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1000 results for “fluiddyn”
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Jets From Impact
When a test tube of liquid hits a surface, the curvature of the meniscus focuses the rebounding fluid into a jet. In this video, researchers show some of the many variations they’ve explored on these experiments–from changing the depth of the fluid and the shape of the container, to changing the working fluid to honey or to dry grains. It’s a nice introduction to a fascinating phenomenon! (Video and image credit: H. Watanabe et al.; research credit: H. Watanabe et al. and K. Kobayashi et al.)
Animation showing how granular jets form in a test tube impact. #2025gofm #flowVisualization #fluidDynamics #jets #meniscus #physics #science #vibration #waterImpact -
A non-contact technique that utilizes laser-induced thermo-viscous fluid flows to rotate delicate microscopic samples in all three spatial dimensions.
#Microscopy #OpticalImaging #FluidDynamics #Biophysics #Microrobotics #Microtechnology #sflorg
https://www.sflorg.com/2026/05/phy05122601.html -
A non-contact technique that utilizes laser-induced thermo-viscous fluid flows to rotate delicate microscopic samples in all three spatial dimensions.
#Microscopy #OpticalImaging #FluidDynamics #Biophysics #Microrobotics #Microtechnology #sflorg
https://www.sflorg.com/2026/05/phy05122601.html -
A non-contact technique that utilizes laser-induced thermo-viscous fluid flows to rotate delicate microscopic samples in all three spatial dimensions.
#Microscopy #OpticalImaging #FluidDynamics #Biophysics #Microrobotics #Microtechnology #sflorg
https://www.sflorg.com/2026/05/phy05122601.html -
A non-contact technique that utilizes laser-induced thermo-viscous fluid flows to rotate delicate microscopic samples in all three spatial dimensions.
#Microscopy #OpticalImaging #FluidDynamics #Biophysics #Microrobotics #Microtechnology #sflorg
https://www.sflorg.com/2026/05/phy05122601.html -
📄 Study Review
Basic Science and Pathogenesis
Deep belly breathing increases fluid movement between the brain and spine by 56% compared to normal breathing. The shift in brain blood flow also increases by 41%. Fluid exchange between head and spine is 10 times larger than within the brain.
Study type: Observational -
📄 Study Review
Basic Science and Pathogenesis
Deep belly breathing increases fluid movement between the brain and spine by 56% compared to normal breathing. The shift in brain blood flow also increases by 41%. Fluid exchange between head and spine is 10 times larger than within the brain.
Study type: Observational -
📄 Study Review
Basic Science and Pathogenesis
Deep belly breathing increases fluid movement between the brain and spine by 56% compared to normal breathing. The shift in brain blood flow also increases by 41%. Fluid exchange between head and spine is 10 times larger than within the brain.
Study type: Observational -
📄 Study Review
Basic Science and Pathogenesis
Deep belly breathing increases fluid movement between the brain and spine by 56% compared to normal breathing. The shift in brain blood flow also increases by 41%. Fluid exchange between head and spine is 10 times larger than within the brain.
Study type: Observational -
Liquid Pulleys and Gears
In mechanical systems, gears and pulleys transmit rotation from one location to another. Here, researchers explore a fluid dynamical version of such systems. The set-up consists of two rotors contained in a cylindrical corral filled with a water-glycerin mixture. One of the rotors is active, marked here with orange; the other (blue) one is passive, meaning that it can rotate due to the forces on it but it is not actively driven by a motor.
The three flow visualizations illustrate different configurations the rotors can take on, depending on their separation distance. In the top image, the rotors have a moderate separation distance and the passive one rotates opposite of the active one. That rotation direction is set by the high-shear flow on its inner side. If the rotors are close together (left image), they rotate in the same direction, aided by strong shear on the outside edge of the passive rotor; this mimics being linked with a belt. And, finally, if the rotors are widely separated, they also corotate, with the fluid in between acting like a virtual gear linking them. (Image credit: J. Smith et al.)
Research poster showing how an active and a passive rotor can be paired through hydrodynamic interactions. #2025gofm #flowVisualization #fluidDynamics #physics #science #viscousFlow -
Liquid Pulleys and Gears
In mechanical systems, gears and pulleys transmit rotation from one location to another. Here, researchers explore a fluid dynamical version of such systems. The set-up consists of two rotors contained in a cylindrical corral filled with a water-glycerin mixture. One of the rotors is active, marked here with orange; the other (blue) one is passive, meaning that it can rotate due to the forces on it but it is not actively driven by a motor.
The three flow visualizations illustrate different configurations the rotors can take on, depending on their separation distance. In the top image, the rotors have a moderate separation distance and the passive one rotates opposite of the active one. That rotation direction is set by the high-shear flow on its inner side. If the rotors are close together (left image), they rotate in the same direction, aided by strong shear on the outside edge of the passive rotor; this mimics being linked with a belt. And, finally, if the rotors are widely separated, they also corotate, with the fluid in between acting like a virtual gear linking them. (Image credit: J. Smith et al.)
