Is pressure identical everywhere in a volume ?

neufneufneuf

Hi,

I would like to know if pressure is the same everywhere in any shape ?

Even I use theoretical "perfect" balls (macroscopic study) ?

thanks

clearz

I would presume that it is the same everywhere inside a static volume on a macroscopic scale and a static temperature.

neufneufneuf

It's that I supposed too but when I put balls in the shape like drawings shows, if pressure is the same everywhere, this increase red forces, and increase pressure, and increase red forces, like a loop. NB: I press balls in a perpendicular plan.

clearz

neufneufneuf wrote: »

It's that I supposed too but when I put balls in the shape like drawings shows, if pressure is the same everywhere, this increase red forces, and increase pressure, and increase red forces, like a loop. NB: I press balls in a perpendicular plan.

Did you program that simulation yourself?

neufneufneuf

For me it's logical, but maybe I'm wrong. I wanted to test with magnets (repulsive forces) but it's not exactly the same case, or I think I need to put magnetic field (from electric source) for simulate walls, and if I add external energy, maybe movement will come from this energy. It's better to simulate with mechanical compressible balls. How to simulate with compressible balls ? I can program in C language but compressible ball is very complex (at least for me) to transform into program. To test in reality is very complex too because balls are not perfect. For now, I try to test with FEMM software, and if it's good enough I will test with magnets and electroamgnetism.

Carawaystick

The pressure will not be the same. If it's a volume on earth, gravity will affect the bottom of the volume more than the top, so the pressure will be higher nearer the bottom. Like how pressure is higher at sea level than atop a mountain.

neufneufneuf

Gravity is perpendicular to the screen.

clearz

neufneufneuf wrote: »

Gravity is perpendicular to the screen.

I thought this was meant to be an idealised shape. Gravity was never mentioned therefore the only force acting is the Electromagnetic one between the particles.

DellyBelly

Yes it is

neufneufneuf

Yes, no need gravity but if you imagine the case on Earth, gravity is perpendicular to the screen