasi-three-dimensional viscous flows in turbo-machinery
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chima, R. V. |
| Copyright Year | 1985 |
| Description | A rapid quasi three-dimensional analysis was developed for blade-to-blade flows in turbomachinery. The analysis solves the unsteady Euler or thin layer Navier-Stokes equations in a body-fitted coordinate system. It accounts for the effects of rotation, radius change, and stream-surface thickness. The Baldwin-Lomax eddy-viscosity model is used for turbulent flows. The equations which are solved by a two-stage Runge-Kutta scheme made efficient by use of vectorization, a variable time-step, and a flux-based multigrid scheme, are described. A stability analysis is presented for the two-stage scheme. Results for a flat-plate model problem show the applicability of the method to axial, radial, and rotating geometries. Results for a centrifugal impeller and a radial diffuser show that the quasi three-dimensional viscous analysis can be a practical design tool. |
| File Size | 880857 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860001679 |
| Archival Resource Key | ark:/13960/t2d846k4c |
| Language | English |
| Publisher Date | 1985-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aeronautics (general) Navier-stokes Equation Algorithms Euler Equations of Motion Fluid Flow Coordinates Inviscid Flow Vectors Mathematics Flow Characteristics Turbomachinery Viscous Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
