Homework Answers
Add Answer to:
5. In a fully developed fluid flow in a tube, which following statement(s) is(are) true(12 points):...
Part 4: Viscous Flow Concepts (10 points,5 each) The flow through a duct is fully-developed, with...
Part 4: Viscous Flow Concepts (10 points,5 each) The flow through a duct is fully-developed, with a velocity profile as shown in the figure. has a rectangular cross section, and the velocity profile is uniform in the z-direction (it does not change going into the page) If we wish to determine the mass flow rate through the duct, which differential area would we use? Why? If we wish to determine the forced caused by shear stress on the bottom wall,...
2. (20 marks) The fully-developed, laminar fluid flow through a circular pipe is considered to be...
2. (20 marks) The fully-developed, laminar fluid flow through a circular pipe is considered to be one dimensional with a velocity profile given by u(r) = Umax(1 - 52/R2), where R is the radius of the pipe, r is the radial distance from the center of the pipe, and Umax is the maximum flow velocity at the center of the pipe. a) Derive a relation for the drag force applied by the fluid on a section of the pipe of...
Consider a fully developed laminar flow of an incompressible Newtonian fluid between two infinite parallel plates,...
Consider a fully developed laminar flow of an incompressible
Newtonian fluid between two infinite parallel plates, separated by
a distance of 2B. The z coordinate is the direction of the flow.
The width of the plates is 2W (direction y). The coordinate axis is
located half of the 2 plates.
a) Obtain the distribution of speeds in steady state.
b) Obtain the expression for the maximum velocity and write the
velocity distribution of part a) as a function of the...
Which of the following statements are true (could be multiple) for internal flow through a pipe?...
Which of the following statements are true (could be multiple) for internal flow through a pipe? In laminar flow, the Nusselt is higher for constant wall temperature compared to that for constant heat flux. In turbulent flow, the Nusselt number is higher at the pipe exit than at the pipe entrance In laminar flow, the Nusselt number is lower at the pipe exit than at the pipe entrance In laminar fully developed flow, the Nusselt number is independent of Reynolds...
State whether each statement below is True (T) or False (El. Use your best engineering judgment"....
State whether each statement below is True (T) or False (El. Use your best engineering judgment". 1. Phenomenological laws classify and describe phenomena based on observation of macroscopic behavior without explanation of microscopic behavior. 2. Fourier's Law of Heat Conduction states that the heat flux is directly proportional to the temperature gradient. 3. A "gray surface" absorbs the same magnitude of radiation as a “black surface". 4. A "black surface" surfaces emit less radiation than does a "gray surface". 5....
Laminar Fully Developed 2-D Channel Flow Velocity Velody Vectors and beforming Fluid Elements = 5(1. y)...
Laminar Fully Developed 2-D Channel Flow Velocity Velody Vectors and beforming Fluid Elements = 5(1. y) = 0 For Problem D) FOr the fluid particle circled in red the average value of the shear strain rate = _ (1/s) very. slight curve III 05 LE Numeric Answer:
Problem 1: Differential Relations for a Fluid Particle (25 points) Two horizontal, infinite, parallel plates are...
Problem 1: Differential Relations for a Fluid Particle (25 points) Two horizontal, infinite, parallel plates are spaced a distance b apart. A viscous liquid is contained between the plates. The bottom plate is fixed, and the upper plate moves parallel to the bottom plate with a velocity U. Assume no-slip boundary conditions. There is no pressure gradient in the direction of flow (a) Demonstrate using the Navier-Stokes equation in the x-direction that the velocity profile is of the form: (15...
1. Consider a 5 m long rectangular tube with a hot fluid with the properties specified in the diagram below. The inlet...
1. Consider a 5 m long rectangular tube with a hot fluid with the properties specified in the diagram below. The inlet and outlet fluid temperatures are controlled to vary from 20 to 30 °C by applying a constant heat flux at the surface of the tube. We can ignore conduction and radiation phenomena in this problem and assume that the fluid velocity profile does not change within the tube. Using the Nu correlation from table 8.1 below, find the...
Which one of the following statements concerning fluid streamlines is true? A. In turbulent flow, two...
Which one of the following statements concerning fluid streamlines is true? A. In turbulent flow, two or more streamlines may cross. B. In steady flow, the pattern of streamlines does not change with time. C. In turbulent flow, streamlines can begin or end at any point. D. Streamlines are perpendicular to the velocity of the fluid at every point. E. In steady flow, streamlines must remain parallel and equally spaced.
Water is in steady fully developed laminar flow between two horizontal, very wide (W) and long...
Water is in steady fully developed laminar flow between two horizontal, very wide (W) and long (L) parallel surfaces separated by a distance b. The bottom surface at y 0 moves in the negative x-direction at a speed vo while the top surface at y b is stationary. In addition, a constant pressure gradient dP/dx is acting on the liquid in the x-direction. (a) Write the simplified form of the Navier-Stokes equation and the appropriate boundary conditions. (b) Derive an...
Part 4: Viscous Flow Concepts (10 points,5 each) The flow through a duct is fully-developed, with a velocity profile as shown in the figure. has a rectangular cross section, and the velocity profile is uniform in the z-direction (it does not change going into the page) If we wish to determine the mass flow rate through the duct, which differential area would we use? Why? If we wish to determine the forced caused by shear stress on the bottom wall,...
