Optimal vortex formation as a unifying principle in biological propulsion
JO Dabiri - Annual review of fluid mechanics, 2009 - annualreviews.org
I review the concept of optimal vortex formation and examine its relevance to propulsion in
biological and bio-inspired systems, ranging from the human heart to underwater vehicles …
biological and bio-inspired systems, ranging from the human heart to underwater vehicles …
The significance of vortex ring formation to the impulse and thrust of a starting jet
PS Krueger, M Gharib - Physics of fluids, 2003 - pubs.aip.org
The recent work of Gharib, Rambod, and Shariff [J. Fluid Mech. 360, 121 (1998)] studied
vortex rings formed by starting jets generated using a piston-cylinder mechanism. Their …
vortex rings formed by starting jets generated using a piston-cylinder mechanism. Their …
A computational study of expiratory particle transport and vortex dynamics during breathing with and without face masks
We present high-fidelity numerical simulations of expiratory biosol transport during normal
breathing under indoor, stagnant air conditions with and without a facile mask. We …
breathing under indoor, stagnant air conditions with and without a facile mask. We …
Fluid entrainment by isolated vortex rings
Of particular importance to the development of models for isolated vortex ring dynamics in a
real fluid is knowledge of ambient fluid entrainment by the ring. This time-dependent process …
real fluid is knowledge of ambient fluid entrainment by the ring. This time-dependent process …
Starting flow through nozzles with temporally variable exit diameter
Starting flow through a nozzle or orifice typically results in the transient formation of a
leading vortex ring and trailing jet. Experiments are conducted to investigate the dynamics of …
leading vortex ring and trailing jet. Experiments are conducted to investigate the dynamics of …
Design and experiments of a squid-like aquatic-aerial vehicle with soft morphing fins and arms
T Hou, X Yang, H Su, B Jiang, L Chen… - … on robotics and …, 2019 - ieeexplore.ieee.org
Aquatic-aerial multimodal vehicle is a new concept aircraft that can freely shuttle between
water and air. Some of the natural organisms provide the inspiration to realize this multi …
water and air. Some of the natural organisms provide the inspiration to realize this multi …
Vortex ring formation at the open end of a shock tube: a particle image velocimetry study
JH Arakeri, D Das, A Krothapalli, L Lourenco - Physics of fluids, 2004 - pubs.aip.org
The vortex ring generated subsequent to the diffraction of a shock wave from the open end
of a shock tube is studied using particle image velocimetry. We examine the early evolution …
of a shock tube is studied using particle image velocimetry. We examine the early evolution …
Hydrodynamics of pulsed jetting in juvenile and adult brief squid Lolliguncula brevis: evidence of multiple jet `modes' and their implications for propulsive efficiency
IK Bartol, PS Krueger, WJ Stewart… - Journal of …, 2009 - journals.biologists.com
The dynamics of pulsed jetting in squids throughout ontogeny is not well understood,
especially with regard to the development of vortex rings, which are common features of …
especially with regard to the development of vortex rings, which are common features of …
The role of optimal vortex formation in biological fluid transport
Animal phyla that require macro-scale fluid transport for functioning have repeatedly and
often independently converged on the use of jet flows. During flow initiation these jets form …
often independently converged on the use of jet flows. During flow initiation these jets form …
A wake-based correlate of swimming performance and foraging behavior in seven co-occurring jellyfish species
It is generally accepted that animal–fluid interactions have shaped the evolution of animals
that swim and fly. However, the functional ecological advantages associated with those …
that swim and fly. However, the functional ecological advantages associated with those …