Hydraulic_Hydrology_Engineering_Notes.pptx

This presentation is a review of Hydraulic and Hydrology Engineering, focusing on water resources and fluid applications in civil engineering. It covers the hydrological cycle, precipitation, infiltration, runoff, and hydrographs. Key hydraulic topics include open channel flow, Manning’s equation, and flood analysis.

Illustrations and diagrams are used to explain the hydrological cycle, flood hydrographs, and canal hydraulics. These slides are student-made academic notes (2025) designed for studying, reviewing, and preparing for civil engineering coursework and exams.

1. Hydraulic and Hydrology Engineering Study Notes - Civil Engineering 2025

2. Hydrological Cycle • Describes continuous movement of water on, above, and below the surface of the Earth. • Main processes: evaporation, condensation, precipitation, infiltration, runoff. • Fundamental for water resources engineering.

3. Precipitation and Runoff • Precipitation: rainfall, snow, hail contributing to water input. • Runoff: part of precipitation that flows on the ground surface. • Hydrographs show runoff variation with time.

4. Infiltration and Hydrographs • Infiltration: water entering soil surface. • Influenced by soil type, vegetation, and saturation. • Unit hydrograph method estimates runoff from rainfall events.

5. Flood Frequency Analysis • Statistical analysis to estimate flood magnitudes for given return periods. • Gumbel and Log-Pearson Type III distributions commonly used. • Important for floodplain and reservoir design.

6. Open Channel Flow • Governing equation: Manning’s equation, V = (1/n)R^(2/3)S^(1/2). • Flow classification: subcritical, critical, supercritical. • Hydraulic jump: sudden transition from supercritical to subcritical flow.

7. Hydraulic Structures • Dams and reservoirs: store water and control floods. • Spillways: allow excess water to be released safely. • Canals and gates used for irrigation and water distribution.

8. Illustrations Illustration examples: hydrological cycle diagram, flood hydrograph, canal cross-section with Manning’s equation.