oil (sp. gr. = 0.8) flows smoothly through the circular reducing section shown at 3 ft3 /s. if the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place.

Define shear stress and it’s relation with dVx/dy for a Newtonian fluid

1. Water (p= 1000 kg m-³ and μ = 0.0011 kg m-¹ s-1) flows at 5 m s-1 over a 0.3 m long flat plat. Determine if the flow in the boundary layer is laminar over the entire length of the plat or it becomes turbulent at a downstream location. If latter is the case, determine the location of transition from laminar to turbulent. [Ans. BL flow is Laminar & turbulent, x = 0.11 m]

Please show your solution and write clearly.

The laminar flow of water in a small pipe is given by where R = 0.5 cm is the pipe radius, and Umax = 20 cm/s. Assume the temperature is 15°C. (a) Find the wall shear stress. (b) Find the pressure drop in a 10 cm length of the pipe. (c) Verify that the flow is indeed laminar.  

Just part d please

For the edge dislocation, cite the relationship between the direction of the applied shear stress and the direction of dislocation line motion. O Neither parallel nor perpendicular O Parallel O Perpendicular

As shown in the accompanying figure, a thin flat plate rests on top of a film of ambient temperature (i.e. 20 °C) water. When a small force F is applied to this plate, the velocity profile within the water film can be described as vx = 40y-800y² where y is the distance (m) from the bottom stationary plate. a. Show that velocity equation satisfies the 'no-slip' conditions that must exist for both the top moving plate and bottom stationary plate. b. Calculate the magnitude of the shear stress (in Pa) that is acting on the top plate 10 mm 0.32 m/s -X

5. Consider the problem of laminar, unidirectional flow in a pipe of radius a. Using the Navier- Stokes Equations: Solve for the velocity profile, u(r), in the pipe Calculate the maximum and bulk velocity (umax, ub) for this flow

l