Experimental Study of the Effect of Morphological Changes due to the Permeable Type Groyne Structuren

Abstract The shape of a narrow river with steep slope and high intensity rainfall can affect the speed flow so that it has an impact on changes in dynamics have potential to cause erosion riverbed. This condition affects morphological emergence degradation agradation phenomena certain areas. To determine effect changes, laboratory tests were carried out using permeable type groyne structure as obstacle reduce velocity. purpose this study was basic morphology by changing ratio distance, which is 60 cm 90 variations discharge channel slope. data required include velocity, depth, temperature scour volume. In addition, contours are drawn Surfer software. results showed there turbulent patterns use groynes, causing local around groynes revealed distance quite efficient reducing scour.