A suspension made of aspirin particles and ethanol is flowing in a pipe of 50 mm diameter. Ethanol and aspirin properties are reported in the table below. Property Ethanol density (kg/m³) Ethanol dynamic viscosity (Pas) Particle density (g/cm³) Particle mean diameter (µm) Region Re single particle range CD Value 789 0.00109 Assume the single particle Reynolds number is equal to 0.1. The empirical parameters a and b are 0.7 and 0.2 respectively. Stokes < 0.3 24 Rep 1.4 20 Intermediate 0.3< Rep < 500 24 Rep (1 + 0.15 Rep 0.687) Newton's law 500 Rep < 2 x 105 ~0.44 (a) Calculate the critical velocity above which particles will remain suspended during the suspension flow in the pipe. Consider the suspension is flowing under Stokes flow regime. (b) How does the critical velocity of the suspension travelling in the pipe change if the solvent is ethylene glycol rather than ethanol? Ethylene glycol density is 1110 kg/m³ and dynamic viscosity is 0.0162 Pa.s. (c) How does the critical velocity of the suspension travelling in the pipe change if the mean diameter of the suspended particles is 300 μm? (d) How does the critical velocity of the suspension travelling in the pipe change if the diameter of the pipe is 10 cm?

A suspension made of aspirin particles and ethanol is flowing in a pipe of 50 mm diameter. Ethanol and aspirin properties are reported in the table below. Property Ethanol density (kg/m³) Ethanol dynamic viscosity (Pas) Particle density (g/cm³) Particle mean diameter (µm) Region Re single particle range CD Value 789 0.00109 Assume the single particle Reynolds number is equal to 0.1. The empirical parameters a and b are 0.7 and 0.2 respectively. Stokes < 0.3 24 Rep 1.4 20 Intermediate 0.3< Rep < 500 24 Rep (1 + 0.15 Rep 0.687) Newton's law 500 Rep < 2 x 105 ~0.44 (a) Calculate the critical velocity above which particles will remain suspended during the suspension flow in the pipe. Consider the suspension is flowing under Stokes flow regime. (b) How does the critical velocity of the suspension travelling in the pipe change if the solvent is ethylene glycol rather than ethanol? Ethylene glycol density is 1110 kg/m³ and dynamic viscosity is 0.0162 Pa.s. (c) How does the critical velocity of the suspension travelling in the pipe change if the mean diameter of the suspended particles is 300 μm? (d) How does the critical velocity of the suspension travelling in the pipe change if the diameter of the pipe is 10 cm?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

O 2 O 3 O 4 V= 7L V= 7L V= 7L V= 7L T= 100K T= 500K T= 300K T= 700K P= ? P= ? P= ? P= ? Note: Each "dot" represents one gas particle. a. What variables are held constant? volume b. Which container do the particles have the most KE? 1 4. c. Which container has the lowest temperature? 1 4 d. Which container has the lowest pressure? 1 2 3 4 e. Which container has the highest pressure? 1 4. f. What gas law does the above relationship represent? What kind of relationship does this represent(direct or indirect)? L Display Settings O Focus 3:49 PM 2/26/202 F12 tist prt sc
The volume in buoyancy formula is the volume of the entire object. Select one: True False Reynold's number identify the laminarity of the fluid. Select one: True False If the velocity in a given location is invariant with time the flow is said to be non-steady. Select one: True O False The viscosity of a fluid is a measure of its resistance to defeormation. Select one: True O False Flow rate is the amount of fluid passing through a section per unit of pressure. Select one: True O False
As we explained in earlier chapters, the air resistance to the motion of a vehicle is something important that engineers investigate. The drag force acting on a car is determined experimentally by placing the car in a wind tunnel. The air speed inside the tunnel is changed, and the drag force acting on the car is measured. For a given car, the experimental data generally is represented by a single coefficient that is called drag coefficient. It is defined by the following relationship: F, where air resistance for a car that has a listed C, = drag coefficient (unitless) measured drag force (N) drag coefficient of 0.4 and width of 190 cm and height of 145 cm. Vary the air speed in the range of 15 m/s
56.0 mL of two different liquids are poured through a funnel with a narrow exit tube, and the time for all of the liquid to flow through is recorded. Here are some results: time to flow through funnel trial Liquid X Liquid Y 1.60 s 3.62 s 1.52 s 3.44 s 1.44 s 3.56 s Note: the two liquids have the same density. Which statement below is true about these liquids based only on the data in the table? O The intermolecular forces in liquid X are stronger than those in liquid Y. The boiling point of liquid X is higher than the boiling point of liquid Y. The viscosity of liquid X is greater than the viscosity of liquid Y. The surface tension of liquid X is greater than the surface tension of liquid Y. The viscosity of liquid X is less than the viscosity of liquid Y. 3.
