Articles tagged with Fluid Dynamics
Researchers at OIST and University of Turin developed a general formulation for mixing heavy particles with fluid, enabling study of fundamental physics phenomena and applied research in fluid engineering. Simulations reveal the formation of sediment plumes and the role of friction in particle interactions.
Researchers at IBEC have developed a compact, cost-effective NMR platform capable of direct observation of dynamic metabolic fluxes in microfluidic systems. This technology leverages hyperpolarization to bridge the gap between high-field NMR performance and lab-on-chip analysis.
A team of researchers developed a computational model to study how pollen disperses in urban areas, influenced by factors such as tree geometry, wind speed, and direction. The model provides quantitative insight to inform urban planning decisions and reduce the risks associated with airborne allergenic pollen exposure.
Researchers developed a model to calculate snow accumulation on roofs, considering snowflake size and distribution. Larger snow particles lead to greater accumulation, while higher wind speeds reduce depth. The study provides insights for building codes and guidelines for snow loading.
Researchers found that low-viscosity liquids like milk take around 30 seconds to drain 90% of a thin film, while more viscous fluids like olive oil require over nine minutes. The study provides insight into everyday physics and its applications in the kitchen.
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.
Researchers used the Frontier supercomputer to perform a record-breaking direct numerical simulation of turbulence in three dimensions, achieving a resolution of 35 trillion grid points. The study offers new insights into turbulent fluid flows, which govern various natural and engineered phenomena.
A recent NSF grant will support the development of new diagnostics and predictive models for understanding self-competition and weak asymmetry in turbulent flows. The project aims to uncover hidden patterns that current models miss, leading to improved simulations in weather forecasting, climate modeling, and engineering design.
Researchers discovered that only observing the flow down to a specific scale is enough to reconstruct the full motion of fluid in two-dimensional turbulence, unlike three-dimensional systems. This finding has significant implications for modeling and prediction in atmospheric and ocean circulation.
Researchers develop a probabilistic framework to predict turbulence onset in flow systems, enabling better forecasting of extreme weather events and understanding climate tipping points. This approach has potential implications for atmospheric science, aviation, and meteorology.
Physicists at MIT observed clear signs that quarks create wakes as they speed through the plasma, confirming the plasma behaves like a liquid. This finding provides new insights into the properties of the quark-gluon plasma and its behavior in the early universe.
The RT-FLOW project aims to transform aerodynamic experiments with compact, cost-effective hardware and real-time flow field measurements. It will define requirements for a fast visualization platform and tackle challenges in data-driven spatial resolution enhancement.
Direct-ink writing (DIW) technology faces unique physics puzzles, requiring a balance between liquid-like and solid-like behavior. The review aims to stimulate fundamental work on the central challenges of DIW, enabling more reliable and precise processes.
Scientists from Tokyo Metropolitan University have re-engineered the Lattice-Boltzmann Method to store certain data, reducing memory usage and overcoming a key bottleneck. The new algorithm achieves significant accuracy and stability in simulations of fluids and heat.
Researchers developed a reduced order model that accelerates calculations by identifying key features in flow data, enabling faster testing of geometry parameters for efficiency gains. The team plans to make their extensive database and model available online for other research groups.
Researchers at Waseda University have demonstrated a transformative approach for realizing skyrmion logic based on fluidic principles, utilizing the flow behavior of many skyrmions to simplify device operations. This breakthrough enables the development of nanofluidic logic gates with reduced complexity and improved stability.
A new physics-based approach predicts how lightning strikes aircraft, identifying vulnerable regions for protection. The tool can be applied to any shape of aircraft, including unconventional designs.
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.
Computational models now accurately represent very weak shock waves, which are crucial in flows involving shock waves. The final state of a moving shock wave can be classified into three regimes: dissipated, transitional and thinly captured.
Researchers from Poland, USA, and Slovenia found a mathematical description of stalagmite shapes, revealing that shape matters for climate science. The study provides an analytical solution for the growth of ideal stalagmites in constant cave conditions.
The University of Gothenburg will acquire a new AUV, named Ran II, with improved navigation and emergency response systems. The new vessel will enable researchers to gather unique data on glacier melting and ice dynamics in the Baltic Sea and Antarctica.
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.
