Fluid Dynamics Shows Why You Should Wear Masks Outdoors To Prevent Coronavirus Exposure
Wind blowing in the same direction as a cough can increase viral transmission. As the highly infectious delta variant of the coronavirus continues to spread…
Fluid Mechanics
Unified Physics Theory Explains How Materials Transform From Solids to Liquids
Years of meticulous experimentation have paid off for researchers aiming to unify the physics that defines materials that transition from solids to liquids. The researchers…
Droplets Loaded With Coronaviruses Last Far Longer Than Previously Thought
Experiments with dummy heads and masks. Credit: TU Wien Tiny droplets loaded with viruses disappear more slowly after exhalation than previous models suggested. Experiments and…
COVID Aerosol Filtration: Nanofiber Face Masks Improve Efficiency, Need Replacing More Often
Videos capture nanofiber behavior under water aerosol exposure. Since its outbreak, the COVID-19 virus has infected more than 220.9 million people worldwide and has claimed…
Injecting Drugs Without Needles: High-Speed Camera Captures a Water Jet’s Splashy Impact As It Pierces a Droplet
The results may help engineers develop a way to inject drugs without needles. Squirting a jet of water through a drop of liquid may sound…
Dangerous Oscillations in Rocket Engines Driven by Fuel Flow and Heat Fluctuations
Power source clusters near rocket engine fuel injectors could create combustion oscillations. Combustion engines can develop high-frequency oscillations, leading to structural damage to the engines…
Solving The Mystery of the Pointy Droplets
A certain type of oil droplets changes shape when cooled and shrunk: from spherical through icosahedral to flat hexagonal. Two competing theories couldn’t fully explain…
Smashing the COVID Curve: Little Differences in Behavior Decide Between Success and Complete Failure
Scientists at IST Austria show that little differences in behavior decide between success and complete failure of epidemic control. What has fluid physics to do…
Researchers Find Leakage of Airborne Droplets Escaping From COVID Masks – Even When Just Breathing
Curbing coronavirus spread in enclosed spaces means better masks, adequate ventilation. With research increasingly showing the COVID-19 virus is transmissible via smaller droplets suspended in…
Blood Forensics Puzzle Cracked via Fluid Mechanical Principles
How can clothing of a close-range shooter remain free of bloodstains? In 2009, music producer Phil Spector was convicted for the 2003 murder of actress…
Scientists in Japan Discover Key to Coronavirus Transmission: Triangular-Shaped Spikes
COVID-19 needs no introduction. Last year, the disease, which is caused by the virus SARS-CoV-2, reached every continent across the globe. By the end of…
Researchers Visualize the Motion of Vortices in Quantum Superfluid Turbulence
Nobel laureate in physics Richard Feynman once described turbulence as “the most important unsolved problem of classical physics.” Understanding turbulence in classical fluids like water…
New Research Shows Masks and Ventilation Stop COVID Spread Better Than Social Distancing
The results indicate masks and proper ventilation may be key to allowing more capacity in schools, businesses, and other indoor areas. A new study from…
Physics Mystery Behind “Coffee Ring” Formation Uncovered
An international research team, led by Monash University, has discovered for the first time the mystery behind the formation of ‘coffee rings’ by examining the…
Complex Fluid Dynamics May Explain Hydroplaning Phenomenon
Tiny fluorescent particles, laser light used to study water flowing through tire grooves. When a vehicle travels over a wet or flooded road, water builds…
See How Strategic Air Purifier Placement Reduces COVID Virus Spread Within Music Classrooms
Aerosol simulations show how airborne particles containing SARS-CoV-2 spread within a music classroom and how to use portable HEPA air purifiers to reduce their spread….
Simply Talking While Infected Can Spread COVID-19 – Even While Wearing Masks
Airflow patterns around two people conversing in typical situations, such as hair salons, medical exam rooms, and long-term care facilities. COVID-19 can spread from asymptomatic…
Advanced Simulations Reveal How Air Conditioning Spreads COVID-19 Aerosols Through Restaurants
More preventive measures, such as shielding underneath tables and improving air conditioner filtration efficiency, could reduce exposure to COVID-19 within air-conditioned restaurants. The detailed physical…