Experimental Study on Flow over Triangular Labyrinth Weirs

Recently, many research studies have focused on labyrinth weirs' hydraulic performance, especially as dependent engineering features. In the current study, properties of flow over triangular weirs models (from upper perspective) with sharp crest been experimentally studied and compare their efficiency suppressed rectangular (conventional weirs). Twelve fiberglass are developed for this reason tested in a 6m length, 30cm width, 40cm height laboratory flume, nine were constructed three weirs, Three alternative heights (p=15, 20, 25cm) employed research, each height, vertex angle (θ) changed times (60օ, 90օ, 120օ), one these was used, seven different discharge approved. The overall tests study 84. dimensionless parameters which coefficient (Cd) is obtained using dimensional analysis. plotted. According to experimental present compared linear shown be more hydraulically efficient. Also, weir (P) has effects coefficient, where increased decreasing (P). weirs(θ) major influence raises when decreases value angle(θ), another means, gave an increase path flow, it 60o reached its greatest (2.55), followed by 90o 120o respectively. other words (a small gives length effective (Le) weir) leads capacity or performance weir.