Articles tagged with Hydrodynamics
Researchers are using AI to model complex turbulent flows, including wind, aerosols, and combustion, to quantify uncertainty in foundation models. The project aims to create a physics-constrained AI foundation model for complex flows important to energy systems.
Roll waves play a crucial role in hydraulic engineering, but current design standards overlook their formation. Researchers at Kyoto University discovered a fundamental flaw in existing standards, revealing the importance of understanding unsteady flows like roll waves.
The HydroGym platform uses reinforcement learning to train AI agents for actively controlling fluid flows, reducing drag and friction by up to 65%. The platform enables the systematic study of complex flows and improves the efficiency of airplanes, wind turbines, and other applications.
Kinetic simulations distinguish collective from diffusive charge and heat transport in a graphene Corbino disk, revealing magnetic-field-induced deflection of charge and heat flux. The hydrodynamic regime shows a substantially larger temperature rise under electric-field driving, associated with reduced momentum relaxation.
Researchers have developed a soft, custom-molded acoustic contact lens that actively corrects outgoing sound waves before they pass through an autonomous drone's protective shell. The lens boosts sonar signal strength by up to 10 decibels while cutting background reverberation without draining extra battery power.
Southwest Research Institute has patented EZ Flow technology, which reduces the viscosity of heavy crude oil by 40-60%, making it easier and less expensive to transport. The two-part process uses a proprietary chemical additive and controlled hydrodynamic cavitation to reduce viscosity without changing the oil's composition.
New simulations reveal that neutrino fast flavor conversion affects core-collapse supernovae explosion mechanism, with impact depending on progenitor mass. The findings highlight the importance of accurate neutrino transport and provide a robust argument for FFC's role in CCSNe.
A new study introduces a physics-guided mixture density network that improves real-time hydrodynamic forecasting in canal systems. The model reduces mean absolute error and root mean square error by over 25%, offering a more reliable tool for managing large-scale water diversion infrastructure.
A team of researchers from The University of Osaka used supercomputer simulations to study how vortices generated by dolphin kicks power fast swimming. They found that large, powerful vortices created by the movement of the dolphin's tail are responsible for most of the propulsion, while smaller ones contribute little to forward motion.
Researchers from The University of Osaka developed a novel device to harness wave power, achieving high energy absorption efficiency across broadband frequencies. By tuning gyroscopic parameters, the device can maximize performance, providing a roadmap for developing adaptable and efficient wave energy converters.
EPFL researchers have theoretically shown that heat can flow toward warmer regions in highly ordered materials, enabling the design of electronics with minimized heat loss. This breakthrough could lead to more efficient thermal management across multiple sectors, from consumer electronics to energy storage and data centers.
Researchers identified two fundamental coordination patterns in underwater dolphin kick, accounting for over 99% of movement across performance levels. Faster swimmers exhibited greater shoulder extension and increased lower trunk movement, enabling reduced water resistance and improved propulsion.
A team of researchers uncovered a surprising physical mechanism explaining how isolated filaments form knots in fluids under strong gravitational forces. The discovery provides insight into polymer dynamics, with implications for understanding DNA behavior, designing soft materials, and nanomaterials fabrication.
Researchers at OIST develop world-class 'hurricane-in-a-lab' setup to study turbulent Taylor-Couette flows. By re-examining Kolmogorov's framework, they find that the power law predicts universal behavior across all small-scale flows, resolving a long-standing inconsistency.
The scientific program features nearly 300 sessions and thousands of presentations on various fluid dynamics topics. The conference will also include a visual arts competition, Gallery of Fluid Motion, with a traveling exhibit on display until January 2026.
University of Queensland researchers have developed a microscopic 'ocean' on a silicon chip, allowing for the study of wave dynamics at an unprecedented scale. The device, made with superfluid helium, enables the observation of striking phenomena, including waves that lean backward and shock fronts.
Thousands of scientists will gather to present new research on fluids at the 78th American Physical Society meeting. The conference features a scientific program with thousands of presentations on various fluid dynamics topics.
A recent study suggests that a near-collision between two protoplanets of similar masses could have formed Mercury, contradicting the widely accepted theory. The researchers used smoothed particle hydrodynamics to simulate this event and found that it can reproduce Mercury's composition with high precision.
Researchers are investigating whether boobies create a protective 'bubbly barrier' to reduce the impact of their high-speed dives. Preliminary findings suggest that supercavitation may indeed help mitigate the forces of impact, and further experiments are planned to confirm this effect.
