Problem #6 Water flows upward through a vertically positioned pipe measuring 3 cm in diameter. Wall...
Problem #6 Water flows upward through a vertically positioned pipe measuring 3 cm in diameter. Wall shear stress on the pipe is 2 N/m2 . Calculate the pressure drop across 1 m length of the pipe.
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Problem #6 Water flows upward through a vertically positioned
pipe measuring 3 cm in diameter. Wall...
H2.3 Consider water at 20°C flowing through a horizontal pipe of diameter 15 cm and length 10 m. ...
H2.3 Consider water at 20°C flowing through a horizontal pipe of diameter 15 cm and length 10 m. The flowrate is 0.021 m3/s and the wall shear stress is 5.76 N/m2. Assume fully developed flow. a. Verify that the flow is turbulent b. Determine the pressure drop [N/m2 c. Estimate the viscous sublayer thickness [mm], i.e., where y+ 5 d. Compare results of part c. with typical pipe roughness (see Table 8.1 in text and comment on implication e. Using...
Water flows with mass flow rate 0.0566kg/s through a pipe with diameter 30mm and length 600m....
Water flows with mass flow rate 0.0566kg/s through a pipe with diameter 30mm and length 600m. Find the pressure drop across the pipe if the friction factor is 8/Re, Density of water=1000Kg/m3 and the viscosity of water=0.0018Ns/m2 Select one: a. 3072 N/m2 O b. 3101 N/m2 0 c. 3111 N/m2 O d. 3001 N/m2 e. 3022 N/m2
Q2 A 200 mm diameter cast iron pipe with wall thickness of 15 mm is carrying water when the outle...
Q2 A 200 mm diameter cast iron pipe with wall thickness of 15 mm is carrying water when the outlet is suddenly closed. Calculate the maximmum discharge if the pressure rise is not to exceed 180 kN/m2 (a) assuming the pipe is rigid; (b) allowing for hoop stress but not longitudinal stress in the pipe wall; (c) assuming the pipe to have expansion joints throughout its length. (K-2.1 × 109 N/m 2, E 100x 109 N/m2)
Q2 A 200 mm...
Water flows at speed of 6 m/s through a horizontal pipe of diameter 3.5 cm. The...
Water flows at speed of 6 m/s through a horizontal pipe of
diameter 3.5 cm. The gauge pressure P1 of the water in the pipe is
1.7 atm. A short segment of the pipe is constricted to a smaller
diameter of 2.4 cm .
What is the gauge pressure of the water flowing through the
constricted segment? Atmospheric pressure is 1.013 × 10^5 Pa. The
density of water is 1000 kg/m^3 . The viscosity of water is
negligible. Answer in...
5.16. Water is flowing in a 3-cm-diameter pipe at an average velocity of Uav 2 m/s....
5.16. Water is flowing in a 3-cm-diameter pipe at an average velocity of Uav 2 m/s. Assuming water density of ρ-1000 kg/m 3 and viscosity μ-10-3 N s'm2, calculate the velocity at the center of the pipe, the shear τ at the wall, and the Reynolds number. Assuming laminar flow, calculate friction coefficient C and pressure drop dp/dx.
Question 3 [20 marks] Water (density p1000 kg/m2; dynamic viscosity 0.001 Pa-s) flows steadily through a horizontal, st...
Question 3 [20 marks] Water (density p1000 kg/m2; dynamic viscosity 0.001 Pa-s) flows steadily through a horizontal, straight pipe with circular cross section of diameter D=0.2 m. The volumetric flow rate is 0.01 m°/s. Argue that this is turbulent flow. [4 marksl а. Pressure drop in the pipe is due to friction. The pressure drop per unit length can be written as Др 4f L with U the average velocity in the pipe and fthe friction factor. Given the pipe...
Water is flowing vertically upward through a brass pipe. It then flows through a 90 degree...
Water is flowing vertically upward through a brass pipe. It then flows through a 90 degree elbow, changing direction from flowing vertically, to flowing horizontally at which point it eventually ejects to atmosphere in the horizontal direction (at the outlet). The entire brass pipe assembly is firmly fixed at its base to a wall. You may take the "inlet" to be at a point where the pipe attaches to the base plate and the water is still flowing vertically. Which...
Water flows at 3000 Cm3/s through a sudden enlargement from 50mm to 60 mm diameter pipe....
Water flows at 3000 Cm3/s through a sudden enlargement from 50mm to 60 mm diameter pipe. Calculate the pressure drop. Density of water =1000 Kg/m3. Select one: a. 106.7 N/m2 O b. 108.9 N/m2 0 C. 102.8 N/m2 O d. 100.6 N/m2 e. 103.4 N/m2
Problem 3 (30): Steam at Too,1 340 °C flows in a cast iron pipe [k- 80 W/m.°C] whose inner and outer diameter are Di 6 cm and D2 -8 cm, respectively. The pipe is covered with a 4-cm thick glass wool...
