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HIDRAULIKA SALURAN TERBUKA Kuliah ke-9

Reference: Open Channel Hydraulics – Tery W. Sturm Open Channel Flow - M. Hanif Chaudhry The Hydraulics of Open Channel Flow: An Introduction - Hubert Chanson

Soal-Soal Latihan 1. Sketch the water-surface profiles in the channel system of Figure below. In this figure, NDL and CDL denote normal- and criticaldepth lines, respectively.

Soal-Soal Latihan

Soal-Soal Latihan 2. Sketch the water surface profiles in the channels shown in Figure below.

Soal-Soal Latihan 3. Sketch the water surface profiles in the channels shown in Figure below.

Soal-Soal Latihan 4. Sketch the water surface profiles in the channels shown in Figure below.

Soal-Soal Latihan 5. a. If a sluice gate is used to control flow from a lake, should a gate be located near or at a long distance from the lake outlet. Why? b. If the gate is located at a long distance from the lake outlet, is there a situation in which the outflow from the lake does not depend upon the gate opening. c. Sketch all possible flow situations assuming the channelbottom slope to be i. mild; ii. steep.

Soal-Soal Latihan 6. Lakes A and B are connected by a 10-m wide rectangular channel, as shown in Fig. below. If n for the flow surfaces is 0.013, sketch the water-surface profile in the channel if the water level in Lake B is at i. El. 155.0 ii. El. 161.0.

Soal-Soal Latihan 7. A 15-m wide, 15-km long, concrete-line channel (n = 0.013) is planned for conveying water from reservoir X to reservoir Y. The water level in reservoir X is at El. 129.65 m and the level of the channel bottom at the entrance is at El. 121.4 m. Determine the channel discharge and sketch and label the type of water-surface profile for the following two cases: 1. The slope of the channel bottom is 0.001 and the water level in reservoir is at El. 109 m. 2. The slope of the channel bottom is 0.008 and the water level in reservoir Y is at El. 7 m. Assume the entrance losses are negligible in both cases.

Soal-Soal Latihan 8. A 15-m wide, 15-km long, concrete-line channel (n = 0.013) is planned for conveying water from reservoir X to reservoir Y. The water level in reservoir X is at El. 129.65 m and the level of the channel bottom at the entrance is at El. 121.4 m. Determine the channel discharge and sketch and label the type of water-surface profile for the following two cases: 1. The slope of the channel bottom is 0.001 and the water level in reservoir is at El. 109 m. 2. The slope of the channel bottom is 0.008 and the water level in reservoir Y is at El. 7 m. Assume the entrance losses are negligible in both cases.