COMPUTATIONAL ANALYSIS OF VENTED SUPERSONIC EXHAUST NOZZLES USING A MULTIBLOCK MULTIZONE STRATEGY

Citation
Jr. Carlson et al., COMPUTATIONAL ANALYSIS OF VENTED SUPERSONIC EXHAUST NOZZLES USING A MULTIBLOCK MULTIZONE STRATEGY, Journal of propulsion and power, 9(6), 1993, pp. 834-839
Citations number
10
Categorie Soggetti
Aerospace Engineering & Tecnology
ISSN journal
07484658
Volume
9
Issue
6
Year of publication
1993
Pages
834 - 839
Database
ISI
SICI code
0748-4658(1993)9:6<834:CAOVSE>2.0.ZU;2-F
Abstract
A high-expansion ratio axisymmetric nozzle with and without longitudin al trailing-edge slots has been examined. Solutions were determined us ing a three-dimensional Navier-Stokes computer code. These results wer e compared with experimental data to determine the accuracy of the cod e for nozzle applications. Additionally, off-body flow physics were ex amined to understand the changes in nozzle performance with differing operating conditions. Highly overexpanded and near-design jet exhaust flows were simulated exhausting into subsonic and supersonic freestrea m Mach numbers. Pressure and velocity vector flowfields are shown and the predicted internal nozzle performance is compared with experimenta l data. Solutions were developed using laminar viscous stresses and th in-layer approximations.