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Jan-Olov Newborg
 
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Default how a sail works, who can help me explain?

"Simple Simon" wrote in message ...
"Jan-Olov Newborg" wrote in message

High airflow velocity can never create low pressure!

Thats only a mathematical manipulation!


Tell that to all the tornado victims who have seen the
structure they were in explode from greater pressure
inside than outside because of winds up to 200mph
or greater creating sever low pressure.

But Dear Simple Simon, do you not even understand how a tornado works?


First you need a big CB, to get the updraft. When the the horisontal
circulation starts, itīs centrifugal/centripetal forces causing the
lower pressure to form.

Of cause, the house explodes if an airstream at 200 mph gets turned
around the house!

There will be very big low pressure gradients around the house!

That physics is very simple to understand even for Simple Simon, if
he just forget Leonard Eulers 1 D equation for a perfect, physically
non existing fluid, namely the so called "Bernoulli equation"!

Have you ever felt that it is the speed of the car that gives you the
power in the engine just as the "Bernoulli Effect" should give the
sail a force?



Jan-Olov Newborg