2- Find the Re number for a fluid with the following properties. Based on the Re number the fluid is probably streaming like..........

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

a) (i) What are a Newtonian fluid and a -Newtonian fluid? Classify pendent non-Newtonian fluids and illustrate - flow time- behaviours in a diagram g. shear stress vs. shear (ii) across a flat plate and the s with the aid of a schematic diagram. Explain boundary concept for a flow

A. Suppose a free-fall ride at an amusement park starts at rest and is in free fall. What is the velocity of the ride after 2.3 s? How far do people on the ride fall during the 2.3 s time period?

1) Consider the infinitely tall, annular mixing tank. The fluid to be mixed is Fluid between the inner cylinder and the outer wall. The fluid is mixed by a Fluid spinning the inner cylinder at an angular velocity of n (s-1). The tank has an inner radius of R (m) and the R. inner cylinder has a diameter of k (m). Fluid There is no net flow in the vertical or radial directions. Top view Answer the following questions about Side view this sytem:

on problem B    equation 1) what symbol is that? it looks like a N or an X , can you tell me the symbols for transport velocities and mass transfer   thanks  can you clarify more on what the symbolism is for that equation

2. Adjacent Flow of Two Immiscible Power Law Fluids Two immiscible fluids are contained in the space between two infinite parallel plates. The upper plate, at y = h, is in motion with a velocity U. Initially there is no pressure gradient in the x-direction. We have already solved for the velocity profile between the two plates for a number of different conditions, now we are going to make fluid II non-Newtonian. U Fluid II Interface Between Two Immiscible Fluids ah Fluid I d) Go back to your old assignment (b), but now let's let Fluid II be non-Newtonian. Specifically, model the fluid as a power law fluid with n =ky". Solve for the velocity profile across the channel and sketch the result for a shear thinning and shear thickening fluid as the velocity on the top plate is systematically increased. e) Now remove the velocity of the top plate and instead apply a pressure gradient. What is the velocity profile look like now?

What is the velocity (in cm/s) at radius r= 4.95 cm? What is the viscosity, mu (in g/(cm*s)) ?

A Newtonian fluid with constant density flows in a parallel-plate apparatus that separated by a distance d and length L as shown in Figure 1. The top plate is moving in z-direction with a velocity uw. Derive the velocity distribution of the fluid, vz as a function of y using equation of motion in Appendix 1. List the postulates and you may neglect the gravity force.