What speed is needed to create a vacuum?

[Cyber_VERGIL]

What speed is needed to create a vacuum? I have a character whose body is spherical and when he starts spinning around his axis at great speed, air within a radius of 120 meters begins to be sucked into him, attracting everyone around (including the main character) into him. As I noticed, a vacuum space is formed around this character. I could use for the KE a speed equal to the speed to create a vacuum, but I need to know what speed is needed for this. It says here that it's from 500 meters per second to 2 kilometers per second, but I think that's too much.

 

[AzuRizzz]

Infinite

 

[Suigetsuhyugs]

Its not that special a vacuum is air trying to fill a place that is "empty", vacuum is easily made anywhere you see them likely everyday when you open a bottle for the first time there is a vacuum there that is filled once you open it.
Anything higher than the speed of sound would already be enough to cause a vacuum faster than the air can fill it.

 

[Myguy]

Speed of sound

 

[TheAngryOrange]

I think you should show the panel/scene for reference.
Cuz here's my issue. Tornadoes create wind that suck everything in and tornadoes are not vacuums. Or if you put a stick into water and spin it, it'll create a whirlpool of sorts that will also pull things in

That being said, this line of thinking will likely net a higher speed than a vacuum could. Air is very compressible so it's hard for any sort of movement to create anything more than a gentle breeze. Look not further than supersonic and hyperonic jets and bullets whose winds can at best blow some hats away a few meters out let alone affect humans at hundreds of meters.

 

[Shmeatywerbenmanjenson]

What speed is needed to create a vacuum? I have a character whose body is spherical and when he starts spinning around his axis at great speed, air within a radius of 120 meters begins to be sucked into him, attracting everyone around (including the main character) into him. As I noticed, a vacuum space is formed around this character. I could use for the KE a speed equal to the speed to create a vacuum, but I need to know what speed is needed for this. It says here that it's from 500 meters per second to 2 kilometers per second, but I think that's too much.

I really don't think there's a formula that exist that can be used to calculate this

The best I could see is using the PE of all air in a 120m sphere

And if it has a stated spinning speed you could add KE to that