#cavitation — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #cavitation, aggregated by home.social.
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When two cavitation bubbles of different sizes collapse, they form distinct jet patterns that affect local pressure and energy distribution.
Understanding these dynamics helps predict damage in hydraulic systems.
🔗 https://doi.org/10.1063/5.0319732
#cavitation #bubbledynamics #fluidmechanics #EnergyTransfer #hydraulics
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Aus dem Archiv:
Ein roter Laserpuls hat in Wasser eine explodierende Plasmablase gezündet.
Von links erfasst ein hochbrillanter Röntgen-Freie-Elektronen-Laserblitz die Szene holografisch.
Ein Mikrofon zeichnet akustische Signale auf.
An der Wand sehen wir die entstehenden Blasen zu verschiedenen Zeitpunkten.(nächster Trot: Link zum Video)
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Aus dem Archiv:
Ein roter Laserpuls hat in Wasser eine explodierende Plasmablase gezündet.
Von links erfasst ein hochbrillanter Röntgen-Freie-Elektronen-Laserblitz die Szene holografisch.
Ein Mikrofon zeichnet akustische Signale auf.
An der Wand sehen wir die entstehenden Blasen zu verschiedenen Zeitpunkten.(nächster Trot: Link zum Video)
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Aus dem Archiv:
Ein roter Laserpuls hat in Wasser eine explodierende Plasmablase gezündet.
Von links erfasst ein hochbrillanter Röntgen-Freie-Elektronen-Laserblitz die Szene holografisch.
Ein Mikrofon zeichnet akustische Signale auf.
An der Wand sehen wir die entstehenden Blasen zu verschiedenen Zeitpunkten.(nächster Trot: Link zum Video)
-
Aus dem Archiv:
Ein roter Laserpuls hat in Wasser eine explodierende Plasmablase gezündet.
Von links erfasst ein hochbrillanter Röntgen-Freie-Elektronen-Laserblitz die Szene holografisch.
Ein Mikrofon zeichnet akustische Signale auf.
An der Wand sehen wir die entstehenden Blasen zu verschiedenen Zeitpunkten.(nächster Trot: Link zum Video)
-
Aus dem Archiv:
Ein roter Laserpuls hat in Wasser eine explodierende Plasmablase gezündet.
Von links erfasst ein hochbrillanter Röntgen-Freie-Elektronen-Laserblitz die Szene holografisch.
Ein Mikrofon zeichnet akustische Signale auf.
An der Wand sehen wir die entstehenden Blasen zu verschiedenen Zeitpunkten.(nächster Trot: Link zum Video)
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Inside Cuttlefish Suction
Cuttlefish, like many cephalopods, catch prey with their tentacles. Suction cups along the tentacle help them hold on. In this video, researchers share preliminary studies of what goes on inside these suction cups as they’re detached. The low pressures inside the suction cup cause water to vaporize, temporarily. As seen for both the cuttlefish and a bio-inspired suction cup, small bubbles form inside the attached cup, coalesce into larger bubbles, and then get destroyed in the catastrophic leak that occurs once part of the suction cup detaches. (Video and image credit: B. Zhang et al.)
#biology #bubbleCollapse #cavitation #cuttlefish #flowVisualization #fluidDynamics #physics #science #suction
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Inside Cuttlefish Suction
Cuttlefish, like many cephalopods, catch prey with their tentacles. Suction cups along the tentacle help them hold on. In this video, researchers share preliminary studies of what goes on inside these suction cups as they’re detached. The low pressures inside the suction cup cause water to vaporize, temporarily. As seen for both the cuttlefish and a bio-inspired suction cup, small bubbles form inside the attached cup, coalesce into larger bubbles, and then get destroyed in the catastrophic leak that occurs once part of the suction cup detaches. (Video and image credit: B. Zhang et al.)