2. (20 marks) The fully-developed, laminar fluid flow through a circular pipe is considered to be one dimensional with a velocity profile given by u(r) = Umax(1 - 52/R2), where R is the radius of the pipe, r is the radial distance from the center of the pipe, and Umax is the maximum flow velocity at the center of the pipe. a) Derive a relation for the drag force applied by the fluid on a section of the pipe of...
Consider a fully developed laminar flow of an incompressible
Newtonian fluid between two infinite parallel plates, separated by
a distance of 2B. The z coordinate is the direction of the flow.
The width of the plates is 2W (direction y). The coordinate axis is
located half of the 2 plates.
a) Obtain the distribution of speeds in steady state.
b) Obtain the expression for the maximum velocity and write the
velocity distribution of part a) as a function of the...
Which of the following statements are true (could be multiple) for internal flow through a pipe? In laminar flow, the Nusselt is higher for constant wall temperature compared to that for constant heat flux. In turbulent flow, the Nusselt number is higher at the pipe exit than at the pipe entrance In laminar flow, the Nusselt number is lower at the pipe exit than at the pipe entrance In laminar fully developed flow, the Nusselt number is independent of Reynolds...
State whether each statement below is True (T) or False (El. Use your best engineering judgment". 1. Phenomenological laws classify and describe phenomena based on observation of macroscopic behavior without explanation of microscopic behavior. 2. Fourier's Law of Heat Conduction states that the heat flux is directly proportional to the temperature gradient. 3. A "gray surface" absorbs the same magnitude of radiation as a “black surface". 4. A "black surface" surfaces emit less radiation than does a "gray surface". 5....
Laminar Fully Developed 2-D Channel Flow Velocity Velody Vectors and beforming Fluid Elements = 5(1. y) = 0 For Problem D) FOr the fluid particle circled in red the average value of the shear strain rate = _ (1/s) very. slight curve III 05 LE Numeric Answer:
Problem 1: Differential Relations for a Fluid Particle (25 points) Two horizontal, infinite, parallel plates are spaced a distance b apart. A viscous liquid is contained between the plates. The bottom plate is fixed, and the upper plate moves parallel to the bottom plate with a velocity U. Assume no-slip boundary conditions. There is no pressure gradient in the direction of flow (a) Demonstrate using the Navier-Stokes equation in the x-direction that the velocity profile is of the form: (15...
1. Consider a 5 m long rectangular tube with a hot fluid with the properties specified in the diagram below. The inlet and outlet fluid temperatures are controlled to vary from 20 to 30 °C by applying a constant heat flux at the surface of the tube. We can ignore conduction and radiation phenomena in this problem and assume that the fluid velocity profile does not change within the tube. Using the Nu correlation from table 8.1 below, find the...
Which one of the following statements concerning fluid streamlines is true? A. In turbulent flow, two or more streamlines may cross. B. In steady flow, the pattern of streamlines does not change with time. C. In turbulent flow, streamlines can begin or end at any point. D. Streamlines are perpendicular to the velocity of the fluid at every point. E. In steady flow, streamlines must remain parallel and equally spaced.
Water is in steady fully developed laminar flow between two horizontal, very wide (W) and long (L) parallel surfaces separated by a distance b. The bottom surface at y 0 moves in the negative x-direction at a speed vo while the top surface at y b is stationary. In addition, a constant pressure gradient dP/dx is acting on the liquid in the x-direction. (a) Write the simplified form of the Navier-Stokes equation and the appropriate boundary conditions. (b) Derive an...
Most questions answered within 3 hours.
-
For the reaction 1N2+3H2-----> 2NH3, would the reaction rate
trend be: delta[NH3]/ delta t = -2...
asked 10 minutes ago -
A sock stuck to the side of a clothes-dryer barrel has a
centripetal acceleration of 24...
asked 59 minutes ago -
A perfect gas undergoes an isentropic process such that its
volume doubles. If the ratio of...
asked 1 hour ago -
list the elements in groups 3A to 6A in the same order as in the
periodic...
asked 1 hour ago -
Estimating effect size. Peng and Chen (2014)
evaluated effect size estimates for various tests. In their...
asked 1 hour ago -
Write a script in MySQL that creates and calls a stored
procedure name test. This procedure...
asked 1 hour ago -
If we test the following: H0: μ = 17
vs. H1: μ ≠ 17 and the...
asked 1 hour ago -
in the past year TVG had revenues of 3 million, cost
of goods sold of $25...
asked 1 hour ago -
4) In a polypeptide, which bond cannot rotate because of its
partial double bond character?
The...
asked 2 hours ago -
Assume that in the short run L = 1,000 and K = 100. 1. What is...
asked 2 hours ago -
At a given temperature, 2.06 atm of H2 and 3.7 atm of Br2 are
mixed and...
asked 2 hours ago -
Sodium reacts with Hydrochloric acid to form sodium chloride and
hydrogen gas. 2Na(s)+ 2 HCl(aq)-> 2...
asked 2 hours ago