A soil has an effective diameter of 0.36mm. At which hydraulic gradient does the flow start...
A soil has an effective diameter of 0.36mm. At which hydraulic gradient does the flow start to become partly turbulent. Note: Use as transition Re=1.
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A soil has an effective diameter of 0.36mm. At which hydraulic
gradient does the flow start...
12. What is the hydraulic head made of in unsaturated subsurface flow? Circle all that apply....
12. What is the hydraulic head made of in unsaturated subsurface flow? Circle all that apply. a) Capillary pressure head b) Velocity head e) Elevation head d) Hydrostatic pressure head e) Nonhydrostatic pressure head 13. What is the hydraulic head made of in saturated groundwater flow? a) Capillary pressure head b) Velocity head c) Elevation head d) Hydrostatic pressure head e) Nonhydrostatic pressure head 14. What does the curve number (CN) represent in the SCS method for rainfall abstraction? Circle...
2. A cylindrical sample of soil is confined in a rigid-wall permeameter and measures 10 cm...
2. A cylindrical sample of soil is confined in a rigid-wall permeameter and measures 10 cm in diameter and 20 cm in length. The axis of the cylindrical sample lies in a horizontal plane. They hydraulic head at the left end of the specimen is controlled by a reservoir; the water surface in the reservoir is exactly 100 cm above the horizontal axis of the cylindrical soil sample and remains at 100 cm through a system that automatically adds water...
(40 points) Engine oil flows at a rate of 1 kg/s through a 5-mm diameter smooth straight tube. Th...
(40 points) Engine oil flows at a rate of 1 kg/s through a 5-mm diameter smooth straight tube. The oil has an inlet temperature of 47°C and it is desired to heat the oil to a mean temperature of 87°C at the exit of the tube. The surface of the tube is maintained at 150°C. Assuming the flow is fully developed both hydrodynamically and thermally, determine the required length of the tube. Note: by calculating Reynolds number at the entrance...
1. Determining fluid flow through pipes and tubes has great relevance in many areas of engineerin...
1. Determining fluid flow through pipes and tubes has great relevance in many areas of engineerin gase g and science. In engineering, typical applications include the flow of liquids and s through pipelines and cooling systems. Scientists are interested in topics ranging from flow in blood vessels to nutrient transmission through a plant's vascular system. The resistance to flow in such conduits is parameterized by a dimensionless number called the friction factor. For turbulent flow, the Colebrook Equation provides a...
5. A geometric series gradient has a positive cash flow of $1,000 at EOY 1, and...
5. A geometric series gradient has a positive cash flow of $1,000 at EOY 1, and it increases 5% per year for the following 5 years. Another geometric gradient has a positive value of $2,000 at the EOY 1, and it decreases 6% per year for years two through five. If the annual interest rate is 10%, which geometric series gradient would you prefer? (4.12)
Name: 12. Which of the following represents the correct standard proctor test procedure? a. 3 soil...
Name: 12. Which of the following represents the correct standard proctor test procedure? a. 3 soil layers, with 30 blows per layer using a 5.5 lb hammer dropped a distance of 12 inches b. 3 soil layers, with 25 blows per layer using a 10 lb hammer dropped a distance of 12 inches c. 5 soll layers, with 30 blows per loyer using a 10 lb hammer dropped a distance of 10 inches d. 3 soll layers, with 25 blows...
Answer All Please, really need it for exam. inwill like back [15) 3. Two lines of sheet pile walls are driven into a river bed to allow excavation of a trench. Water level in the trench is maintai...
Answer All Please, really need it for exam. inwill like
back
[15) 3. Two lines of sheet pile walls are driven into a river bed to allow excavation of a trench. Water level in the trench is maintained at the bottiom of the excavation (level C-F) by pumping Elevations are as follows: Impervious layer (level E-G; datum): Oft Soil surface (level B-B') Water level & soil level in trench (C-F): 40t Water level in river (A-A'): 75 t Tip of...
QUESTION 1 (T1) What is an adverse pressure gradient? (9.2) A. Where pressure increases with distance...
QUESTION 1 (T1) What is an adverse pressure gradient? (9.2) A. Where pressure increases with distance downstream O B. Where pressure decreases with distance downstream C. Where pressure is uniform in the flow D. Where pressure is pushing the iow downstream QUESTION 2 (T2) Where does an adverse pressure gradient occur on an airfoil? (9.2) O A. Leading edge O B. Near or after the point of maximum thickness O C.Only in a region where the boundary layer is turbulent...
A constant-head flow experiment is set up as shown. The soil is a saturated cylindrical silty...
