1. In the model test of a spillway the discharge & velocity of flow over the...
(c) A certain spillway for a dam is 20 m wide and is designed to carry 125 m/sec at flood stage. A 1:15 model is constructed to study the flow characteristics through the spillway. Determine the required model width and flow rate. What operating time for the model corresponds to a 24-hour period in the prototype? Neglect effects due to viscosity and surface tension. (2 + 2 + 2 = 6 marks) (d) What are distorted physical models? Use an...
Water flows over the spillway shown in figure. If the velocity is uniform at sections (1) and (2) and viscous effects are negligible, determine the flow rate per unit width of the spillway Z 3.6m = 1.0 m 2 2.8 m C2) 12) FIGURE P3.16R
Question 3 A chute spillway is placed across a 0.4m wide channel with 100 L/s discharge which creates 0.25 m and 0.05m upstream and downstream depths respectively. At what height hA should the top of a broad crested weir (C 1.60) be placed above the channel bottom, if a free jump is to be formed between the spillway and weir? (20 marks) 0.25m hA 0.05m Question 3 A chute spillway is placed across a 0.4m wide channel with 100 L/s...
Please, solve this question with solution steps without explanation P6.14 A spillway model is to be built to a geometrically similar scale of 1/50 across a flow of 600 mm width. The prototype is 15m high and maximum head on it is expected to be 1.5m. What height of model and what head on model should be used. [Hm=0.3 m) ii) If flow over the model for a particular head is 12 Us what flow per meter width at prototype...
A sectional model of a spillway 2 ft high is placed in a laboratory flume of 9-in width. Under a head of 0.34S ft the flow is 0,62 cfs. What fow does this represent in the prototype if the scale model is 1:20 and the spillway is 700 ft long? 4.
Fluid Mechanics 2. A homologous model of a centrifugal pump runs at 500 rpm against a head of 7m, drawing4 kW of power. If a prototype, 6 times the size of the model is to develop a head of 36m, and the overall efficiency of the model and prototype is 0.75 and 0.8 respectively, determine the rotational speed, discharge and power. (10 marks]
1. A rectangular channel is given with a width of B = 8.20m and an uniform flow depth of y = 13.62 m. The flow velocity is given as V = 8 m/s. a. Calculate the scales for discharge, time and force for a model of the channel at the scale of 1:12. b. Calculate the prototype hydrodynamic force acting on a pile of a bridge located in the channel if the force in the model is measured as F...
Design an ogee spillway with the following data: (i) Height of spillway crest above river bed 100 m (ii) Design discharge 12,000 cumecs (iii) Number of spans 6 (iv) Clear distance between piers 15 m (v) Thickness of pier 3 m Slope of d/s face of the overflow section 0.8:1 Assume any other data if required. Design an ogee spillway with the following data: (i) Height of spillway crest above river bed 100 m (ii) Design discharge 12,000 cumecs (iii)...
QUESTION:2 PLEASE MAKE SURE NO MISTAKES ARE MADE IN THE CALCULATIONS. Assume two-dimensional flow and complete the flow net in Fig 1 and compute: a) rate of flow in cubic meter/day if the spillway is 15 m wide b) pore water pressure at point A c) Compute and plot the distribution of pore water pressure at the base of the concrete spillway (.e. along the line C-D) If necessary, assume a suitable value for a parameter not given and dearly...
Q1. (a) For a flow phenomenon governed mainly by viscous forces, derive the scale factors for velocity, force and power in terms of 24, , and I, where subscripts L, p and u are length, density and dynamic viscosity respectively and is the ratio of the value of "x" in the prototype to the value of "x" in the model. [4 marks) (b) Volumetric flow rate (discharge) Q through a circular pipe with diameter D can be measured by measuring...