911 citations · 1.1k across the 7 of their papers we have counts for
7 papers
Three-dimensional receptivity of hypersonic sharp and blunt cones to free-stream planar waves using hierarchical input-output analysis
David A. Cook, Joseph W. Nichols
Understanding the receptivity of hypersonic flows to free-stream disturbances is crucial for predicting laminar to turbulent boundary layer transition. Input-output analysis as a r…
Linear Analysis of Boundary-Layer Instabilities on a Finned-Cone at Mach 6
Daniel B. Araya, Neal P. Bitter, Bradley M. Wheaton +8
Boundary-layer instabilities for a finned cone at Mach=6, [m], and zero incidence angle are examined using linear stability methods of varying fidelity…
Transient growth analysis of oblique shock wave/boundary-layer interactions at Mach 5.92
Anubhav Dwivedi, Nathaniel Hildebrand, Joseph W. Nichols +2
We study physical mechanisms that trigger transient growth in a high-speed spatially-developing laminar boundary layer that interacts with an oblique shock wave. We utilize an appr…
Reattachment streaks in hypersonic compression ramp flow: an input-output analysis
Anubhav Dwivedi, G. S. Sidharth, Joseph W. Nichols +2
We employ global input-output analysis to quantify amplification of exogenous disturbances in compressible boundary layer flows. Using the spatial structure of the dominant respons…
Input-output analysis of Mach 0.9 jet noise
Jinah Jeun, Joseph W. Nichols
We examine amplifying behavior of small perturbations about Reynolds-averaged Navier-Stokes solutions (RANS) of a subsonic turbulent jet using input-output (I/O) analys…
Simulation and stability analysis of oblique shock wave/boundary layer interactions at Mach 5.92
Nathaniel Hildebrand, Anubhav Dwivedi, Joseph W. Nichols +2
We investigate flow instability created by an oblique shock wave impinging on a Mach 5.92 laminar boundary layer at a transitional Reynolds number. The adverse pressure gradient of…
Sparsity-promoting dynamic mode decomposition
Mihailo R. Jovanović, Peter J. Schmid, Joseph W. Nichols
Dynamic mode decomposition (DMD) represents an effective means for capturing the essential features of numerically or experimentally generated flow fields. In order to achieve a de…