Publication: Numerical study on modification of the chevron nozzle design for reduction of noise emission
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Date
2022-12-01
Authors
Abd Rahim, Muhammad Afiq Farahi
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Abstract
This study investigates into the effects of various vortex generator designs on the chevron nozzle for improving mixing between hot and cold gases. A vortex generator is a well recognized device on creating vortices in a stream. The horseshoe design, the counter-rotating arrangement, and the co-counter rotating arrangement are three types of vortex generators used in this study. These vortex generators are used to improve aerodynamic performance of the wing and reduce noise generated by aerodynamic noise at a fuel port section. This study uses a Chevron nozzle design based on NASA Glen Research Centre SMC006 as initial design and these three different vortex generators have been applied on the root of SMC006 to test the effectiveness of a different types of vortex generators for improving mixing in the liquid. An improvement in mixing between the core's hot gases and cold gases from the bypass flow or ambient flow might be achieved by a counter rotating design that appears like it would work well.