Apply force along normals of cloth mesh I'm trying to simulate an inflatable mesh by applying a force field to a cloth. As air pressure always acts perpendicular to a surface it might be a close enough approximation when pushing all vertices along their normal vector with equal force.

Blender's shrink/fatten-tool (Alt-S) won't do the trick as it doesn't create the neccessary creases in the mesh when there is excessive material available. Think of a cloth laying on a sphere, where the excessive material gets pushed out and creates these folds and wrinkles. It's kind of similar to the case I'm trying to simulate, but instead of gravity pulling the cloth down on the sphere, thus having little force acting on the horizontal parts of the sphere, the air pressure pushes equally on every surface.

Is there a way to simulate a force field this? I think the weight of the mesh and the air are negligible in my case.

Edit: Example image added.
You could try the modeling cloth addon. It has an inflate option and I've seen a lot of images of people making inflated objects with creases like that.
https://www.youtube.com/watch?v=yHGz7nEI23E
https://github.com/the3dadvantage/Modeling-Cloth