Last year, researchers at the NASA Lewis Research Center used the average passage code APNASA to complete the largest three-dimensional simulation of a multistage axial flow compressor to date. Consisting of 29 blade rows, the configuration is typical of those found in aeroengines today. The simulation, which was executed on the High Performance Computing and Communications (HPCC) Program IBM SP2 parallel computer located at the NASA Ames Research Center, took nearly 90 hr to complete. Since the completion of this activity, a fine-grain, parallel version of APNASA has been written by a team of researchers from General Electric, NASA Lewis, and NYMA. Timing studies performed on the SP2 have shown that, with eight processors assigned to each blade row, the simulation time is reduced by a factor of six. For this configuration, the simulation time would be 15 hr. The reduction in computing time indicates that an overnight turnaround of a multistage configuration simulation is feasible. In addition, average passage forms of two-equation turbulence models were formulated. These models are currently being incorporated into APNASA.
Turbomachinery Flows Modeled
1997-03-01
Miscellaneous
No indication
English
Transition in Turbomachinery Flows
British Library Conference Proceedings | 1993
|Entropy Generation in Turbomachinery Flows
SAE Technical Papers | 1990
|Analysis of Leakage Flows in Turbomachinery
NTRS | 1986
|PCPANEL-PNLGRF: Software for Computing Turbomachinery Flows
Online Contents | 1997
Numerical Simulations of Flows in Centrifugal Turbomachinery
Online Contents | 1995
|