A study from the Marine Biological Laboratory proposes that physical forces, such as fluid dynamics, played a key role in the evolution of multicellular life. The researchers found that cooperative feeding among Stentor cells increased the flow rate of water into their mouths, allowing them to capture more prey. However, the benefits o...
Researchers from the University of Warsaw have shown that Navier-Stokes equations can be generalized to quantum systems, specifically quantum liquids with restricted particle motion. This discovery opens up new possibilities for research into transport in one-dimensional quantum systems.
Scientists at University of Tsukuba have discovered the first evidence of precession in ultraluminous accretion disks due to a black hole's spin. This phenomenon causes periodic fluctuations in luminosity and affects the direction of emitted radiation, shedding light on the influence of BH spin on cosmic phenomena.
Roman Gaydukov developed a method to model fluid flow around rotating disks with small surface irregularities, reducing computational time and cost. The approach can accurately predict fluid flow behavior in chemical reactions and has potential applications in industry.
A team of Lehigh University researchers led by Professor Muhannad Suleiman is working to develop floating offshore wind platforms that can harness both wind and wave energy. The goal is to create more efficient and resilient structures that can withstand extreme weather conditions.
The study reveals a way to extend the Lorentz reciprocal theorem to systems with broken symmetries, enabling analytical calculations for fluids and self-propelled microorganisms. This generalization opens up new avenues for exploring systems with odd viscosities.
Researchers at Ohio State University have developed a new framework for studying neutrino self-interactions using supernovae. They found that in the burst case, unprecedented sensitivity to neutrino self-interactions is possible even with sparse data from SN 1987A and conservative analysis assumptions.
The study of fluid dynamics involved in forming horizontal air cavities and the transition between floating and skipping, reveals complex interactions at the air-water interface. The pulling angle plays a significant role in shaping hydrodynamics, with larger angles resulting in different air-cavity lengths and skipping distances.
A team of researchers from the University of Chinese Academy of Sciences developed a hydrodynamic model to study penguin wings' propulsion physics. The model reveals that wing feathering is the main factor in generating thrust, allowing penguins to swim efficiently and maneuver swiftly.
A Brazilian study combined urban expansion and land-use changes with hydrodynamic models to identify flood-prone areas of cities. The methodology, validated using actual data for São Caetano do Sul, can be used by other cities to devise public policies and make decisions to address flooding impacts.
New experiments with ultra-cold atomic gases show that quantum systems composed of many particles change over time following a sudden energy influx. The findings reveal a universality in the behavior of these systems, shedding light on how they evolve and interact.
Researchers study DNA minicircles using hydrodynamic measurements to understand their behavior under twisting, revealing unique shapes and compactness. The investigation combines theoretical approaches with experimental methods to elucidate dynamic hydroelastic effects in DNA.
Theoretical calculations accurately describe data from ATLAS experiment collisions of photons with lead nuclei, revealing a strongly interacting fluid that exhibits hydrodynamic behavior. This finding supports the creation of quark-gluon plasma in photon-heavy ion collisions.
Researchers at Northwestern University have discovered a surprising way to trap microparticles using the combined effects of electrostatics, hydrodynamics, and random Brownian motion. This phenomenon enables the capture of particles in complex environments, such as winding channels, and could revolutionize microfluidic applications and...
Researchers at IBS CSLM discovered pair quasiparticles in a classical system of microparticles driven by viscous flow. These long-lived excitations exhibit anti-Newtonian forces that stabilize pairs, similar to the behavior of Dirac quasiparticles in graphene.
A team of researchers from The University of Tokyo created a computer simulation to study the phase separation of counter-rotating particles in a fluid. They found that nonlinear turbulent effects lead to the sudden separation of particles into regions of clockwise and counterclockwise collections.
Researchers discovered that cold-water coral reefs optimize their growth in response to ocean currents, capturing organic matter and resources. This self-organization allows them to thrive in deep environments, serving as architects of ecosystems and habitats for diverse species.
Theoretical calculations and experimental data from the ATLAS detector suggest that photons can create a fluid of strongly interacting particles in collisions with heavy ions. This is supported by observations of particle flow patterns similar to those seen in lead-lead and proton-lead collisions.
By incorporating hydrodynamics into their models, the researchers improved predictions of final structures compared to conventional computational models. This work may lead to the development of smart materials with controllable properties in response to external conditions.
Researchers at Georgia Tech discovered that wingless springtails control their jump, self-right in midair, and land on their feet due to their unique appendages for jumping and adhesion. This unique posture creates aerodynamic torque, effectively self-righting them within 20 milliseconds.
