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Author Topic: How do air bubbles in a sphere of floating liquid work in space  (Read 1446 times)

Offline Fluid_thinker

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Once in space, water will take it natural most econonic shape of a sphere.

if this was for instanced a gaseous carbonated water, how do the bubbles react?

Do they migrate to the edge of the sphere in all directions?

Do they hang static in the bubble?

Do they aggregate into one inner bubble?



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Spherical bubbles, I guess, which would gradually coalesc and migrate outwards - away from Earth. Remember, there is a gradient of  'effective' gravitational field in an orbiting spacecraft. Greater on the earthside and less on the far side. (Hence 'microgravity' is the the term used)

What about drinking fizzy drinks up there?
Burping would just produce a foam because the gas wouldn't congregate at the top of your stomach as it does on Earth. Very unsatisfactory.

Offline LeeE

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Even in a small sphere of water, the pressure would be slightly greater at the center than at the boundary, so I would think that the bubbles would move outwards, coalescing as they go.

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