For the capillary-tube viscometer shown, the liquid to be tested is drawn into thetube to the level of the top etched line. The time is then obtained for the liquid todrain to the bottom etched line. The kinematic viscosity, v, in m?/s is thenobtained from the equation v = KR*t where K is a constant, R is the radius ofthe capillary tube in mm, and tis the drain time in seconds. When glycerin, whoseviscosity is 1.4 Pa.s at 20°C and density is 260 kg/m³, is used as a calibrationfluid in a particular viscometer the drain time isdensity of 970 kg/m3 is tested in the same viscometer the drain time is 900 s.What is the dynamic viscosity of this liquid?GlassstrengtheningbridgeEtched lines430 s. When a liquid having aCapillarytube

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Answered: For the capillary-tube viscometer…

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

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n = Xe()r -------Equation 1 where X = 1.7419 and (E/R) = -0.018 are constants for a given fluid. You are required to carry out appropriate calculations on the effect of changes in temperature given in table A by using equation 1 for Ethanol on the viscosity of a fluid. Table A NO Temperature viscocity n T°C cP 10 3 20 30 5 40 6. 50 7 60 8 70 In addition to this, calculate other constraints such as the variety of shear stress (T) and force due to fluid viscosity, when the two layers of different compressible Newtonian fluids are contained between two flat plates separated by a distance of 0.05m and fluid moving with the velocity of 2m/s in the horizontal direction. Assume the shear area between the fluid layers is 0.5m². To do this you required to explain, with examples, the effects of temperature and shear forces on Newtonian and non-Newtonian fluid. Also, explain the operation and constraints of different viscometers that quantify viscosity in fluids. 2.
The differential change in pressure p close to the surface of a static fluid is given by the following expression:dp/dy = -3Ap2,where A is a constant, with units of 1/(atm•m), and p is the pressure in atm. The pressure at the surface of the fluid is p(0) = 1 atm, and the coordinate y here is positive upwards with origin at the surface. An absulute pressure gauge is placed at a depth 0.19m in the fluid. What would be the reading of the pressure gauge in units in atm? you can take the constant A=1(atm.m)^-1
3. In the Figure below, determine: (a) the calibration range of the DP transmitter in inches of water, (b) the differential pressure head in inches water at the transmitter at 75% level Given: 100% S HLL NLL LLL Xx Y3=130 in. SG3=1.26 S = 60 in Y2 = 30 in. SG2=1.12 Y1 = 15 in. SG1 = 0.82
B1. Determine the kinematic viscosity of the fluid between the plates as shown in Figure B1 given the following information: F = 5N h = 0.5mm v = 7m/s L=21 cm w = 10cm SG= 0.80 Moving plate Stationary plate Fluid Figure B1 V
The company has opted to purchase a new viscometer for you, as such, you are required by topropose two options for new viscometers. Select two viscometers and explain their operation andconstraints. (P3)b. (P4) Given that you achieved the following results with a U-Tube viscometer:Temperature/ C Time / s40 5760 4180 29100 16Calculate the viscosity at each temperature if the calibration constant is 0.511.d. (M2) Illustrate the results on a graph of temperature vs viscosity and give a briefing on what yourresults indicate, identifying the response of the oil to temperature and explaining anydiscrepancies that may have occurred during the testing.e. (D2) From your testing you discovered that you had a Newtonian and Non-Newtonian sample.Explain to your team what the two terms mean with respect to temperature and shear force onboth samples, giving at least one example of each type of fluid.
Problem 2 The apparatus sketched in the figure below serves as a viscometer i.e. it can be used to measure the viscosity of a liquid. In the drawing, D is a large reservoir containing a viscous liquid A and E is a cylindrical tube of radius R, open at both ends, surrounding and coaxial with B, which is a cylindrical "bob" of radius êR that is dragged up through the fluid by a frictionless pulley system (C) utilizing a weight W. Determine a design equation that relates the viscosity of the liquid to the geometry of the system and the weight W. Hint: you can assume that the length of the cylindrical tube is sufficiently long for the flow to reach steady state. W E D B
i need help with this question please
An incompressible fluid oscillates harmonically (V = Vosinut, where Vis the velocity) with a frequency of 9 rad/s in a 6-in.-diameter pipe. A 1/5 scale model is to be used to determine the pressure difference per unit length, Ap, (at any instant) along the pipe. Assume that Api= f(D, Vo, w, t, u, p) where D is the pipe diameter, w the frequency, t the time, the u fluid viscosity, and p the fluid density. If the same fluid is used in the model and the prototype, at what frequency should the model operate? Wm i rad/s
Q) The velocity v (m/s) of air flowing past a flat surface is measured at several distances y(m) away from the surface. Use Newton'sviscosity law to determine the shear stress t (N/m³) at the surface (y=0). dv 'dy Assume a value of dynamic viscosity =1.8* 10- N.s/hm² y, m V, m/s 0.002 0.287 0.006 0.899 0.012 |1.915 0.018 3.048 0.024 4.299 (r-7) Use two forward đifference approximations for h=0.006. Estimate the approximate percent relative error, &. b- , (t=?) Use two forward difference approximations with a step size of 0.012 (h=0.012). Estimate the approximatepercent relative error, , e.. (r-?) ApplyRichardson extrapolation. Estimate the approximate percent relative error, & (r=?) Use unequally spaced three data and the first-derivative of a second-order d- Langrange polynomial to evaluate the derivative (y=0) and shear stress. Estimate the approximate percent relative error, Eg Compare the approximate estimates of the error ([ed ) for the formulas used.
Determine the force P required to move the wedge to the right if the coefficient of static friction is 0.35 at all contact surface (Figure 3). The uniform cylinder weight, W is 20 kN, and the weight of the wedge may be neglected. 15°
5. As part of a pollution study, a model concentration c as a function of position x has been developed, c(x)=A(e-x/2a-e-x/a) where A-10-5 ppm (parts per million) and a=1 m. Plot this concentration from x-0 to .x= 10 m. If a vehicle with a pollution sensor travels through this atmosphere at u-U (U=10 m/s), develop an expression for the measured concentration rate of change of c with time, and plot using given data. (a) At what location will the sensor indicate the most rapid rate of change? (b) What is the value of this rate of change?

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