Posts Tagged ‘Fluid dynamics’

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Pacific Light

September 7, 2013

Music by Boris Blank
Video by Ruslan Khasanov

Via Rus Khasanov

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Water Bridge – Collective Molecular Dynamics

January 3, 2013

Water bridge – surprising phenomenon formed by water exposed to high voltage. This effect represent “Collective Molecular Dynamics”,

“Voeikov: Could the dynamics of formation of the water bridge be also at work in the process of formation of living structures?”

When a high voltage is applied to pure water filling two beakers kept close to each other, a connection forms spontaneously, giving the impression of a floating water bridge. This phenomenon is of special interest, since it comprises a number of phenomena currently tackled in modern water science. The formation and the main properties of this floating water bridge are analyzed in the conceptual framework of quantum electrodynamics.

Via Zyga, Lisa (2007-09-28). “Water forms floating ‘bridge’ when exposed to high voltage”. Science News. Retrieved 2007-09-29

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Ferienne, on fluid dynamics, magnetism and cymatics.

May 24, 2012

Ferienne is the third installment of an ongoing experimental study on fluid dynamics, magnetism and cymatics. These invisible forces of nature are then made visible through various liquids and mixtures, and they form patterns that are otherwise invisible to the naked eye.

afiqomar.com

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Fluid dynamics of brine shrimp (Artemia) larvae swimming like a butterfly

April 11, 2012

“The Brine Shrimp’s Butterfly Stroke.” From Brennan Johnson, Deborah Garrity, Lakshmi Prasad Dasi (Colorado State University, Fort Collins, CO, USA.)

Abstract: We investigate the fluid dynamics of brine shrimp larvae swimming in this gallery of fluid motion video. Time resolved particle image velocimetry was performed using nano-particles as seeding material to measure the time dependent velocity and vorticity fields. The Reynolds number of the flow was roughly 8 and the Womerseley number (ratio of periodic forcing to viscous forcing) was about 5. Vorticity dynamics reveals the formation of a vortex ring structure at the tip of each arm at the beginning of the power stroke. This two vortex system evolves dramatically with time as the stroke progresses. The outer circulation is noted to weaken while the inner circulation strengthens over the power stroke. The gaining strength of the inner vortex correlates with the acceleration and forward movement of the larvae.