Question 1
What is a boundary layer in low-speed fluid flow?
Question 2
Why does the fluid velocity at a solid wall become $0$ in boundary-layer flow?
Question 3
What usually happens to the boundary layer thickness as fluid moves farther downstream along a flat plate?
Question 4
Which physical effect is most directly responsible for the formation of a boundary layer?
Question 5
Inside a boundary layer, how does the fluid speed usually compare with the wall speed and the outer-flow speed?