Scientists at MIT developed a method to predict how plasma in a tokamak will behave during rampdown, achieving high accuracy with limited data. This new model could significantly improve the safety and reliability of future fusion power plants.
A new study reveals that small electric charges between particles play a crucial role in forming highly concentrated clusters in turbulent environments. This discovery has significant implications for climate research, medicine, engineering, and science, enabling better predictions and controls.
UC San Diego researchers Guru K. Jayasingh and Nigel Goldenfeld have predicted that a pipe's curvature can lead to a discontinuous turbulent transition beyond a critical flow velocity. This phenomenon is mathematically equivalent to the freezing of water, leveraging tricritical directed percolation theory.
Researchers at Pohang University of Science & Technology have successfully synthesized Prussian Blue with an octahedral morphology by using a specialized solvent. The new crystal shape enhances electrochemical reactivity and stable performance in sodium-ion hybrid capacitors.
Tayfun Tezduyar's space-time computational flow analysis enables accurate modeling of complex systems, from designing parachutes for astronauts to simulating blood flow through heart valves. The approach provides high-fidelity representations in both space and time, allowing for more realistic solutions.
Researchers uncover how cerebrospinal fluid dynamics drive tumour spread, identifying a way to target this process to inhibit metastasis. The study provides new insights into the role of fluid shear stress in shaping cancer behaviour and offers a promising therapeutic approach for medulloblastoma.
A new study led by Professor Jonghun Kam predicts that Pakistan will experience major floods and severe droughts on a periodic basis, exacerbated by accelerating global warming. The AI model forecasts these extreme weather events every 15 years for the upper Indus River, and roughly every 11 years for surrounding rivers.
Researchers at Max Planck Institute develop protocols for optimal mixing in cellular and microfluidic systems, overcoming energetic and fluid motion limitations. Their findings reveal a fundamental limit on information erasure efficiency, providing a theoretical framework for efficient engineering designs.
Researchers at OIST have found that two types of turbulence coexist in everyday fluids like shampoos and ketchup, shifting from inertial to elastic turbulence at the smallest scales. This discovery bridges two branches of turbulence research and has potential implications for industries relying on polymers.
A team of researchers has confirmed Kolmogorov scaling in bubble-induced turbulence, revealing the fundamental rules of chaotic flows in fluids. The study provides new insights into the behavior of turbulent fluid motion and its applications in industrial designs, climate models, and more.
A team of researchers led by undergraduate physics majors at UMass Amherst modeled how aerosol plumes spread when people are waiting and walking in a line. They found that warm air rises, causing the plumes to sink, but temperatures can affect their height. The study sharpens our understanding of airborne-communicable diseases travel.
Bioengineers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a computational model called BrainFlow that simulates cerebrospinal fluid flow in the presence of shunt implants, providing insight into optimal shunt design and placement for hydrocephalus patients.
Researchers at New York University have discovered that water rings can rebound when they reach a water-air interface, maintaining their shape in the process. The study reveals four possible outcomes for vortex rings when interacting with air, including dissipation and breakup.
Researchers at New York University and University of Michigan have developed a detailed characterization of sail behavior during tacking maneuvers. This framework has potential applications in designing more efficient autonomous sailboats, particularly in oceanographic research.
Scientists at Rice University developed a scalable approach to engineer bacterial cellulose into high-strength, multifunctional materials. The dynamic biosynthesis technique aligns bacterial cellulose fibers in real-time, resulting in robust biopolymer sheets with exceptional mechanical properties.
Southwest Research Institute (SwRI) is expanding its heat exchanger testing capabilities to include megawatt-scale performance evaluations. This move addresses a significant market gap for high-heat transfer rates involving high-temperature and -flowrate applications in data centers, defense, and other fields.
Research shows that island rivers shape reef passes, allowing seawater and nutrients to flow in and out. The locations of reef passes align with where rivers funnel out from an island's coast, providing circulation throughout the reef.
FAMU-FSU College of Engineering researchers have discovered a fundamental universal principle governing the behavior of microscopic whirlpools in quantum fluids, which also has implications for understanding turbulent flows in classical physics. The study reveals that when these quantum vortices intersect and reconnect, they separate f...