Research poster showing how an active and a passive rotor can be paired through hydrodynamic interactions. #2025gofm #flowVisualization #fluidDynamics #physics #science #viscousFlow -
Liquid Pulleys and Gears
In mechanical systems, gears and pulleys transmit rotation from one location to another. Here, researchers explore a fluid dynamical version of such systems. The set-up consists of two rotors contained in a cylindrical corral filled with a water-glycerin mixture. One of the rotors is active, marked here with orange; the other (blue) one is passive, meaning that it can rotate due to the forces on it but it is not actively driven by a motor.
The three flow visualizations illustrate different configurations the rotors can take on, depending on their separation distance. In the top image, the rotors have a moderate separation distance and the passive one rotates opposite of the active one. That rotation direction is set by the high-shear flow on its inner side. If the rotors are close together (left image), they rotate in the same direction, aided by strong shear on the outside edge of the passive rotor; this mimics being linked with a belt. And, finally, if the rotors are widely separated, they also corotate, with the fluid in between acting like a virtual gear linking them. (Image credit: J. Smith et al.)
Research poster showing how an active and a passive rotor can be paired through hydrodynamic interactions. #2025gofm #flowVisualization #fluidDynamics #physics #science #viscousFlow -
Liquid Pulleys and Gears
In mechanical systems, gears and pulleys transmit rotation from one location to another. Here, researchers explore a fluid dynamical version of such systems. The set-up consists of two rotors contained in a cylindrical corral filled with a water-glycerin mixture. One of the rotors is active, marked here with orange; the other (blue) one is passive, meaning that it can rotate due to the forces on it but it is not actively driven by a motor.
The three flow visualizations illustrate different configurations the rotors can take on, depending on their separation distance. In the top image, the rotors have a moderate separation distance and the passive one rotates opposite of the active one. That rotation direction is set by the high-shear flow on its inner side. If the rotors are close together (left image), they rotate in the same direction, aided by strong shear on the outside edge of the passive rotor; this mimics being linked with a belt. And, finally, if the rotors are widely separated, they also corotate, with the fluid in between acting like a virtual gear linking them. (Image credit: J. Smith et al.)
Research poster showing how an active and a passive rotor can be paired through hydrodynamic interactions. #2025gofm #flowVisualization #fluidDynamics #physics #science #viscousFlow -
“Spiralling Textures”
Wet fur forms a spiral of spiky hairs in this image by photographer Ben Dalgleish. For thin and flexible fibers like hair, a little moisture lets them clump together, forming stiffer (but still flexible) shapes. The technical term for this water-meets-flexible-solid phenomenon is elastocapillarity, and it lets you do things like wind a wire with a bubble. It also makes a big difference when washing hair, including in space. (Image credit: B. Dalgleish/BWPA; via Colossal)
#biology #elastocapillarity #fluidDynamics #fluidsAsArt #physics #science -
Ah yes, because what the world really needed was a 37x speedup in Lattice Boltzmann cylinder flow 🤦♂️. Clearly, the future of humanity hinges on reducing the cost of simulating vortex shedding 🌀 while the rest of us are just struggling to log into GitHub without existential dread. But go ahead, revolutionize fluid dynamics one cylinder at a time! 🚀
https://github.com/alikamp/Parks-KPBM-Scaling #LatticeBoltzmann #VortexShedding #FluidDynamics #TechRevolution #ExistentialDread #HackerNews #ngated -
Ah yes, because what the world really needed was a 37x speedup in Lattice Boltzmann cylinder flow 🤦♂️. Clearly, the future of humanity hinges on reducing the cost of simulating vortex shedding 🌀 while the rest of us are just struggling to log into GitHub without existential dread. But go ahead, revolutionize fluid dynamics one cylinder at a time! 🚀
https://github.com/alikamp/Parks-KPBM-Scaling #LatticeBoltzmann #VortexShedding #FluidDynamics #TechRevolution #ExistentialDread #HackerNews #ngated -
Ah yes, because what the world really needed was a 37x speedup in Lattice Boltzmann cylinder flow 🤦♂️. Clearly, the future of humanity hinges on reducing the cost of simulating vortex shedding 🌀 while the rest of us are just struggling to log into GitHub without existential dread. But go ahead, revolutionize fluid dynamics one cylinder at a time! 🚀
https://github.com/alikamp/Parks-KPBM-Scaling #LatticeBoltzmann #VortexShedding #FluidDynamics #TechRevolution #ExistentialDread #HackerNews #ngated -
Ah yes, because what the world really needed was a 37x speedup in Lattice Boltzmann cylinder flow 🤦♂️. Clearly, the future of humanity hinges on reducing the cost of simulating vortex shedding 🌀 while the rest of us are just struggling to log into GitHub without existential dread. But go ahead, revolutionize fluid dynamics one cylinder at a time! 🚀
https://github.com/alikamp/Parks-KPBM-Scaling #LatticeBoltzmann #VortexShedding #FluidDynamics #TechRevolution #ExistentialDread #HackerNews #ngated -
“Sidewall Symphony”
Flow visualization is both an art and science in fluid dynamics. Here, researchers were interested in studying the separation bubble that forms over a backward-facing ramp–a shape that shows up, for example, on an aircraft. In these areas, the flow over the surface separates, leaving an unsteady, recirculating bubble.
