Water Resource Engineering CalPolyPomona This module contains three different parts. All the videos and all the notes should be completed before class. Part 1-Introduction to Open Channel Hydraulics Learning Objectives 1. Differentiate pressurized vs open channel hydraulics 2. Define open channel geometric terms. 3. Identify the different flow types when analyzing open channel hydraulics Pressure Pipe Vs Open Channel 1 1 EGL } hL Sf= EGL 1 } hf V12/2g V22/2g V12/2g V22/2g -HGL Sw = HGL Pi/y P2/Y d d2 So = Channel Bed Pipe Zı Z2 Z 1 1 22 1 2 1 2 1 Hydraulic Geometry Handout on Hydraulic Geometry Flow Type Part 2- Critical Depth and Specific Energy Learning Objectives 1. Define and calculate critical depth (dc) based on the Froude Number (Fr). 2. Define and calculate Specific Energy (E) within an open channel. 3. Define flow regime. Froude Number - Defines the Flow Behavior Short Cut for Rectangular Channel Energy Specific Energy Depth (d) - ft Energy (E) - ft Examples : You are given a trapizodal channel with a base width of 5 feet and side slopes of 3:1. If the actial depth is 1 ft and flowrate within the channel is 250cfs. Determine the flow regime and specific energy for the channel. Examples: You are given a trapizodal channel with a base width of 5 feet and side slopes of 3:1. If the actial depth is 1 ft and flowrate within the channel is 250cfs. Determine the critical depth and miminum energy.