A study by Göttingen University researchers combined satellite data with manual measurements to better understand forest soil moisture. The findings show that soil moisture is strongly influenced by weather and season, not exact location, and highlight the importance of monitoring soil moisture over time for effective forest management.
LyoWave, a company commercializing microwave heating technologies developed at Purdue University, has received a $304k NSF SBIR grant to scale its tech for pharmaceutical and biologics manufacturing. The project aims to increase manufacturing throughput and reduce costs.
A team of scientists from the University of Warsaw discovered that karstic solution pipes preserve a record of Earth's climatic history. The pipes evolve into an invariant shape as they deepen, encoding ancient rainfall patterns.
Researchers suggest that an ancient, weak magnetic field and a large plasma-generating impact combined to create a strong magnetic field on the moon. This process could explain the presence of highly magnetic rocks near the south pole's far side, where the Imbrium basin is located.
Researchers have developed a technique to create spin in liquid droplets using ultrasound waves, concentrating solid particles suspended in the liquid. This allows for the creation of novel technologies for biomedical applications and research on rotating systems.
A team of scientists simulated the movement of microorganisms in liquids without a central control system. They found that simple rules and decentralized control can lead to efficient swimming behavior, potentially enabling nanobots to transport drugs or perform other complex tasks.
Researchers developed a spherical prototype with adjustable surface dimples to cut through pressure drag and generate lift, reducing drag by 50% compared to smooth counterparts. The adaptive skin setup can adjust dimple depth to maintain drag reductions and generate controlled movement.
Researchers discovered that butterflies use body pitch to generate aerodynamic forces and sustain hovering flight. By adjusting their body angle, they counteract gravity and achieve stable flight. This finding could revolutionize the design of stealthy MAVs with low structural demands.
Researchers create CARL-Bot to ride vortex rings and navigate turbulent ocean currents without fighting them, inspired by nature's ability to conserve energy. The system uses a single accelerometer and simple control laws to achieve energy-efficient propulsion, opening doors for future applications in ocean exploration and monitoring.
A study by Northwestern Polytechnical University and the Ningbo Institute modeled manta ray group dynamics to understand their propulsion. The researchers found that tandem formation significantly improves middle manta ray's performance but two triangular setups decrease overall efficiency compared to a single swimmer.
Researchers from The University of Tokyo developed a novel water-cooling system with three-dimensional microfluidic channel structures to enhance heat transfer. The new design achieved a significant increase in performance, reaching up to 10^5 COP, surpassing conventional cooling techniques.
A team of physicists at the University of Pennsylvania has discovered that pouring water from a height creates a stronger mixing effect, increasing extraction efficiency in pour-over coffee. By optimizing flow rates and pour heights, they found that more coffee grounds can be used without diminishing overall quality.
Kyushu University researchers have successfully recreated the fluid dynamics of flowing biological cells using numerical simulations. The study reveals that capsule position depends on deformation and pulsation frequency, enabling precise cell manipulation in research and potential applications in artificial heart development.
Researchers optimized pour-over coffee brewing by maximizing pour height and laminar flow, resulting in stronger coffee with fewer beans. The study suggests using thick water jets, like those from standard gooseneck kettles, to achieve optimal mixing between water and grounds.
A new study from York University combines fluid mechanics and chemistry to understand the Earth's early evolution. Researchers found that the lower mantle's structure was established four billion years ago, with most crystals forming at low pressure, leading to a different chemical signature than previously thought.
A collaborative research effort has provided new insights into the likelihood of mpox spreading by airborne respiratory particles, comparing it to SARS-CoV-2 and smallpox. The study suggests that future viral evolution could alter this dynamic, underscoring the need for continued surveillance.
Researchers found that collective cell movement exhibits robust invariance across diverse systems, including cancer cells and bacteria. This discovery could lead to improved understanding of oncological diseases and tissue engineering, as well as applications in robot navigation and artificial intelligence.
Researchers have discovered a family of genes essential for tuberculosis survival during airborne transmission, providing new drug targets. The study sheds light on the bacterium's protective mechanisms, which could prevent infection spread and treat existing cases.
Researchers have developed a new technique for quantum sensing using nanodiamonds in microdroplets, which can detect trace amounts of certain ions and molecules. This method uses flowing droplets and carefully modulated microwaves to ignore unwanted background noise and add precision.