Numerical Assessment of the Computer Codes for Analyzing Boundary Layer Transition on a Heated Axisymmetric Body,
Abstract
An assessment of the available analytical tools for analyzing boundary-layer transition on a heated axisymmetric body has been performed. The approach is focused on the evaluation of the validity and efficiency of the three major components in the TAPS Code, Axisymmetric Potential Flow, Boundary Layer Flow, and Linear Stability Analysis. In addition, further developments of the TAPS Code, the incorporation of roughness model is also presented. Several conclusions on the code comparison have been made. For axisymmetric potential flow, the numerical approach of Landweber for solving the Fredholm integral equation of the first kind is relatively simple and less time consuming when compared with the approach of Hess and Smith for solving the Fredholm integral equation of the second kind. For bodies with sudden changes in slope and curvature, or with local bumps, the approach of Hess and Smith can provide a better approximation than Landweber's for potential flow calculations. For boundary-layer flow calculation, a new code developed by Cebeci appears to have merit for improving computational efficiency. The key factor is attributed to the fact that it solves the momentum and energy equations simultaneously. For the purpose of spatial amplification analysis, the stability component of the TAPS Code is less expensive than the code developed by Lowell and Reshotko. Since the validity of partial non-parallel flow effect in the TAPS Code is questionable and the computer code to account for the effect of full non-parallel flow with heat transfer is not available at present, the parallel flow option in the TAPS Code is recommended.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1978
- Accession Number
- ADA062887
Entities
People
- Kent T. S. Tzou