A sluice gate used to control the flow in a horizontal channel of unit width is shown in the figure. It is observed that the depth of flow is 1.0 m upstream of the gate, while the depth is 0.2 m downstream of the gate. Assuming a smooth flow transition across the sluice gate, i.e., without any energy loss, and the acceleration due to gravity as 10 m/s², the discharge (in m³/s, up to two decimal places) passing under the sluice gate is _________

GATE 2018 Civil Engineering Q48 — Civil Engineering

GATE 2018Set CombinedQ48NATanswer keyexplanation soonmedium

Civil Engineering · Fluid Mechanics - Open Channel Flow

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Figure from the original GATE 2018 paper. (IIT Guwahati archive)

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Fluid Mechanics - Open Channel Flow has appeared in GATE Civil Engineering 25 times across 9 years (2022, 2023, 2024, 2025, 2026, ...).

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sluice gateopen channel flowdischargefluid mechanics