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The effect of flight on a turbulent jet: coherent structure eduction and resolvent analysis
Igor A. Maia, Liam Heidt, Ethan Pickering +3
We study coherent structures in subsonic turbulent jets subject to a flight stream. A thorough characterisation of the effects of a flight stream on the turbulent field was recentl…
Filtering Dynamical Systems Using Observations of Statistics
Eviatar Bach, Tim Colonius, Isabel Scherl +1
We consider the problem of filtering dynamical systems, possibly stochastic, using observations of statistics. Thus, the computational task is to estimate a time-evolving density $…
Spectral proper orthogonal decomposition of harmonically forced turbulent flows
Liam Heidt, Tim Colonius
Many turbulent flows exhibit time-periodic statistics. These include turbomachinery flows, flows with external harmonic forcing, and the wakes of bluff bodies. Many existing techni…
Velocity gradient analysis of a head-on vortex ring collision
Rahul Arun, Tim Colonius
We simulate the head-on collision between vortex rings with circulation Reynolds numbers of 4000 using an adaptive, multiresolution solver based on the lattice Green's function. Th…
Method for portable, scalable, and performant GPU-accelerated simulation of multiphase compressible flow
Anand Radhakrishnan, Henry Le Berre, Benjamin Wilfong +4
Multiphase compressible flows are often characterized by a broad range of space and time scales. Thus entailing large grids and small time steps, simulations of these flows on CPU-…
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…