Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
The West Middle Cheliff watershed is located in the north-west of Algeria. It has an enormous potential alluvial groundwater and belongs to three sub-watersheds named: Wadi Ras Ouahrane, Wadi Sly and Wadi Cheliff Ouarizane. The Sidi Yakoub dam water releases on Wadi Sly for agricultural purposes have influence on the wadi flow and on the piezometric groundwater outside the flood seasons. The study region piezometric fluctuations of both time and space allows showing a general groundwater flow direction from East to West and in the South from Wadi Sly to the centre, suggests a connection of groundwater recharge by Sidi Yakoub releases. To these effects, it is undoubtedly a piezometric dome appearance on the wadi Sly left bank and water concentrations become diluted in the low water period of 2015.
Enlargement of the channel dimension is difficult to build in a land of densely residential buildings. Therefore, some open channels are only possible to be built holes’ intakes. In some studies, hole intake was building in the channel wall. This study researched a circular hole intake built at the bottom of an open channel at ten small slopes variation and three variations of the diameter of the hole’s intakes based on flume experiments. The purpose of this research was found a new simple equation to found the coefficient discharge value of a hole intake at the bottom of the channel based on the flume experiment of the variables that were estimated to has the most influence on this discharge coefficient parameter. So it can make it easier to calculate or find the discharge value of hole intake at the bottom of the open channel. Methods of data analysis used the linear regression graph and the multiple linear regression graph. The first result obtained four variables that affected the coefficient of discharge value of the circular hole intakes at the bottom of an open channel, namely a cross-section area channel, an area of hole intake, channel slope, and Froude numbers. Then other result obtained precision percentage for the discharge value of hole intake from the calculation used the new equation of the discharge coefficient compared with the discharge value of hole intake from manual measurement was 99.23%.