Problem 3 (30): Steam at Too,1 340 °C flows in a cast iron pipe [k- 80 W/m.°C] whose inner and outer diameter are Di 6 cm and D2 -8 cm, respectively. The pipe is covered with a 4-cm thick glass wool insulation [k-0.05 W/ m°C]. Heat is lost to the surroundings at Too,2 - 21°C by natural convection and radiation, with a combined heat transfer coefficient of h- 18 W/m2 °C. Taking the heat transfer coefficient inside the pipe to...
A 7.5-cm-diameter horizontal pipe gradually narrows to 5.0 cm . When water flows through this pipe...
A 7.5-cm-diameter horizontal pipe gradually narrows to 5.0 cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 31.0 kPa and 25.0 kPa , respectively. What is the volume rate of flow? Q= ____ m^3/s Please explain step by step.
H2.3 Consider water at 20°C flowing through a horizontal pipe of diameter 15 cm and length 10 m. The flowrate is 0.021 m3/s and the wall shear stress is 5.76 N/m2. Assume fully developed flow. a. Verify that the flow is turbulent b. Determine the pressure drop [N/m2 c. Estimate the viscous sublayer thickness [mm], i.e., where y+ 5 d. Compare results of part c. with typical pipe roughness (see Table 8.1 in text and comment on implication e. Using...
Water flows with mass flow rate 0.0566kg/s through a pipe with diameter 30mm and length 600m. Find the pressure drop across the pipe if the friction factor is 8/Re, Density of water=1000Kg/m3 and the viscosity of water=0.0018Ns/m2 Select one: a. 3072 N/m2 O b. 3101 N/m2 0 c. 3111 N/m2 O d. 3001 N/m2 e. 3022 N/m2
Q2 A 200 mm diameter cast iron pipe with wall thickness of 15 mm is carrying water when the outlet is suddenly closed. Calculate the maximmum discharge if the pressure rise is not to exceed 180 kN/m2 (a) assuming the pipe is rigid; (b) allowing for hoop stress but not longitudinal stress in the pipe wall; (c) assuming the pipe to have expansion joints throughout its length. (K-2.1 × 109 N/m 2, E 100x 109 N/m2)
Q2 A 200 mm...
Water flows at speed of 6 m/s through a horizontal pipe of
diameter 3.5 cm. The gauge pressure P1 of the water in the pipe is
1.7 atm. A short segment of the pipe is constricted to a smaller
diameter of 2.4 cm .
What is the gauge pressure of the water flowing through the
constricted segment? Atmospheric pressure is 1.013 × 10^5 Pa. The
density of water is 1000 kg/m^3 . The viscosity of water is
negligible. Answer in...
5.16. Water is flowing in a 3-cm-diameter pipe at an average velocity of Uav 2 m/s. Assuming water density of ρ-1000 kg/m 3 and viscosity μ-10-3 N s'm2, calculate the velocity at the center of the pipe, the shear τ at the wall, and the Reynolds number. Assuming laminar flow, calculate friction coefficient C and pressure drop dp/dx.
Question 3 [20 marks] Water (density p1000 kg/m2; dynamic viscosity 0.001 Pa-s) flows steadily through a horizontal, straight pipe with circular cross section of diameter D=0.2 m. The volumetric flow rate is 0.01 m°/s. Argue that this is turbulent flow. [4 marksl а. Pressure drop in the pipe is due to friction. The pressure drop per unit length can be written as Др 4f L with U the average velocity in the pipe and fthe friction factor. Given the pipe...
Water is flowing vertically upward through a brass pipe. It then flows through a 90 degree elbow, changing direction from flowing vertically, to flowing horizontally at which point it eventually ejects to atmosphere in the horizontal direction (at the outlet). The entire brass pipe assembly is firmly fixed at its base to a wall. You may take the "inlet" to be at a point where the pipe attaches to the base plate and the water is still flowing vertically. Which...
Water flows at 3000 Cm3/s through a sudden enlargement from 50mm to 60 mm diameter pipe. Calculate the pressure drop. Density of water =1000 Kg/m3. Select one: a. 106.7 N/m2 O b. 108.9 N/m2 0 C. 102.8 N/m2 O d. 100.6 N/m2 e. 103.4 N/m2
Problem 3 (30): Steam at Too,1 340 °C flows in a cast iron pipe [k- 80 W/m.°C] whose inner and outer diameter are Di 6 cm and D2 -8 cm, respectively. The pipe is covered with a 4-cm thick glass wool insulation [k-0.05 W/ m°C]. Heat is lost to the surroundings at Too,2 - 21°C by natural convection and radiation, with a combined heat transfer coefficient of h- 18 W/m2 °C. Taking the heat transfer coefficient inside the pipe to...
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