The Reynold's number of a sphere falling in air is 1E6. If the sphere's radius is 1ft, what is its velocity? Density of air is 0.00234 slug/ft³ and viscosity of air is 3.8E-7 lbf-sec/ft²A. 2.5 ft/sB. 5.1 ft/sC. 40.6 ft/sD. 81.2 ft/s
Task 2 The performance of a wind turbine is believed to depend on the following parameters: Wind speed U ● ● ● ● Angular velocity of rotor Rotor diameter Chord length Pitch of blades Density of air flow Power generated W Φ C р P W • Viscosity of air H (Note: The pitch of the blade is the distance it would advance through the fluid per revolution, without slip.) a) Find a full set of dimensionless parameters which define the operation of the unit. Wind tunnel power tests have been performed on a blade set with the following characteristics: Wind speed 19 m/s Angular velocity of rotor 524 rad/s Rotor diameter 0.25 m Chord length Pitch of blades Density of air flow Power generated Viscosity of air 0.025 m 0.216 m 1.2 kg/m³ 44 W 1.8 x 10-5 Pa.s Design Engineers intend to use these results to find the power output of an identical unit when scaled up to a rotor diameter of 40 m, also using air, and conserving all dimensionless parameters. b) What air speed and rotor speed would be needed to…
Assignment 3 On Viscosity Calculation - Word TOUT REFERENCES MAILINGS REVIEW VIEW Hyperlink P Bookmark tArt Chart Screenshot Apps for Office Online Video Cross-reference Comment Header Footer Page Number Text Quick WordA Box Parts - ns Apps Media Links Comments Header & Footer (2) Referring to the following figure, the distance between plates is Ay = 0.5 cm, Av: = 10 cm/s, and the fluid is ethanol at 273 K having a viscosity of 1.77cp (0.0177 g/cm s). (a) Calculate the shear stress ty and the velocity (b) gradient of shear rate -/dy using cgs units. (c) Repeat using SI units. A Torce Fdshear berween teoparailel plates
You are working for a medical device start-up company as a design engineer. Your first task is to make measurements on the flow of blood plasma through your prototype. The device specifications require that 37°C plasma flow into the device pass through a bank of 100 tubes (0.2mm diameter), then exit the device. The total flow rate for the device must be 800 ml min^-1. If you want to maintain a pressure drop across each tube below 100 pascals, what is the maximum length of the tube in centimeters?
The volume in buoyancy formula is the volume of the entire object. Select one: O True O False Reynold's number identify the laminarity of the fluid. Select one: True False If the velocity in a given location is invariant with time the flow is said to be non-steady. Select one: O True O False The viscosity of a fluid is a measure of its resistance to defeormation. Select one: True O False
16000 1.440 14000 1.435 12000 1.430 10000 1.425 8000 1.420 6000 1.415 4000 1.410 2000 1.405 1.400 45 15 20 25 30 35 40 Temperature ["C] +dynamic viscosity (mPas] + density (gicm") Figure 1 (a) As shown in Figure 1, viscosity and density of honey was found to decrease with increase in temperature. Explain the reasons behind these phenomenon related to Fluid Mechanics in microscopic view. Dynamic viscolsty [mPa.s] Density [g/cm³]
The viscosity of a light mineral oil is tested by the settlings sphere method given the following data calculate the viscosity drop equals 61.5 cm time of drop equals 2.1 second density of oil equals 0.838 g/mL density of sphere equals 1.89 g/cm^3. Radius of sphere equals 0.80 cm.
1. To determine the dynamic viscosity of a liquid you take repeated measurements of the liquid density and kinematic viscosity. These data are summarized in the following table: Avg. measurement Total Uncertainty P 999 kg/m³ ±0.5% V 1.23 mm²/s ±0.01 mm²/s kg Ns What is the dynamic viscosity? Give dynamic viscosity in units of; which is the same as ms 2. Determine the absolute and relative uncertainties in the dynamic viscosity.