Optimization of the convergent-divergent nozzle tip and reducing the acoustic energy

Year 2025, Volume: 9 Issue: 3, 417 - 424

Kumaran T , Balaji Elangovan , Swetha S , Raja Kannan , Murugu Nachippan Nachiappan , Sarangapani Palani

https://doi.org/10.31127/tuje.1561759

Abstract

One of the practical components that can be found in aircraft engines, the Delaval nozzle, works to improve the aircraft's performance in terms of its stability and its capacity to manoeuvre at different speeds of operation. This research concentrates on the acoustic behaviors shown by this nozzle during the transition from low rate to sonic speed. The modification of the nozzle tip at various degrees of inclination on the transition velocity is the procedure used to minimize the amount of acoustic energy emitted. The acoustic behavior is analyzed based on the FW-H acoustics model utilized, and the optimization problem is solved using the practical eddy simulation approach in CFD. The acoustic Power, measured in dB, is estimated at various angles on the nozzle tip, and the performance of the Delaval nozzle is used to show how the redesigned nozzle tip affects the nozzle's acoustic behavior.

Keywords

Delaval nozzle, CFD, Modified Nozzle Tip, Aeroacoustics

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