173 citations · 244 across the 5 of their papers we have counts for
5 papers
Bispectral decomposition and energy transfer in a turbulent jet
Akhil Nekkanti, Ethan Pickering, Oliver T. Schmidt +1
We employ bispectral mode decomposition (BMD) to investigate coherent triadic interactions and nonlinear energy transfer in a subsonic turbulent jet. BMD extracts the flow structur…
Nonlinear dynamics of vortex pairing in transitional jets
Akhil Nekkanti, Tim Colonius, Oliver T. Schmidt
This study investigates the onset of linear instabilities and their later nonlinear interactions in the shear layer of an initially-laminar jet using a combination of stability ana…
Large-scale streaks in a turbulent bluff body wake
Akhil Nekkanti, Sheel Nidhan, Oliver T. Schmidt +1
A turbulent circular disk wake database (Chongsiripinyo \& Sarkar, \textit{J. Fluid Mech.}, vol. 885, 2020) at Reynolds number is inte…
Gappy spectral proper orthogonal decomposition
Akhil Nekkanti, Oliver T. Schmidt
Experimental spatio-temporal flow data often contain gaps or other types of undesired artifacts. To reconstruct flow data in the compromised or missing regions, a data completion m…
Frequency-time analysis, low-rank reconstruction and denoising of turbulent flows using SPOD
Akhil Nekkanti, Oliver T. Schmidt
Four different applications of spectral proper orthogonal decomposition (SPOD): low-rank reconstruction, denoising, frequency-time analysis, and prewhitening are demonstrated on la…