That’s the flow that researchers are visualizing here. They’ve done so by adding tiny helium-filled soap bubbles to the flow. With bright lights illuminating the bubbles, each one leaves a streak in a photograph, showing where the bubble moved during the time the camera’s shutter was open. Although images like these are beautiful, they can also be analyzed by computers to extract the underlying flow that created the image. (Image and research credit: B. Steinfurth et al.; see also here)
#2025gofm #flowVisualization #fluidDynamics #fluidsAsArt #physics #science #turbulence -
“Sidewall Symphony”
Flow visualization is both an art and science in fluid dynamics. Here, researchers were interested in studying the separation bubble that forms over a backward-facing ramp–a shape that shows up, for example, on an aircraft. In these areas, the flow over the surface separates, leaving an unsteady, recirculating bubble.
That’s the flow that researchers are visualizing here. They’ve done so by adding tiny helium-filled soap bubbles to the flow. With bright lights illuminating the bubbles, each one leaves a streak in a photograph, showing where the bubble moved during the time the camera’s shutter was open. Although images like these are beautiful, they can also be analyzed by computers to extract the underlying flow that created the image. (Image and research credit: B. Steinfurth et al.; see also here)
#2025gofm #flowVisualization #fluidDynamics #fluidsAsArt #physics #science #turbulence -
“Sidewall Symphony”
Flow visualization is both an art and science in fluid dynamics. Here, researchers were interested in studying the separation bubble that forms over a backward-facing ramp–a shape that shows up, for example, on an aircraft. In these areas, the flow over the surface separates, leaving an unsteady, recirculating bubble.
That’s the flow that researchers are visualizing here. They’ve done so by adding tiny helium-filled soap bubbles to the flow. With bright lights illuminating the bubbles, each one leaves a streak in a photograph, showing where the bubble moved during the time the camera’s shutter was open. Although images like these are beautiful, they can also be analyzed by computers to extract the underlying flow that created the image. (Image and research credit: B. Steinfurth et al.; see also here)
#2025gofm #flowVisualization #fluidDynamics #fluidsAsArt #physics #science #turbulence -
“Sidewall Symphony”
Flow visualization is both an art and science in fluid dynamics. Here, researchers were interested in studying the separation bubble that forms over a backward-facing ramp–a shape that shows up, for example, on an aircraft. In these areas, the flow over the surface separates, leaving an unsteady, recirculating bubble.
That’s the flow that researchers are visualizing here. They’ve done so by adding tiny helium-filled soap bubbles to the flow. With bright lights illuminating the bubbles, each one leaves a streak in a photograph, showing where the bubble moved during the time the camera’s shutter was open. Although images like these are beautiful, they can also be analyzed by computers to extract the underlying flow that created the image. (Image and research credit: B. Steinfurth et al.; see also here)
#2025gofm #flowVisualization #fluidDynamics #fluidsAsArt #physics #science #turbulence -
Insect Wings in Extreme Macro
Photographer Chris Perani is fascinated by the microstructures of insect wings, which he captures in “extreme macro” through focus stacking–letting us see wings in glorious micron-scale detail. In addition to giving insects their brilliant colors and irridescence, these structures serve another key role: they help insects stay dry. In a world where contact with water is unavoidable, insects have instead evolved to trap air in the gaps of their wings, letting water slide off instead of sticking. (Image credit: C. Perani; via Colossal)
#biology #droplets #fluidDynamics #fluidsAsArt #hydrophobic #interference #physics #science #superhydrophobic #thinFilm -
Insect Wings in Extreme Macro
Photographer Chris Perani is fascinated by the microstructures of insect wings, which he captures in “extreme macro” through focus stacking–letting us see wings in glorious micron-scale detail. In addition to giving insects their brilliant colors and irridescence, these structures serve another key role: they help insects stay dry. In a world where contact with water is unavoidable, insects have instead evolved to trap air in the gaps of their wings, letting water slide off instead of sticking. (Image credit: C. Perani; via Colossal)
#biology #droplets #fluidDynamics #fluidsAsArt #hydrophobic #interference #physics #science #superhydrophobic #thinFilm -
Insect Wings in Extreme Macro
