same idea , however ; now we have constant force at the bottom and I want sheer stress profile

tindary-layer thickness is proportional to the square root of the elapsed time. 4.1-2 It is desired to re-solve the preceding illustrative example, but with a fixed wall at a distance b from the moving wall at y = 0. This flow system has a steady-state limit as to whereas the problem in Example 4.1-1 did not minar Two es (4.1-16) SOLUTION As in Example 4.1-1, the equation for the x-component of the velocity is , au, at ay The boundary conditions are now I.C.: att so 0 = 0 for 0 sy sb B.C. 1: V = Vo for all t > 0 B.C. 2: at y = b, for all t> 0 at y = 0, (4.1-17) (4.1-18) (4.1-19) V = 0