Preliminary Design and Computational Analysis of a C-D Nozzle with By-Pass System

Abstract:

The jet propulsion system, either for subsonic or supersonic flow, the nozzle design is a critical area of choice where its overall performance gets an adverse change. In the trending technologies, configuring any nozzle, their challenges associated with the design increases accordingly to the cruise speed of the aircraft. The latter clamshell ejector nozzle design work came up with solution for the most problems but still had its own cons of creating recirculation zone in the inner surface of the clamshells. The former world which are in next stage to design an economically conditioned nozzle system itself invents challenges in area such as jet noise suppression, exit temperature, material selection, variable throat area and exit area. The present work summarized here excelled for the most cons encountered in the latter designs. The experimental investigation and the computational studies resulted that the introduction of C-D nozzle with by-pass system had a great exposure in increasing the Mach while in cruise. The air by-pass system in the exit area supplies the atmospheric air and also acts as a cooling system for the nozzle. It was observed that the temperature curve in the exit area was found low.

• Periodical: Applied Mechanics and Materials (Volume 575)
• Pages: 389-394
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.575.389
• Online since: June 2014
• Authors: M. Nandakumar*, D. Dharmasheelan, N. Elavarasan
• Keywords: By-Pass System, CFD, Convergent-Divergent Nozzle, Fluid Flow, Nozzle Design

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