Parallel Numerical Simulations of Axisymmetric Projectile Flows Using Zonal-Overlapped Grids
Abstract
Recent developments in vector and parallel computer architectures provide the potential for achieving greatly enhanced computational speed in the execution of fluid dynamic flow solvers. In order to explore techniques for efficient use of these computer architectural features and to develop an improved capability for modeling highly irregular projectile geometries, the development of a zonal Navier-Stokes computational code was undertaken. This report documents the initial development and validation of this code. The code employs a multi-zone overlapped grid technique and uses MacCormack's explicit finite-differences numerical algorithm. Parallel execution features are incorporated within the code that permit implementation on both distributed and shared memory multiprocessors. The code has been applied to several challenging test problems, in particular, the application to a ramjet configuration with a highly complex internal flow which is discussed in detail. The computational results are compared with experimental measurements. The code has been found to provide for efficient utilization of vector/parallel computer architectures. Also, the zonal flow field topology has proven to be well suited for configurations with irregular geometries. (EDC)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1990
- Accession Number
- ADA221711
Entities
People
- Nisheeth R. Patel
- Walter B. Sturek
Organizations
- Ballistic Research Laboratory