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Analysis of Annular Plug Nozzle Flowfield

Chutkey, Kiran and Vasudevan, B and Balakrishnan, N (2014) Analysis of Annular Plug Nozzle Flowfield. In: JOURNAL OF SPACECRAFT AND ROCKETS, 51 (2). pp. 478-490.

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Official URL: http://dx.doi.org/10.2514/1.A32617

Abstract

The flowfields associated with truncated annular plug nozzles of varying lengths are studied both experimentally and using computational tools. The nozzles are designed to observe wake structure transition for the range of pressure ratios considered. A classification of the open wake regime is proposed for comparing and analyzing the plug flowfields. The three-dimensional relief experienced by the annular plug flow leads to greater wave interactions on the plug surface as compared with linear plug flow, resulting in a delayed transition of the base wake. The Reynolds averaged Navier-Stokes based solvers employed in the studies could predict the plug surface flow accurately, whereas they exhibited limitations with regard to plug base flow predictions. Based on the experimental data generated, an empirical model for predicting closed wake base pressure is proposed and compared with other models available in literature.

Item Type: Journal Article
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Additional Information: copyright for this article belongs to AMER INST AERONAUTICS ASTRONAUTICS, USA
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 16 Jun 2014 10:24
Last Modified: 16 Jun 2014 10:24
URI: http://eprints.iisc.ernet.in/id/eprint/49050

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