can you help me with part b) please Question 3As a means of measuring the viscosity, a liquid is forced to flow through two very largedpYou can assume that the velocity betweendxparallel plates by applying a pressure gradient,the plates is given by1 dpu(y)2µ dx (h – y)where u is the fluid viscosity, dp/dx is the pressure gradient and h is the gap between theplates.a) Derive an expression for the shear stress acting on the top plate, Tw.b) Q' is the flow rate per unit width (i.e. has units of m?/s). Express Q' in terms of Tw.c) When the flow rate per unit width is Q' = 1.2 x 10-4 m²/s, the gap between theplates is 5 mm, the device estimates the shear stress at the top wall to be -0.05Pa. Estimate the viscosity of the fluid.d) When the tests are repeated for a blood sample, different estimates of viscosity are found fordifferent flow rates. What does this tell you about the viscosity of blood? Use appropriateterminology. (1 sentence).e) As the pressure gradient is increased, at a certain point the measurements cease to bereliable. Using your knowledge of fluid mechanics, give a possible reason for this. Useappropriate terminology. (1 sentence).

Answered: Image /qna-images/answer/e39153e0-f28b-4904-be2c-4b0ac604a2b4.jpg

As a means of measuring the viscosity, a liquid is forced to flow through two very large dp You can assume that the velocity between dx parallel plates by applying a pressure gradient, the plates is given by 1 dp y(h-y) 2µ dx (h - y) u(y) = - where u is the fluid viscosity, dp/dx is the pressure gradient and h is the gap between the plates. a) Derive an expression for the shear stress acting on the top plate, Tw. b) Q' is the flow rate per unit width (i.e. has units of m?/s). Express Q' in terms of Tw.

As a means of measuring the viscosity, a liquid is forced to flow through two very large dp You can assume that the velocity between dx parallel plates by applying a pressure gradient, the plates is given by 1 dp y(h-y) 2µ dx (h - y) u(y) = - where u is the fluid viscosity, dp/dx is the pressure gradient and h is the gap between the plates. a) Derive an expression for the shear stress acting on the top plate, Tw. b) Q' is the flow rate per unit width (i.e. has units of m?/s). Express Q' in terms of Tw.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.13P: 5.13 The torque due to the frictional resistance of the oil film between a rotating shaft and its...

See similar textbooks

Similar questions

Please answer only when you are sure and give correct answer Thedensity of an oil at 23°C is 750kg / (m ^ 3) Find its relative density and kinematic viscosity if the dynamic viscosity is 5 * 10 ^ - 3 * kg / m * s .
what is the relationship between the fluid viscosity and the drag force Fdrag?
Air with density of 1.225 kg/m^3 and viscosity of 1.789 x 10^-5 kg/m-s flows in a wind tunnel, the wind tunnel spped is measured with Pitot tube probe. For a certain run, the stagantion pressure is measured to be 472.6 Pa gage and the statric pressure is 15.43 Pa gage. Calculate the wind tunnel speed. Choose the right answer below: a.16.3 m/s b.18. 3 m/s c.17. 3 m/s d.19. 3 m/s
The volume flow in a water pipe is 9000 m°/h. The pipe length is 80 m, the pipe diameter 1 m. The material data of water are a density of 1000 kg/m? and kinematic viscosity v=10® m7s. A steel pipe with roughness 0.05 mm is used. Determine the pressure drop in the pipe.
SAE 10W30 motor oil has a dynamic viscosity of 0.21 kilograms per meter second and a specific gravity of 0.896 (a) What is the density of the motor oil in units of kilograms per cubic meter?
Ethylene glycol at 60 deg C with a velocity of 4 cm/s enters a 2.5 cm ID tube. At 60 deg C, the viscosity if 4.75 x 10^-6 sq.m/s. Determine the Reynolds number. Choose the correct answer below and PROVIDE A COMPLETE SOLUTION: a. 2000b. 2100c. 200d. 210
The flow rate of water in a garden hose is measured using the bucket-andstopwatch method. Filling a 5-L bucket takes 75 seconds. If the inner diameter of the hose is 10 mm and the density and viscosity of water are approximately 998 kg m-3 and 0.9 cP, respectively, (a) is the flow inside the hose laminar or turbulent? (b) If the flow rate is adjusted such that the flow is with Re = 2100, how long would it take to fill the same bucket?
Liquid A(sp gr = 0.95) at a temperature of 29°C is flowing at a rate of 120gal/min in a pipe with an inside diameter of 2.343 in. If the reynold number is 5.6 x 10^5. what is the viscosity of liquid A in centipoise. Final answer in four decimal.
η =2gr^2(ps−pl)/ 9v State the value of the viscosity and error on the value obtained in your experiments. Youshould show the formula derived for calculating the error on viscosity. pl (density of liquid)= 1294.164 ps ( density of solid sphere)= 8404 kg/m^3 v= 0.0479 +- 1.16x10^-3 m/s r= 0.0024325m error for radius is 1.65 x 10^-3 all values are in si units.
A pipe of diameter 2.5 m is required to transport an oil of sp.gr. 0.86 & viscosity 3×10- 2 poise at 3750 li/s. Tests were conducted on a 20cm diameter pipe using water at 20oC Find the velocity and rate of flow in the model. Viscosity of water at 20 m= 0.01poise.
As shown in Fig. 1.12, a horizontal interface 0-0 exists between two immiscible liquids. The dynamic viscosity of these two liquids are 0.14 Pa sand 0.24 Pa s respectively. The thickness is d1 0.8 mm and d2 1.2 mm respectively. Assuming that the velocity gradient is linear. Find theforce F required to push a bottom area A 1000 cm2 wood board to movewith velocity v0 0.4 m/s along the surface?
Calculate pressure loss in a pipe ( d = 55 mm, L = 200 m ), for oil mass flow rate of 133 kg/min. Oil density is 900 kg/m3and kinematic viscosity is ν = 4·10-5 m2/s. The sum of local losses in the pipe is 3,5. Round off the answer to one decimal digit in kPa, but enter the answer without the unit.