An Evaluation of a Parabolized Navier-Stokes (PNS) Code for Cone-Cylinder-Flared Configurations.
Abstract
A Parabolized Navier-Stokes (PNS) code's capability to predict the onset of laminar and turbulent boundary layer separation, forces, moments, and pressure distributions was investigated. Predictions of incipient separation show good agreement with experimental results. Force and moment calculations were found to agree favorably with experimental data for a wide range of geometries for mach numbers from 2 to 4 with turbulent boundary layers. Limited comparison of pressure distribution data also showed good agreement. Skin friction and Stanton number calculations are presented to indicate the code's capability to calculate this information and hence, provide a complete data base for attached flow conditions. The sensitivity of these calculations to smoothing and marching parameter variations was examined and found to be acceptable for most design work. The code was found to be suitable to complement or reduce wind tunnel experimentation for the design of this class of configuration with regard to accuracy, cost and usability. Keywords: Computational fluid dynamics; Separated flow; Supersonic freestream aerodynamic prediction.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1986
- Accession Number
- ADA166650
Entities
People
- Charles J. Cottrell
- Gary T. Chapman