1
$\begingroup$

I know that when you walk through the air you form a wake vortex and turbulent air behind and the vortex grows the faster you walk. When I walk past people I almost feel wind that's behind them. So why do I feel wind behind a person when they walk by? Is it the turbulence causing the wind?

$\endgroup$
1
  • 2
    $\begingroup$ Which question are you asking: "why do we feel moving air" or "how does a walking person cause air to move, which I consequently feel"? $\endgroup$
    – Bill N
    Oct 16 '17 at 15:28
1
$\begingroup$

In practice, yes, but you wouldn't even need that: the simple fact that an obstacle pass through the air makes it push apart in front then sucked together on the rear, causing motion on the sides. But such viscous flow displacement would exist only close to the object, while wakes can be very long (see for instance behind cars, when there is some smoke or fog around).

$\endgroup$
1
$\begingroup$

but aren't you answering the question on your own? when a person moves forward the air behind them rushes in to fill the gap. simple high -> low pressure situation. the air moving in causes you to feel the "wind"

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.