Sakthi Prakash M

Sakthi Prakash M


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 September 2022 in Symmetry
Verified
Journal Article
Open access
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SMSakthi Prakash M
Sakthi Prakash M
ASA.R. Srikrishnan
A.R. Srikrishnan
BKBharath Kumar Krishnaraj
Bharath Kumar Krishnaraj
AJANGURAJ JAYARAJ
ANGURAJ JAYARAJ
Akram MohammadAkram Mohammad
Akram Mohammad
RVRatna Kishore Velamati
Ratna Kishore Velamati
Chevron nozzles, which are characterized by the serrations at the nozzle exit, are widely used for suppressing jet noise in aircraft engines. The noise suppression is accomplished by the enhanced mixing of the exhaust streams, which, in turn, is a result of the streamwise vorticity induced by the serrations. The present study focuses on the numerical modeling of the acoustic field in a compressible jet issuing from a chevron nozzle at a Mach number of 0.8. The study evaluates the effectiveness of turbulence modeling approaches of Large Eddy Simulation and Detached Eddy Simulation methods and compares them with the less computationally intensive Unsteady Reynolds Averaged Navier–Stokes (URANS) formulation. The Ffowcs Williams–Hawkings noise model was used to predict the overall sound pressure level in the far field. The LES predictions of the acoustic signature were found to match well with the experimental data, whereas the URANS model grossly underpredicted the sound pressure levels in the compressible jet flow field.