Geoscientists at the University of Sydney have created a method to assess the health of coral reefs from space by analyzing sand aprons. The research reveals that sand aprons can be used to predict carbonate sediment productivity, with significant declines detected in recent years, indicating potential effects of climate change.
Scientists develop a new model to predict when a droplet will splash upon hitting a solid surface, considering factors like wettability and roughness. The study could enable advances in agriculture, epidemiology, and printing technology.
Researchers used Stampede2 supercomputer to simulate star seeding, heating effects of primordial black holes. The study found that these two effects cancel each other out, with little impact on star formation.
A team of researchers from Cornell University has developed a deformable pump for soft robots, mimicking the human heart's functionality. The pump uses hydrodynamic and magnetic forces to provide soft robots with a circulatory system, allowing them to store energy and power their movements more efficiently.
Researchers recreated ancient ammonite movement using robotic models, exploring trade-offs between stability and maneuverability. The study found that different shell shapes offered varying advantages and consequences, with no single perfect design.
Researchers have observed two resonances of first and second sound in a three-dimensional quantum gas, defying classical expectations. The system's compressibility and microscopic description offer new insights into quantum hydrodynamics.
Researchers at Chalmers University of Technology have developed a method to make shipping industry significantly greener by using hydrofoils to reduce water resistance. The new technology can increase the range of electric vessels and reduce fuel consumption by up to 80%.
Researchers at Argonne National Laboratory discovered how microparticles can change direction when an electric stimulus is interrupted and reapplied with the same orientation. This emergent behavior has potential applications in microfluidic pumps for biomedical, chemical, and electronics applications.
Researchers propose that water molecules interact with electrons in the nanotube walls, slowing down flow. Theoretical findings could significantly impact proposed carbon nanotube applications, such as filtering salt from seawater or generating energy.
This book provides a fundamental understanding of the physical, biological, and chemical processes governing fine sediment transport in open water. It covers various spatial and temporal scales, from micro-scale to system-wide, and discusses interactions between disciplines such as hydrodynamics and soft soil mechanics.
Fish schools operate like superorganisms, with individual fish optimized for maximum surveillance and energy efficiency. Researchers discovered a 'perfect efficiency curve' in tail beats, allowing schools to conserve energy while monitoring their surroundings.
A new study quantifies landscape changes on barrier islands, revealing that storms can create habitat for coastal species. The research found varying impacts from two hurricanes, Irene and Sandy, which reshaped Pea Island National Wildlife Refuge.
A team of researchers from Harvard, MIT, and the Max Planck Institute developed a theory to explain how hydrodynamic electron flow could occur in 3D materials. They observed it for the first time using a new imaging technique, providing evidence of strong interactions between electrons in high-density materials.
Physicists developed an electrical technique to study the Leidenfrost effect, revealing the temperature at which vapor layers form and collapse. The results show that stable vapor layers can be sustained at 240 degrees Celsius, with a minimum heat of 140 degrees Celsius required for their existence.
Researchers found that the protruding eyes and mouth of stingrays increase negative pressure and pressure difference, leading to increased thrust and propulsion efficiency. The study reveals design principles for next-generation aquatic vehicles.
Researchers have found exotic topological features in soft matter, a discovery that challenges our understanding of physics. The study reveals that such features are widespread and can be observed in everyday environments, including living organisms.
Researchers simulated the hydrodynamic behavior of deep-sea Venus flower sponge E. aspergillum, revealing its skeletal adaptations optimize flow physics within and beyond its body cavity. The findings improve understanding of mechanical and biological responses to dynamic forces.
A collaboration has created a first-ever simulation of the deep-sea Venus basket sponge, revealing its ability to withstand dynamic forces and create nutrient-rich vortex within its body cavity. The structure of the sponge is optimized for fluid flow, reducing drag and facilitating feeding and reproduction.
A study using San Francisco Bay models found that protective coastal structures can exacerbate flooding along other parts of the shoreline. The analysis estimated significant regional increases in economic damage, up to $723 million, under certain sea-level rise scenarios.
A new algorithm allows solving applied problems like electrodynamics and hydrodynamics with a significant time gain of up to 50%. The method uses asynchronous processes and non-overlapping subdomains, providing accurate results with less computation time.
Experts identified three hydrodynamics units - Balearic Sea, West Algerian Basin, and Alboran Sea - with minimal fish exchange. The study highlights the importance of connectivity in marine reserve setting.