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title

Experimental study of self-formed conversion in channels in threshold motion

Credit to Download: 1 | Page Numbers 8 | Abstract Views: 133
Year: 2015
COI code: IREC10_143
Paper Language: English

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Authors Experimental study of self-formed conversion in channels in threshold motion

  Ahmad Tahershamsi - Associate Professor. Faculty of Civil and Environment Engineering, Amirkabir University of Technology, Tehran, Iran,
  Masoume Nikfar - Master of science. Faculty of Civil and Environment Engineering, Amirkabir University of Technology, Tehran, Iran.

Abstract:

The purpose of this study is to find forms of a transition in threshold motion. To achieve this goal, a trapezoidal channel was built in the laboratory, so that a contraction transition becomes established. Materials of bed and banks are made of uniform sand with median diameter 1.2 mm. Critical shear stress was calculated, considering the properties of materials used in the bed and banks of the channel and then the threshold discharge was calculated. Water flows through this channel for long enough to produce a graceful type. The results showed that the created transition is similar to a semi-parabolic and hyperbolic transition. The difference between the developed transition and a semi-parabolic one is the least.

Keywords:

length of fully developed flow, shield’s diagram, threshold of motion, contraction transition

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https://www.civilica.com/Paper-IREC10-IREC10_143.html
COI code: IREC10_143

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Tahershamsi, Ahmad & Masoume Nikfar, 2015, Experimental study of self-formed conversion in channels in threshold motion, 10th International River Engineering Conference, اهواز, دانشگاه شهيد چمران اهواز, https://www.civilica.com/Paper-IREC10-IREC10_143.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Tahershamsi, Ahmad & Masoume Nikfar, 2015)
Second and more: (Tahershamsi & Nikfar, 2015)
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Type: state university
Paper No.: 19748
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