Accession Number:

AD0868895

Title:

Analysis of the Axisymmetric Base-Pressure and Base-Temperature Problem with Supersonic Interacting Freestream-Nozzle Flows Based on the Flow Model of Korst, et.al. Part 2. A Comparison and Correlation with Experiment for Cylindrical Afterbodies

Descriptive Note:

[Technical Report, Technical Report]

Corporate Author:

ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL

Personal Author(s):

Report Date:

1969-12-01

Pagination or Media Count:

71

Abstract:

The functional behavior and the effects of the many geometric and flow variables on the base-pressure and base-temperature ratios can be qualitatively predicted with the flow model of Korst, et. al. Although the predicted trends are correct, the discrepancy between predicted and experimental values of the base-pressure ratios can be significant under certain conditions of geometry and flow. To improve predicted-experimental agreement and to establish a basis for a quantitative analysis of the base-pressure problem with this flow model, a modification to the flow model based on an empirically determined recompression coefficient is proposed. The recompression coefficient and its principal dependence on the nozzle-to-base radius ratio are established by detailed comparisons with experiment over a wide range of the governing variables. The recompression coefficient and the detailed comparisons with experimental data are presented.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

[A, Approved For Public Release]