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DOI Prefix 10.20431 |
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Assessment of Drainage Slope on the Manning Coarseness Coefficient in Mountain Areas
Nasrin Shojaei1,Mahmoud Shafaei-Bejestan2,Saeid Eslamian3,Maryam Marani-Barzani4,Vijay P.Singh5,Masoud Kazemi6,Kaveh Ostad-Ali-Askari7*
2.Full Professor, Department of Water Structure, Faculty of Water Engineering, Shahid Chamran University of Ahvaz. Iran.
3.Full Professor, Water Engineering Department, Isfahan University of Technology, Isfahan, Iran.
4.Department of Geography, University of Malaya (UM),50603 Kuala Lumpur, Malaysia.
5.Full Professor, Department of Biological and Agricultural Engineering &Zachry Department of Civil Engineering, Texas A and M University, 321 Scoates Hall, 2117 TAMU, College Station, Texas 77843-2117, U.S.A.
6.M.Sc. student of Civil Engineering, Civil Engineering Department, Najafabad Branch, Islamic Azad University, Iran.
7.Department of Civil Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Citation :Nasrin Shojaei,et.al, Assessment of Drainage Slope on the Manning Coarseness Coefficient in Mountain Areas International Journal of Constructive Research in Civil Engineering 2017,3(1) : 33-40
Determine the flow resistance parameters are important in hydraulic calculations of mountain area with steep slops. The purpose of this study is investigation the effect of slope, speed, depth and size of roughness on the manning roughness coefficient in this shallow stream region. This is an experimental study about manning roughness determined for mountain areas covered bye particles in three different sizes and three gradients for different hydraulic conditions in a flume of 8.3m long, 0.8m width and 0.5m height under bed slope of 0.0005. At the end of flow changes against the Manning roughness coefficient are shown, which includes above hydraulic parameters and discussed.