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Physical Modeling of Contracted Flow

by Jonathan K. Lee, US Geological Survey, MS, USA,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Experiments on steady flow over uniform grass roughness through centered single-opening contractions were conducted in the Flood Plain Simulation Facility at the U. S. Geological Survey's Gulf Coast Hydroscience Center near Bay St. Louis, Miss. The experimental series was designed to provide data for calibrating and verifying two-dimensional, vertically averaged surface-water flow models used to simulate flow through openings in highway embankments across inundated flood plains. Water-surface elevations, point velocities, and vertical velocity profiles were obtained at selected locations for design discharges ranging from 50 to 210 cfs. Examples of observed water-surface elevations and velocity magnitudes at basin cross-sections are presented.

Subject Headings: Traffic flow | Flow measurement | Velocity profile | Two-dimensional models | Hydrologic data | Fluid velocity | Flow simulation

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