Sheet1 Data Sheet for Hydraulic Jump Experiment CS4002 Table 1 : For the computation of slopes XY SlopeCompute channel slopes from this table 2.50.809 50.838 7.50.874 Table 2 :V-notch Weir Test...

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Sheet1 Data Sheet for Hydraulic Jump Experiment CS4002 Table 1 : For the computation of slopes XY SlopeCompute channel slopes from this table 2.50.809 50.838 7.50.874 Table 2 :V-notch Weir Test Ho(mm)Hs(mm) Hw(mm) 1220325105Hw= Hs-Ho and use the V-notch dischrge equation to compute discharge 2220350130 Where, Ho is the measured height at the V-notch weir without flow Hs is the measured height at the v-notch weir with flow Hw is the water flow height given by (Hs-Ho) Table 3 : Mannings number determination Test Distance(M)Water Depth mm ) Width of flume mm) Use Manning's equation to obtaint mannig's coefficient. 1167.8103 368.7101Use the formula for Reynold's equation to obtain Reynolds Number corresponding to each distance. 566.895 766.3107 96999 2164.6103 385.4101 583.295 782.8107 986.999 Table 4 : Hydraulic Jump measurement Test Distance (m)water depth (y,mm) 10218.3 0.5214.4 1202.3 1.5195.4Using the standard step method, you can compute the hydraulic jump. 2186.3 2.5178.9 3176.6 3.5168.3 4161.6 4.5156.5 5150.2 5.5142.8 6127 6.566.8 766.5 7.566.5 867.6 20261.1 0.5252.2 1244.9 1.5238.3 2228.2 2.5222.8 3218.2 3.5213.6 4207.4 4.5200.7 5193.6 5.5187.4 6179.2 6.5169.6 7152.4 7.581.4 881.3 CS4002 Hydraulic Engineering Practical: May 2020 Flow profile and Hydraulic Jump experiment (10% of Subject mark) Since the laboratory activities cannot be conducted face to face at University due to COVID-19 restrictions, we have recorded a demonstration video explaining all the laboratory procedure. The video is almost 45 minutes in length, explains all the critical elements and contains instructions on computations procedure and the lab report. In addition, the Raw data is also supplied that can be used for all the necessary computations. Considering you are not getting an opportunity for face to face interaction, a sample computation document is also supplied which should help you for calculation and reporting. Objectives 1. Calculating the Manning's (n) coefficient value for the flume. 2. Create a hydraulic jump, classify the surface profile downstream and upstream and classify the hydraulic jump. 3. Calculate the Froude number for the flow upstream of the hydraulic jump and the Reynold’s number for the flow. 4. Compare the observed surface profile across the jump to values calculated using the standard step method. The procedure (lab work) 1. The horizontal and vertical height of the bed flume is measured in three places to obtain an average for the slope using a tape measure (table 1). 2. The width of the channel is measured for four points (table 3). 3. The tank of the V-notch weir must be full (without flow) and the reading of the water surface next to the V- notch is taken (table 2). 4. The upstream valve is opened and flow is set up with a completely opened sluice gate at the downstream 5. Another reading is taken at the V-notch weir for the new height of the water surface (table 2). 6. The depth of the flow is measured at locations 1, 3, 5, 7 and 9 meters from the downstream position. The data is used to calculate Manning’s coefficient (table 3). 7. Leaving the flow rate constant, the sluice gate is lowered, then a stationary hydraulic jump roughly midway along the flume should be created. 8. Water depths at 0.5 meter intervals are taken using the rolling pointer gauge (table 4). 9. Steps 4 - 7 were repeated for one more different flow rate. Instructions on Report The raw data required for all the necessary computations will be supplied through Learn JCU. Also all the formulas required for the computation is provided along with this instruction sheet. The report should contain following sections: 1. Title of the Experiment 2. Introduction: Includes the theoretical background of the experiments. 3. Aim and Objectives 4. Procedure: (for the lab work only) 5. Calculation and Results: This section must include the following components; • Flow rate measurements for both flow rates (Use the discharge equation) • Calculate the Reynold number (Re) • Calculate Manning’s coefficient: There is a single value of manning number obtained from the average of the five reading on the flume for each flow rate, and this value must be used for the calculation of the standard step method. • Calculate the theoretical water profile based on the standard step method • Plot water profiles using experimental data, and water profile using step method in one graph including the critical depth, normal depth, energy grade line (E), theoretical profile and experimental profile. Note: The main equations and calculation for at least one example should be provided in the report. 6. Discussion: This section should discuss the following aspects;  The experiment and the results  The detailed error investigation  The classification of the hydraulic jump and the classification of the flow profile before and after the jump.  The comparison of theoretical and experimental profiles of the Hydraulic Jump.  Discuss the variation on the energy grade line before and after the jump. 6. Conclusion 7. References The report length must be not more than 16 pages. The font size not less than 10. Use tables and figures in your report as much as possible. Table numbers and labels should be placed on the top of the tables, and figure numbers and labels should be placed under the figures. Number figures and tables consecutively in the order in which reference is first made to them in the text. Locate them after where they are first referenced. Grading criteria: The grading is based on following factors.  Explanation of the theoretical back ground (10%)  Accuracy of calculation (40%)  Discussion and analysis (40%)  Presentation (10%) Required equations and formulas required for calculations: Rectangular channel: Discharge (Q) = A.V Area = b.y Wetted perimeter Pw) = b+2y Classification of Hydraulic Jumps If you have any questions you can contact by e-mail: [email protected] or [email protected]. mailto:[email protected]