Minnaert resonance
Alright, so imagine you're on a swing set, and you're swinging back and forth. You're having fun, right? Now, if you push yourself a little in sync with the swing's motion, you can go higher and higher with each push.
Now, let's switch the swing set for a whole bunch of columns or trees in a row, like in a field. And instead of yourself on a swing, imagine the wind is blowing really strong. Just like you pushing yourself on the swing, the wind can push on these columns or trees in a certain way too.
When the wind blows, it creates pressure waves in the air. These waves can go up and down in a pattern called "resonance." Think of these waves like little pushes from the wind. And just like the push on the swing makes you go higher, these waves can make the columns or trees vibrate too.
Now, imagine that there's something blocking the wind's path, like a big hill or a building. The wind has to go around and over this obstacle. When it does that, it creates an area where the wind is moving slower and faster alternately. This change in speed also makes the wind push on the columns or trees in a special way.
Here's where the Minnaert resonance comes in. The Minnaert resonance is a name for when the columns or trees vibrate in a certain way because of this wind moving slower and faster. It's like the wind is pushing them at just the right time to make them vibrate even more.
These vibrations can make a sound too. So, when the wind blows through these columns or trees, you may hear a humming or a whistling sound because of the Minnaert resonance.
Scientists study all of this to understand how air moves and how it affects different objects like buildings or other structures. It helps them know how to design things better so that they don't make too much noise or get damaged by the wind.
Now, let's switch the swing set for a whole bunch of columns or trees in a row, like in a field. And instead of yourself on a swing, imagine the wind is blowing really strong. Just like you pushing yourself on the swing, the wind can push on these columns or trees in a certain way too.
When the wind blows, it creates pressure waves in the air. These waves can go up and down in a pattern called "resonance." Think of these waves like little pushes from the wind. And just like the push on the swing makes you go higher, these waves can make the columns or trees vibrate too.
Now, imagine that there's something blocking the wind's path, like a big hill or a building. The wind has to go around and over this obstacle. When it does that, it creates an area where the wind is moving slower and faster alternately. This change in speed also makes the wind push on the columns or trees in a special way.
Here's where the Minnaert resonance comes in. The Minnaert resonance is a name for when the columns or trees vibrate in a certain way because of this wind moving slower and faster. It's like the wind is pushing them at just the right time to make them vibrate even more.
These vibrations can make a sound too. So, when the wind blows through these columns or trees, you may hear a humming or a whistling sound because of the Minnaert resonance.
Scientists study all of this to understand how air moves and how it affects different objects like buildings or other structures. It helps them know how to design things better so that they don't make too much noise or get damaged by the wind.