Massively parallel computational fluid dynamics calculations for aerodynamics and aerothermodynamics applications
Massively parallel computers have enabled the analyst to solve complicated flow fields (turbulent, chemically reacting) that were previously intractable. Calculations are presented using a massively parallel CFD code called SACCARA (Sandia Advanced Code for Compressible Aerothermodynamics Research and Analysis) currently under development at Sandia National Laboratories as part of the Department of Energy (DOE) Accelerated Strategic Computing Initiative (ASCI). Computations were made on a generic reentry vehicle in a hypersonic flowfield utilizing three different distributed parallel computers to assess the parallel efficiency of the code with increasing numbers of processors. The parallel efficiencies for the SACCARA code will be presented for cases using 1, 150, 100 and 500 processors. Computations were also made on a subsonic/transonic vehicle using both 236 and 521 processors on a grid containing approximately 14.7 million grid points. Ongoing and future plans to implement a parallel overset grid capability and couple SACCARA with other mechanics codes in a massively parallel environment are discussed.
- Research Organization:
- Sandia National Labs., Aerosciences and Compressible Fluid Mechanics Dept., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 639806
- Report Number(s):
- SAND-98-1602C; CONF-980831-; ON: DE98006234; TRN: AHC29816%%114
- Resource Relation:
- Conference: 4. computational aerosciences workshop, Moffett Field, CA (United States), 25-27 Aug 1998; Other Information: PBD: [1998]
- Country of Publication:
- United States
- Language:
- English
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