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The viscosity of a fluid is to be measured by a viscometer constructed of two 75...
Class Test A civil engineering student working in a fluid mechanics laboratory wants to measure the...
Class Test A civil engineering student working in a fluid mechanics laboratory wants to measure the viscosity of a fluid by a viscometer constructed of two 90-cm-long concentric cylinders. The inner diameter of the outer cylinder is 16 cm, and the gap between the two cylinders is 0.12 cm. The inner cylinder is rotated at 200 rpm, and the torque is measured to be 2.0 N-m. What is the viscosity of the fluid? 200 rpm 0.12 cm Fluid Stationary cylinder
A viscometer is an instrument for measuring the viscosity of a fluid. In a simple form,...
A viscometer is an instrument for measuring the viscosity of a fluid. In a simple form, it consists of two concentric cylinders, with the outer cylinder fixed and the inner cylinder free to rotate. The space between the two cylinders is filled with the fluid in question, and the torque required to rotate the inner cylinder at a constant speed is measured. One such device consists of two 21.0-cm long cylinders, one 15 cm in diameter and the other 15.4...
(Chapter 1) (Ans. 8.07x104 Pa.s) A concentric cylinder viscometer may be formed by rotating the inner...
(Chapter 1) (Ans. 8.07x104 Pa.s) A concentric cylinder viscometer may be formed by rotating the inner member of a pair of closely fitting cylinders. For small clearances, a linear velocity profile maybe assumed in the liquid filling the annular clearance gap. A viscometer has an inner cylinder of 75 mm diameter and 150 mm height, with a clearance gap width of 0.02 mm. A torque of 0.021 N.m is required to turn the inner cylinder at 100 rpm. Determine the...
The space between two 20-in long concentric cylinders is filled with glycerin viscosity-8.5 x 10 3...
The space between two 20-in long concentric cylinders is filled with glycerin viscosity-8.5 x 10 3 lb s/㎡). The inner cylinder has a radius of 2 n and the gap width between cylinders is o. 1 in Determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. The outer cylinder is fixed. Assume the velocity distribution in the gap to be linear ft*lb ft lb/s
An incompressible Newtonian fluid is contained between two long concentric cylinders of radii AR (< 1) and R, as sho...
An incompressible Newtonian fluid is contained between two long concentric cylinders of radii AR (< 1) and R, as shown in the figure. The inner cylinder rotates with an angular velocity Ω (a) Compute the velocity distribution between the cylinders. End effects caused by (b) Compute the torque required to hold the outer cylinder stationary. (8 Pts)
An incompressible Newtonian fluid is contained between two long concentric cylinders of radii AR (
A vertical cylinder 15 cm in diameter is placed inside and concentric with a cylinder 15.8...
A vertical cylinder 15 cm in diameter is placed inside and concentric with a cylinder 15.8 cm in diameter. Oil with a viscosity of 0.21 Pa.s fills the space between the cylin- ders. If the inner cylinder is rotated at 30 rpm, what are the shear rate and the shear stress at the outer cylinder?
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-line is along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius o...
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-line is along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius of ra and the outer cylinder has a radius rb. The inner cylinder moves in the positive z-direction with a velocity W while the outer cylinder is held stationary. The fluid contained between the cylinders is assumed to be Netwonian, incompressible, isotropic and isothermal. The flow of the fluid...
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-line is along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius o...
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-line is along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius of ra and the outer cylinder has a radius Tb. The inner cylinder rotates with an angular velocity of w whereas the outer cylinder is stationary. There is no pressure gradient applied nor gravity. The fluid contained between the cylinders is assumed to be Netwonian, incompressible, isotropic and isothermal....
Q2: A liquid with viscosity μ is confined between two concentric circular surfaces of length L....
Q2: A liquid with viscosity μ is confined between two concentric circular surfaces of length L. The radii of the inner and outer surfaces are R, and respectively. The outer hollow cylinder is stationary and the inner solid cylinder is moving in the axial direction at velocity U . The axial velocity of the liquid is given as u(r)- Ro, R (In r- In Ro), where r is the radial position. In(R, / R) ener cylinder, moving u (a) Find...
