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Discrete sensitivity derivatives of the navier-stokes equations with a parallel krylov solver
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Taylor II, Arthur C. Ajmani, Kumud |
| Copyright Year | 1994 |
| Description | This paper solves an 'incremental' form of the sensitivity equations derived by differentiating the discretized thin-layer Navier Stokes equations with respect to certain design variables of interest. The equations are solved with a parallel, preconditioned Generalized Minimal RESidual (GMRES) solver on a distributed-memory architecture. The 'serial' sensitivity analysis code is parallelized by using the Single Program Multiple Data (SPMD) programming model, domain decomposition techniques, and message-passing tools. Sensitivity derivatives are computed for low and high Reynolds number flows over a NACA 1406 airfoil on a 32-processor Intel Hypercube, and found to be identical to those computed on a single-processor Cray Y-MP. It is estimated that the parallel sensitivity analysis code has to be run on 40-50 processors of the Intel Hypercube in order to match the single-processor processing time of a Cray Y-MP. |
| File Size | 952300 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940019828 |
| Archival Resource Key | ark:/13960/t9r25vw2n |
| Language | English |
| Publisher Date | 1994-01-01 |
| Access Restriction | Open |
| Subject Keyword | Propellants And Fuels Differential Calculus High Reynolds Number Navier-stokes Equation Hypercube Multiprocessors Computational Fluid Dynamics Parallel Computers Estimating Airfoils Supersonic Transports Design Analysis Cray Computers Memory Computers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
