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Velocity Measurements by the One-Orange Method

by B. A. Christensen, (M.ASCE), Univ of Florida, Gainesville, United States,



Document Type: Proceeding Paper

Part of: Fundamentals and Advancements in Hydraulic Measurements and Experimentation

Abstract:

Application of the most sophisticated instrumentation - so called state-of-the-art equipment - is not always necessary nor even desirable for measurement of mean velocities in verticals, discharges, bed shear stresses and other hydraulic parameters needed in sound engineering management of open channel flow. In many cases order of magnitude (or even more accurate) data may be generated by extremely simple and straight-forward means. For preliminary designs approximate values may very well suffice. Such a simple procedure based on the rising buoyant body method is introduced. The only tools needed are a slightly buoyant orange, a watch and measuring tape. A boat preferably with a fathometer is also desirable if the measurements cannot be accomplished by wading.

Subject Headings: Shear stress | Open channel flow | Management methods | Flow measurement | Water discharge measurement | Fluid velocity | Instrumentation

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