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-lines are along...
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-lines are along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius of r, and the outer cylinder has a radius rb. The inner and outer cylinders are stationary. Gravity exists in the negative z- direction, whereas a constant pressure gradient exists in the positive z-direction. The fluid contained between the cylinders is assumed to be Netwonian, incompressible, isotropic and isothermal....
Class Test A civil engineering student working in a fluid mechanics laboratory wants to measure the viscosity of a fluid by a viscometer constructed of two 90-cm-long concentric cylinders. The inner diameter of the outer cylinder is 16 cm, and the gap between the two cylinders is 0.12 cm. The inner cylinder is rotated at 200 rpm, and the torque is measured to be 2.0 N-m. What is the viscosity of the fluid? 200 rpm 0.12 cm Fluid Stationary cylinder
A viscometer is an instrument for measuring the viscosity of a fluid. In a simple form, it consists of two concentric cylinders, with the outer cylinder fixed and the inner cylinder free to rotate. The space between the two cylinders is filled with the fluid in question, and the torque required to rotate the inner cylinder at a constant speed is measured. One such device consists of two 21.0-cm long cylinders, one 15 cm in diameter and the other 15.4...
(Chapter 1) (Ans. 8.07x104 Pa.s) A concentric cylinder viscometer may be formed by rotating the inner member of a pair of closely fitting cylinders. For small clearances, a linear velocity profile maybe assumed in the liquid filling the annular clearance gap. A viscometer has an inner cylinder of 75 mm diameter and 150 mm height, with a clearance gap width of 0.02 mm. A torque of 0.021 N.m is required to turn the inner cylinder at 100 rpm. Determine the...
The space between two 20-in long concentric cylinders is filled with glycerin viscosity-8.5 x 10 3 lb s/㎡). The inner cylinder has a radius of 2 n and the gap width between cylinders is o. 1 in Determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. The outer cylinder is fixed. Assume the velocity distribution in the gap to be linear ft*lb ft lb/s
An incompressible Newtonian fluid is contained between two long concentric cylinders of radii AR (< 1) and R, as shown in the figure. The inner cylinder rotates with an angular velocity Ω (a) Compute the velocity distribution between the cylinders. End effects caused by (b) Compute the torque required to hold the outer cylinder stationary. (8 Pts)
An incompressible Newtonian fluid is contained between two long concentric cylinders of radii AR (
A vertical cylinder 15 cm in diameter is placed inside and concentric with a cylinder 15.8 cm in diameter. Oil with a viscosity of 0.21 Pa.s fills the space between the cylin- ders. If the inner cylinder is rotated at 30 rpm, what are the shear rate and the shear stress at the outer cylinder?
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-line is along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius of ra and the outer cylinder has a radius rb. The inner cylinder moves in the positive z-direction with a velocity W while the outer cylinder is held stationary. The fluid contained between the cylinders is assumed to be Netwonian, incompressible, isotropic and isothermal. The flow of the fluid...
Consider two concentric, infinitely long cylinders. The cylinders are oriented such that the center-line is along the z-axis, and the radii exist in the r-direction. The inner cylinder has a radius of ra and the outer cylinder has a radius Tb. The inner cylinder rotates with an angular velocity of w whereas the outer cylinder is stationary. There is no pressure gradient applied nor gravity. The fluid contained between the cylinders is assumed to be Netwonian, incompressible, isotropic and isothermal....
Q2: A liquid with viscosity μ is confined between two concentric circular surfaces of length L. The radii of the inner and outer surfaces are R, and respectively. The outer hollow cylinder is stationary and the inner solid cylinder is moving in the axial direction at velocity U . The axial velocity of the liquid is given as u(r)- Ro, R (In r- In Ro), where r is the radial position. In(R, / R) ener cylinder, moving u (a) Find...
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