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SETSCI - Volume (2018)
ISAS 2018 - Ist International Symposium on Innovative Approaches in Scientific Studies, Kemer-Antalya, Turkey, Apr 11, 2018

THE EFFECT OF BED ROUGHNESS ON ENERGY LOSS IN OPEN CHANNEL FLOWS (ISAS 2018_205)
Cahit Yerdelen1*, Selim Altun2, Cansu Özyaman3, Ş.O. Kağan Çapkın4, Eyüp Akçadağ5, Enis Yücel6, Perviz Ahmetzade7
1Civil Engineering Dept., Ege University  , İzmir, Turkey
2İnşaat Mühendisliği Bölümü, Ege Üniversitesi , İzmir, Turkey
3İnşaat Mühendisliği Bölümü, Ege Üniversitesi , İzmir, Turkey
4İnşaat Mühendisliği Bölümü, Ege Üniversitesi , İzmir, Turkey
5İnşaat Mühendisliği Bölümü, Ege Üniversitesi , İzmir, Turkey
6İnşaat Mühendisliği Bölümü, Ege Üniversitesi , İzmir, Turkey
7Civil Engineering Dept., Ege University  , İzmir, Turkey
* Corresponding author: cahit.yerdelen@ege.edu.tr
Published Date: 2018-06-23   |   Page (s): 232-232   |    70     4

ABSTRACT Open channel flow is defined as fluid flow with a free surface open to the atmosphere. One of the main sources of resistance in open channel flow is the roughness of channel bed. The roughness of channel base and side walls must be considered seperately investigating the the bed roughness. A series of experiments were carried out under laboratory conditions to examine base and side wall roughness. Roughness coefficient in open channel flow is usually represented by Manning coefficient. In this study a series of experiments were performed to calculate the Manning coefficients of different roughness elements in order to observe the effect of roughness forces on energy loss. Experiments are conducted in a rectangular laboratory channel in steady flow conditions. Different water depths were used at the same flowrates. Rougness elements were anchored to the base of the channel, side walls of the channel and both base and side walls of the channel in order to observe the side wall effect.  
KEYWORDS Open Channel Flow, Roughness Coefficient, Side Wall Effect
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