'Flow depth' diaporamas de présentation

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CE 3372 Water Systems Design

CE 3372 Water Systems Design. Open Conduit Hydraulics - II. Flow in Open Conduits. Gradually Varied Flow Hydraulics Principles Resistance Equations Specific Energy Subcritical, critical, supercritical and normal flow. Description of Flow.

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CE 3372 Water Systems Design

CE 3372 Water Systems Design. Lecture 21: Hydraulics of open conduits gradually varied flow water surface profiles. Flow in Open Conduits. Gradually Varied Flow Hydraulics Principles Resistance Equations Specific Energy Subcritical, critical, supercritical and normal flow.

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CE 3372 Water Systems Design

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CE 3372 Water Systems Design

CE 3372 Water Systems Design. Open Conduit Hydraulics - I. Open Channels. Open channels are conduits whose upper boundary of flow is the liquid surface. Canals, streams, bayous, rivers are common examples of open channels.

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Granular Avalanche Modeling

Granular Avalanche Modeling. Methodology Working Group 2 October 2006. Atenquique, Mexico 1955. Atenquique, Mexico 1955. Volcan Colima, Mexico. San Bernardino Mountain: Waterman Canyon. Guinsaugon. Phillipines, 02/16/06.

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Erosion mechanisms in rain impacted flow and their effects and interactions P.I.A. Kinnell

Erosion mechanisms in rain impacted flow and their effects and interactions P.I.A. Kinnell University of Canberra Australia. Oral Paper 3995 European Geophysical Union General Assembly 2012. Soil Erosion.

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HIGHLIGHTS OF OPEN CHANNEL HYDRAULICS AND SEDIMENT TRANSPORT

HIGHLIGHTS OF OPEN CHANNEL HYDRAULICS AND SEDIMENT TRANSPORT. Dam at Hiram Falls on the Saco River near Hiram, Maine, USA. SIMPLIFICATION OF CHANNEL CROSS-SECTIONAL SHAPE.

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Open Channel Hydraulics

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Flow Over a Triangular Hump Weir (Specific Energy)

Flow Over a Triangular Hump Weir (Specific Energy). Total Energy Head. With the channel bed horizontal, the total energy head is given by. Critical Depth, y c. Level Channel. Level Channel. Depth Measurement Locations. Water Surface Profile. Flow Depth, y at Various Locations.

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Uniform Flow

Uniform Flow. Introduction. Flow depth does not change with distance is called uniform flow and corresponding depth is called the normal depth. (Chaudhry, 2008). Uniform Flow Features. The depth, water area, velocity and discharge at every section of the channel reach are constant.

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Channel Transitions

Channel Transitions. Channel transitions occur where there is a change in width, shape, slope, roughness, bottom elevation of the channel. For changes in slope and roughness we can use backwater curves to evaluate the effects of the changes.

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Computation of Gradually Varied Flow

Computation of Gradually Varied Flow. Introduction. We have covered sketching water surface profiles in channel qualitatively. Water surface profile calculations determine the water surface elevations along the channel length for a specified discharge.

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Gradually Varied Flow (2)

Gradually Varied Flow (2). Equations. Bottom slope Mild if (subcritical); Steep if (supercritical); and Critical if Mild and steep slopes (3 Zones); the rest slopes have only two regions

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OPEN CHANNEL HYDRAULICS

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Channel Design

Channel Design. Most Efficient Hydraulic Section. Most efficient Hydraulic Section. A section that gives maximum section factor, for a specified flow area, is called the most efficient hydraulic section or best hydraulic section. Most efficient Hydraulic Section.

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Standard Step Method

Standard Step Method. Standard Step Method. Direct Step method is not suitable if we want to determine the flow depth at specified locations or if the channel is non-prismatic (i.e., channel cross section and/or bottom slope vary with distance)

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Discharge from a Reservoir

Discharge from a Reservoir. Channel Cross section, entrance loess coefficient, , Manning, , and channel bottom slope, are needed to estimate the discharge, and flow depth, For the specified flow variables and channel parameters, the channel bottom slope may be classified as: Steep

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