6 papers
Pumping by Two-frequency Steady Streaming: Impact of Amplitude Ratio and Phase
Hyun S. Lee, Becca Thomases, William D. Ristenpart +1
The classical phenomenon of steady streaming around a circular cylinder oscillating with a single frequency results in a symmetric quadrupole-like flow structure. In [H.S.\ Lee, \t…
Pumping and Steady Streaming driven by Two-Frequency Oscillations of a Cylinder
Hyun S. Lee, William D. Ristenpart, Robert D. Guy
The classical problem of steady streaming induced by an oscillating object has been studied extensively, but prior work has focused almost exclusively on single-frequency oscillati…
Optimizing Metachronal Paddling with Reinforcement Learning at Low Reynolds Number
Alana A. Bailey, Robert D. Guy
Metachronal paddling is a swimming strategy in which an organism oscillates sets of adjacent limbs with a constant phase lag, propagating a metachronal wave through its limbs and p…
Quantification of Flagellar Gait Changes with Combined Shape Mode Analysis and Swimming Simulations
Kelli E. Gutierrez, Becca Thomases, Paulo E. Arratia +1
Many different microswimmers propel themselves using flagella that beat periodically. The shape of the flagellar beat and swimming speed have been observed to change with fluid rhe…
A Period-Doubling Route to Chaos in Viscoelastic Kolmogorov Flow
Jeffrey Nichols, Robert D. Guy, Becca Thomases
Polymer solutions can develop chaotic flows, even at low inertia. This purely elastic turbulence is well studied, but little is known about the transition to chaos. In 2D channel f…
Undulatory swimming in viscoelastic fluids under confinement
D. Gagnon, B. Thomases, R. D. Guy +1
Low Reynolds number swimmers frequently move near boundaries, such as spirochetes moving through porous tissues and sperm navigating the reproductive tract. Furthermore, these micr…