Photographer Chris Perani is fascinated by the microstructures of insect wings, which he captures in “extreme macro” through focus stacking–letting us see wings in glorious micron-scale detail. In addition to giving insects their brilliant colors and irridescence, these structures serve another key role: they help insects stay dry. In a world where contact with water is unavoidable, insects have instead evolved to trap air in the gaps of their wings, letting water slide off instead of sticking. (Image credit: C. Perani; via Colossal)
#biology #droplets #fluidDynamics #fluidsAsArt #hydrophobic #interference #physics #science #superhydrophobic #thinFilm -
Insect Wings in Extreme Macro
Photographer Chris Perani is fascinated by the microstructures of insect wings, which he captures in “extreme macro” through focus stacking–letting us see wings in glorious micron-scale detail. In addition to giving insects their brilliant colors and irridescence, these structures serve another key role: they help insects stay dry. In a world where contact with water is unavoidable, insects have instead evolved to trap air in the gaps of their wings, letting water slide off instead of sticking. (Image credit: C. Perani; via Colossal)
#biology #droplets #fluidDynamics #fluidsAsArt #hydrophobic #interference #physics #science #superhydrophobic #thinFilm -
https://www.europesays.com/uk/895302/ Capillary Leidenfrost effect | Nature Physics #Atomic #ClassicalAndContinuumPhysics #ComplexSystems #CondensedMatterPhysics #FluidDynamics #Fluidics #general #MathematicalAndComputationalPhysics #Molecular #OpticalAndPlasmaPhysics #Physics #Science #Theoretical #UK #UnitedKingdom
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Scrubbing Bubbles
Cleaning produce helps fruits and vegetables last longer and reduces the chances for foodborne illness. But it can be a difficult feat with soft, delicate foods like tomatoes, berries, or greens. Current methods often combine ultrasonic cleaning and chemicals like chlorine. Instead, researchers are looking to boost the cleaning power of bubbles themselves by giving them an acoustic pick-me-up.
Stop-and-go. A bubble slides along an inclined surface in a pronounced stop-and-go motion when vibrated near its frequency for translational resonance.The team combined a bubble-filled bath with sound at low (sub-cavitation) frequencies. They found that driving sound waves at the right frequency could vibrate the bubbles in a way that made them slide in a stop-and-go motion along inclined surfaces. This swaying significantly boosted their cleaning power; getting surfaces 90% cleaner than non-resonating bubbles did. (Image credit: S. Hok/Cornell University; video and research credit: Y. Lin et al.; via Gizmodo)
#acoustics #bubbles #fluidDynamics #physics #resonance #science #shear #vibration -
Scrubbing Bubbles
Cleaning produce helps fruits and vegetables last longer and reduces the chances for foodborne illness. But it can be a difficult feat with soft, delicate foods like tomatoes, berries, or greens. Current methods often combine ultrasonic cleaning and chemicals like chlorine. Instead, researchers are looking to boost the cleaning power of bubbles themselves by giving them an acoustic pick-me-up.
Stop-and-go. A bubble slides along an inclined surface in a pronounced stop-and-go motion when vibrated near its frequency for translational resonance.The team combined a bubble-filled bath with sound at low (sub-cavitation) frequencies. They found that driving sound waves at the right frequency could vibrate the bubbles in a way that made them slide in a stop-and-go motion along inclined surfaces. This swaying significantly boosted their cleaning power; getting surfaces 90% cleaner than non-resonating bubbles did. (Image credit: S. Hok/Cornell University; video and research credit: Y. Lin et al.; via Gizmodo)
#acoustics #bubbles #fluidDynamics #physics #resonance #science #shear #vibration -
Scrubbing Bubbles
Cleaning produce helps fruits and vegetables last longer and reduces the chances for foodborne illness. But it can be a difficult feat with soft, delicate foods like tomatoes, berries, or greens. Current methods often combine ultrasonic cleaning and chemicals like chlorine. Instead, researchers are looking to boost the cleaning power of bubbles themselves by giving them an acoustic pick-me-up.
Stop-and-go. A bubble slides along an inclined surface in a pronounced stop-and-go motion when vibrated near its frequency for translational resonance.The team combined a bubble-filled bath with sound at low (sub-cavitation) frequencies. They found that driving sound waves at the right frequency could vibrate the bubbles in a way that made them slide in a stop-and-go motion along inclined surfaces. This swaying significantly boosted their cleaning power; getting surfaces 90% cleaner than non-resonating bubbles did. (Image credit: S. Hok/Cornell University; video and research credit: Y. Lin et al.; via Gizmodo)
#acoustics #bubbles #fluidDynamics #physics #resonance #science #shear #vibration