Supporting Fluid: Reducing Shear Stress with Wall

[werson tan]

Homework Statement

why the fluid need the wall to eliminate the shear stress?

Homework Equations

The Attempt at a Solution

is it because if there is no wall to support the fluid , the fluid would move continously , resulting the shear stress act on water?

 

[Chestermiller]

Here again, your question (and the accompanying diagram) does not make sense to me. Where did this diagram and caption come from?

 

[werson tan]

Here again, your question (and the accompanying diagram) does not make sense to me. Where did this diagram and caption come from?

i am asking about , if no wall is present , how can it not eliminate stress?