Improved Computational Fluid Dynamics for Continuum Hypersonic Flow
Abstract
Two separate objectives were stated at the beginning of this research project: 1) To develop new numerical algorithms for the efficient and accurate solution of the continuum equations of viscous motion for high-temperature, chemically non-equilibrium, radiating hypersonic flow. 2) To develop a new non- linear stress strain tensor for continuum equations of motion at high altitudes that is more accurate than the Navier-Stokes equations. The bottom line of this final report is that, relative to each of these two objectives, much more has been accomplished than anticipated. For example, in regard to 1), a complete code was developed for computing hard-body flow-field radiation from Navier- Stokes equations taking into account thermodynamic, chemical, and ionization nonequilibrium; and in regard to 2), hypersonic solutions to the Burnett equations were obtained for the first time, and shown to provide both the non- linear stress-strain tensor and heat flux vector needed to yield computations at high altitudes that are much more accurate than the Navier-Stokes equations. This latter development reverses a commonly accepted opinion of thirty years that the Burnett equations can not be used for such purposes. (aw)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1990
- Accession Number
- ADA216981
Entities
People
- Dean R. Chapman
- Robert W. Maccormack
Organizations
- Stanford University