Quote:
Originally Posted by aerohead
Yeah,this is exactly what Hucho and others warn us about.All that kinetic energy is forever lost to atmospheric heating.Literally!The vortices could be the poster child for the 2nd Law of Thermodynamics!
This is also why it's very hard to discern these sorts of things without a smoke-generator.Tufts just don't reveal all that's needed.  |
These vortices are also easy to see in your rear view mirror when you are driving in a light snow shower on a windless day. My 68 VW Beetle used to develop such large vortices that it used to sweep the road behind it clear of blowing snow. By contrast, the Aerocivic just displaces the snow upwards a bit as the car passes under it, then sets the snow back down to its original level and the snow keeps on falling behind the car as if the car had never even been there.