Example 4: Water on a horizontal apron of a 100 ft wide spillway is shown below has a depth of 0.60 ft and a velocity of 18 ft/s. Determine: I. The depth, y2, after the jump, the Froude numbers before and after the jump, Fr, and Fr2, and II. The length of the hydraulic jump. b = width = 100 ft Spillway apron V2 Vị = 18 ft/s y, = 0.60 ft Downstream obstacles

Example 4: Water on a horizontal apron of a 100 ft wide spillway is shown below has a depth of 0.60 ft and a velocity of 18 ft/s. Determine: I. The depth, y2, after the jump, the Froude numbers before and after the jump, Fr, and Fr2, and II. The length of the hydraulic jump. b = width = 100 ft Spillway apron V2 Vị = 18 ft/s y, = 0.60 ft Downstream obstacles

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.14P

See similar textbooks

Similar questions

A) what is the number of drop of the flownet? B) What is the flow of water in the unit of cm^2/min? C) What is the water pressure, u, at point A? (Assume the water unit is 10 kN/m^3) D) What is the total head at point B/ E) What is the water pressure at point B? (Assume the water unit is 10 kN/m^3)
For the two-dimensional flow system shown below (units in meters):Compute the total flow rate under the Dam. X = 4, Y = 8. Note 1: Point A is located in the middle point of the equipotential lines. Point B is located in the middle point of the flow lines.Note 2: Assume e=0.8 (void ratio) and k=10^-3 cm/s (coeff. of permeability).Note 3: Datum is located at the bottom level of the water (right side of Dam).Note 4: Remember, the figure is drawn to scale. So, use the value of 2X+Y to estimate any dimension that you consider necessary.
2. A rectangular channel carrying water with a velocity of 5 m/s has a uniform depth of 1m. A) At what stage is the flow taking place? B) If a jump is possible, what is the depth after the jump?
Consider the steady open channel flow of water in the smooth constriction shown in plan view in Figure P10.46. At position 1, the depth is Y1, the width is B1 and the Froude number F1 = 4. A similar notation is used at positions 2, 3 and 4. A hydraulic jump is observed just downstream of position 2 where the Froude number F2 = 2. You may assume one-dimensional flow. (a) Find Y2, the depth at position 2, in terms of Y1. (b) Find Y3, the depth just downstream of the hydraulic jump, in terms of Y1. (c) Find F3, the Froude number just downstream of the hydraulic jump. (d) Find F4, the Froude number at the exit, given that Y3/Y4 = 1.2. (e) Find B4/B1.
A sluice gate flows into a horizontal channel as shown in the figure. Determine the flow through the gate per meter width when y=1.0m and d1=6m. Assume that the pressure distributions at section 1 and 2 to be atmospheric and neglect losses in the channel. Use coefficient of contraction Cc= .85 and coefficient of velocity is Cv=.95.
Refer to Problem 8.4. Using the flow net drawn, calculate the hydraulic uplift force at the base of the hydraulic structure per meter length ( measured along the axis of the structure).
The rectangular channel is 3 m wide and caries a flow of 10 m3/s. At the 3.5 m drop, water is at the critical depth. Downstream of the drop, the depth = 2 m after the hydraulic jump. The head loss due to the jump = 2 m. (a) What is the depth of water before the jump? Note that the depth you calculate must be in the supercritical range. (b) What is the head loss due to the 2.5 m drop?
11. A channel runs almost parallel to a river as shown in the figure. The water level in the river has an elevation of 36 m. and the elevation of the channel is 33 m. The river and channel are 600 m apart and a previous formation of the average thickness of 9 m and hydraulic conductivity of 0.80 m/hr joints them together. Compute the hydraulic gradient Compute the rate of seepage flow from the river to the channel per meter width in liters per day. If the seepage velocity is 0.048 m/day, compute the void ratio of the previous medium.
1. Which of the following least affects hydraulic gradient or slope of HGL? A. PIPE LENGTHB. PIPE DIAMETERC. TYPE OF PIPED. FLOE RATE 2. In laminar flow, which is correct?BJ: higher Re value has higher friction factorJB: lower Re value has lower friction factorGroup of answer choices A. BJ is false and JB is true B. BJ is false and JB is false C. BJ is true and JB is false D. BJ is true and JB is true 3. In a system with 4 reservoirs and 2 pipe junctions, how many continuity equations are formulate? A. 3B. 2C. 1D. 4E. 5
Determine the critical depth for best hydraulic cross-section of a trapezoidal channel that carries a flow of 6.5 m³/ s. Note: For Best Hydraulic Cross-Section; T = 2 z where T – top width and z-side length, and R = y/2.
Suppose that a stable hydraulic jump forms between the two sluice gates shown in Figure 5.15. If the flow depth downstream of a sluice gate is 61% of the gate opening (yg), determine the downstream gate opening (yg2) for the following conditions: y1 = 0.61 m, Q = 15 m3/s, b = 5 m. (Hint. Assume no loss of energy through a sluice gate.)
For a given dam in the figure below,(A) Compute the flow rate q under the dam(B) Compute the water pressures at the heel (A) and toe (B) sections of the dam base Assume Nf = 3 and Nd=8