Introduction to Fluid Mechanics - PowerPoint PPT Presentation

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Introduction to Fluid Mechanics

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  1. Introduction to Fluid Mechanics Chapter 11 Open-Channel Flow

  2. Main Topics • Steady Uniform Flow • Specific Energy, Momentum Equation, and Specific Force • Steady, Gradually Varied Flow • Rapidly Varied Flow • Discharge Measurement

  3. Steady Uniform Flow • Control Volume

  4. Steady Uniform Flow • Chezy Equation • Chezy Coefficient

  5. Steady Uniform Flow • Manning Equation (SI) • Manning Equation (US Customary)

  6. Steady Uniform Flow • Manning Roughness Coefficients

  7. Specific Energy, Momentum Equation, and Specific Force • Specific Energy

  8. Specific Energy, Momentum Equation, and Specific Force • Froude Number Criterion • Froude Number Criterion (Rectangular Channel)

  9. Specific Energy, Momentum Equation, and Specific Force • Momentum Equation

  10. Specific Energy, Momentum Equation, and Specific Force • Momentum Equation (Steady State)

  11. Specific Energy, Momentum Equation, and Specific Force • Specific Force

  12. Specific Energy, Momentum Equation, and Specific Force • Critical Flow Examples

  13. Steady, Gradually Varied Flow • Differential Equation

  14. Rapidly Varied Flow • Example: Hydraulic Jump

  15. Rapidly Varied Flow • Hydraulic Jump (Continued)

  16. Discharge MeasurementUsing Weirs • Example (Sharp Crested Weir)

  17. Discharge MeasurementUsing Weirs • Suppressed Rectangular Weir • Contracted Rectangular Weir Effective Length

  18. Discharge MeasurementUsing Weirs • Triangular Weir

  19. Discharge MeasurementUsing Weirs • Broad-Crested Weir