Friction in a fluid

when an object is moving in a fluid(air for example), the air will resist the object's movement: molecules of the air will collide with the surface of the object (no slip condition) and then we will have many layers of fluid "above" the surface of the object due to viscosity of the fluid. My question is: are the layers responsible for the friction between the air and the solid or it is just to the molecules that collide at the surface of the object or both?

Answer

Tried to comment on question, need 50 rep. (why??)

I believe what you are referring to is viscosity in laminar flow. If I recall correctly, non-laminar flow is a precondition for turbulence, but I believe you can have viscosity which is not turbulent.

Is this the direction you had in mind?

EDIT:

1. Fluid molecules far away from the object will feel nothing.


2. Fluid molecules in the object's path will be pushed aside (and exert an equal and opposite force on the object).


3. As fluid molecules are pushed aside, they come into interaction with fluid close to the object path, and secondary interactions ensue.

So I think the answer to your question is: Both. Particles not in the object's path affect it indirectly, by causing those molecules directly in its path to escape less quickly. Imagine how the fluid density and molecular mass will affect the situation.