#biology #bubbleCollapse #cavitation #cuttlefish #flowVisualization #fluidDynamics #physics #science #suction
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Inside Cuttlefish Suction
Cuttlefish, like many cephalopods, catch prey with their tentacles. Suction cups along the tentacle help them hold on. In this video, researchers share preliminary studies of what goes on inside these suction cups as they’re detached. The low pressures inside the suction cup cause water to vaporize, temporarily. As seen for both the cuttlefish and a bio-inspired suction cup, small bubbles form inside the attached cup, coalesce into larger bubbles, and then get destroyed in the catastrophic leak that occurs once part of the suction cup detaches. (Video and image credit: B. Zhang et al.)
#biology #bubbleCollapse #cavitation #cuttlefish #flowVisualization #fluidDynamics #physics #science #suction
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Inside Cuttlefish Suction
Cuttlefish, like many cephalopods, catch prey with their tentacles. Suction cups along the tentacle help them hold on. In this video, researchers share preliminary studies of what goes on inside these suction cups as they’re detached. The low pressures inside the suction cup cause water to vaporize, temporarily. As seen for both the cuttlefish and a bio-inspired suction cup, small bubbles form inside the attached cup, coalesce into larger bubbles, and then get destroyed in the catastrophic leak that occurs once part of the suction cup detaches. (Video and image credit: B. Zhang et al.)
#biology #bubbleCollapse #cavitation #cuttlefish #flowVisualization #fluidDynamics #physics #science #suction
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Inside Cuttlefish Suction
Cuttlefish, like many cephalopods, catch prey with their tentacles. Suction cups along the tentacle help them hold on. In this video, researchers share preliminary studies of what goes on inside these suction cups as they’re detached. The low pressures inside the suction cup cause water to vaporize, temporarily. As seen for both the cuttlefish and a bio-inspired suction cup, small bubbles form inside the attached cup, coalesce into larger bubbles, and then get destroyed in the catastrophic leak that occurs once part of the suction cup detaches. (Video and image credit: B. Zhang et al.)
#biology #bubbleCollapse #cavitation #cuttlefish #flowVisualization #fluidDynamics #physics #science #suction
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Tag drei
Sven Schroeder, Leeds: Precipitation and dissolution of solids in water: Kinetics beyond classical nucleation theory
Llorenc Cremonesi, Mailand: Experimental multiparametric characterisation of aerosols through light scattering
Melanie Schnell, DESY+Kiel: A tiny droplet of acid:Hyperfine-resolved rotational spectroscopy reveals HCl dissociation upon microsolvation
mo: Taming the bubbles: #Cavitation dynamics revealed by #XFEL pulses
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Dry Plants Warn Away Moths
Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.
In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)
#acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration
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Dry Plants Warn Away Moths
Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.
In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)
#acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration
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Dry Plants Warn Away Moths
Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.
In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)
#acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration
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Dry Plants Warn Away Moths
Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.
In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)
#acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration
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Dry Plants Warn Away Moths
Drought-stressed plants let out ultrasonic distress cries that moths use to avoid plants that can’t support their offspring. In ideal circumstances, a plant is constantly pulling water up from the soil, through its roots, and out its leaves through transpiration. This creates a strong negative pressure — varying from 2 to 17 atmospheres’ worth — inside the plant’s xylem. If there’s not enough water to keep the plant’s inner flow going, cavitation occurs — essentially a tiny vacuum bubble opens in the xylem. That cavitation isn’t silent; it creates a click at ultrasonic frequencies above human hearing. But just because we don’t hear it doesn’t mean that sound goes unheard.
In fact, recent research suggests that, not only do moths hear the plant’s cavitation cries, female moths will avoid laying eggs on a healthy plant that sounds like it’s cavitating. Evolutionarily, this makes sense. Hatchlings rely on their birth plant for food and habitat; if an adult moth picks a dying, drought-stressed plant, its offspring won’t survive. It pays to be sensitive to the plant’s signs of distress. (Image credit: Khalil; research credit: R. Seltzer et al.; via NYTimes)
#acoustics #biology #cavitation #fluidDynamics #moths #physics #plants #science #transpiration