As the National Weather Service explains, the polar vortex is an area of low pressure and cold air that exists over both of ...

Vortex streets occur in liquids as well as gases. As fluids move toward a cylinder that is sticking up into the prevailing flow, that flow will split around the cylinder. The edge of the fluid ...

The term “polar vortex” might conjure images of mythical icy storms swirling through the North Pole but in reality it’s a crucial component of our ... Read more The post What Causes the “Polar Vortex” ...

After Feb dumped a wave of unconditionally severe winter weather in the US, March is about to unleash those conditions again due to the polar vortex collapse.

Scientists say it’s being caused by a misbehaving polar vortex combining with a key weather ... the river of air over the US that storms flow through –— that also separates cold air from ...

The polar vortex disruption will cause Arctic air to flow south into North America. However, it's not yet clear how severe its impact will be. With the warmer temperatures of spring approaching ...

These experiments examines the flow field in the region where a moving wall slides ... The transitional regime of vortex development is marked by the appearance of an instability on the perimeter of ...

At the centre of the vortex the fluid flow is well defined — it is either clockwise or anticlockwise — but in the outer region, the direction is less obvious, leaving the orientation of the ...