Optimization of blowing in a convergent-divergent nozzle for noise reduction

Nidhi Sikarwar, Philip J. Morris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations


This paper describes the use of an adjoint method for aerodynamic and aeroacoustic optimization. An adjoint method is used to find an optimum distribution of blowing in a convergent-divergent nozzle to achieve a desired pressure distribution in the nozzle with the goal of noise reduction. This paper describes the development of a three-dimensional adjoint method for simulations on multi-block structured grids. An example is given where a particular blowing distribution is first imposed. The resulting pressure distribution is used as the target distribution with no blowing as an initial condition. It is shown that after several cycles, a blowing distribution is obtained that provides the desired or target pressure distribution.

Original languageEnglish (US)
Title of host publication20th AIAA/CEAS Aeroacoustics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102851
StatePublished - 2014
Event20th AIAA/CEAS Aeroacoustics Conference 2014 - Atlanta, GA, United States
Duration: Jun 16 2014Jun 20 2014

Publication series

Name20th AIAA/CEAS Aeroacoustics Conference


Other20th AIAA/CEAS Aeroacoustics Conference 2014
Country/TerritoryUnited States
CityAtlanta, GA

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering


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