A constant-head flow experiment is set
up as shown. The soil is a saturated cylindrical silty sand sample
extending between Points B and D. Hydraulic conductivity of the
sand is k = 1 x 10-3 cm/sec.
Using the datum shown, calculate the elevation head
he (cm), pressure head hp (cm), and total
head ht (cm) at Points A, B, C, D and E. Report your
answers in the table provided.
Calculate the flow (in cm3/hr) through the silty
sand assuming...
Design a concrete trapezoidal channel with best hydraulic cross-section that can handle the flow from the...
Design a concrete trapezoidal channel with best hydraulic cross-section that can handle the flow from the development above. The slope of the channel is 0.05. Describe the flow condition in the channel. 3. art ii-open books and notes (20 points each - use NRCS methods to solve these problems) A proposed 40 ha development in Jackson, Mississippi, includes 10 ha parking lot, 10 ha buildings, and the rest is grass area which includes 1 ha detention pond. The runoff from...
12. What is the hydraulic head made of in unsaturated subsurface flow? Circle all that apply. a) Capillary pressure head b) Velocity head e) Elevation head d) Hydrostatic pressure head e) Nonhydrostatic pressure head 13. What is the hydraulic head made of in saturated groundwater flow? a) Capillary pressure head b) Velocity head c) Elevation head d) Hydrostatic pressure head e) Nonhydrostatic pressure head 14. What does the curve number (CN) represent in the SCS method for rainfall abstraction? Circle...
(40 points) Engine oil flows at a rate of 1 kg/s through a 5-mm diameter smooth straight tube. The oil has an inlet temperature of 47°C and it is desired to heat the oil to a mean temperature of 87°C at the exit of the tube. The surface of the tube is maintained at 150°C. Assuming the flow is fully developed both hydrodynamically and thermally, determine the required length of the tube. Note: by calculating Reynolds number at the entrance...
1. Determining fluid flow through pipes and tubes has great relevance in many areas of engineerin gase g and science. In engineering, typical applications include the flow of liquids and s through pipelines and cooling systems. Scientists are interested in topics ranging from flow in blood vessels to nutrient transmission through a plant's vascular system. The resistance to flow in such conduits is parameterized by a dimensionless number called the friction factor. For turbulent flow, the Colebrook Equation provides a...
5. A geometric series gradient has a positive cash flow of $1,000 at EOY 1, and it increases 5% per year for the following 5 years. Another geometric gradient has a positive value of $2,000 at the EOY 1, and it decreases 6% per year for years two through five. If the annual interest rate is 10%, which geometric series gradient would you prefer? (4.12)
Name: 12. Which of the following represents the correct standard proctor test procedure? a. 3 soil layers, with 30 blows per layer using a 5.5 lb hammer dropped a distance of 12 inches b. 3 soil layers, with 25 blows per layer using a 10 lb hammer dropped a distance of 12 inches c. 5 soll layers, with 30 blows per loyer using a 10 lb hammer dropped a distance of 10 inches d. 3 soll layers, with 25 blows...
Answer All Please, really need it for exam. inwill like
back
[15) 3. Two lines of sheet pile walls are driven into a river bed to allow excavation of a trench. Water level in the trench is maintained at the bottiom of the excavation (level C-F) by pumping Elevations are as follows: Impervious layer (level E-G; datum): Oft Soil surface (level B-B') Water level & soil level in trench (C-F): 40t Water level in river (A-A'): 75 t Tip of...
QUESTION 1 (T1) What is an adverse pressure gradient? (9.2) A. Where pressure increases with distance downstream O B. Where pressure decreases with distance downstream C. Where pressure is uniform in the flow D. Where pressure is pushing the iow downstream QUESTION 2 (T2) Where does an adverse pressure gradient occur on an airfoil? (9.2) O A. Leading edge O B. Near or after the point of maximum thickness O C.Only in a region where the boundary layer is turbulent...
A constant-head flow experiment is set
up as shown. The soil is a saturated cylindrical silty sand sample
extending between Points B and D. Hydraulic conductivity of the
sand is k = 1 x 10-3 cm/sec.
Using the datum shown, calculate the elevation head
he (cm), pressure head hp (cm), and total
head ht (cm) at Points A, B, C, D and E. Report your
answers in the table provided.
Calculate the flow (in cm3/hr) through the silty
sand assuming...
Design a concrete trapezoidal channel with best hydraulic cross-section that can handle the flow from the development above. The slope of the channel is 0.05. Describe the flow condition in the channel. 3. art ii-open books and notes (20 points each - use NRCS methods to solve these problems) A proposed 40 ha development in Jackson, Mississippi, includes 10 ha parking lot, 10 ha buildings, and the rest is grass area which includes 1 ha detention pond. The runoff from...
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