Latest news

## Fluid Juggling

It’s that time of the year – the 2013 APS Division of Fluid Dynamics meeting is not far off, and entries to this year’s Gallery of Fluid Motion are starting Keep reading

## Streamlines in Oil

Bernoulli’s principle describes the relationship between pressure and velocity in a fluid: in short, an increase in velocity is accompanied by a drop in pressure and vice versa. This photo Keep reading

## Egg-Spinning Fun

If you have any leftover hard-boiled eggs, you can recreate this bit of fluid dynamical fun. Spin the egg through a puddle of milk, and you’ll find that the egg Keep reading

## Stalling

[original media no longer available] At high angles of attack, the flow around the leading edge of an airfoil can separate from the airfoil, leading to a drastic loss of Keep reading

## Reader Question: Dry Rear Windshields in the Rain

Reader sheepnamedpig asks: I was driving through the rain down the highway when I noticed something strange: though the rain was heavy enough to reduce visibility to a quarter mile, Keep reading

## Magnus Force

Physics students are often taught to ignore the effects of air on a projectile, but such effects are not always negligible. This video features several great examples of the Magnus Keep reading

## The Backward-Facing Step

This photo collage shows vortices shed off a backward-facing step.  The flow is left to right. Here the flow is visualized using dye released in water. Initially, the vortex forms Keep reading

## London 2012: Soccer Aerodynamics

Corner kicks and free kicks are tough to defend in football (soccer for Americans) because the ball’s trajectory can curve in a non-intuitive fashion. Known as the Magnus effect, the Keep reading

## Circulation Around an Airfoil

As a followup to yesterday’s question about ways to explain lift on an airfoil, here’s a video that explains where the circulation around the airfoil comes from and why the Keep reading

## Airplanes Creating Snow

Scientists now think that that airplanes may be responsible for increasing local snowfall by flash-freezing supercooled water vapor in clouds. Water droplets can persist in the atmosphere to temperatures of Keep reading