Experimental and numerical study the effect of flow splitters on trapezoidal and triangular labyrinth weirs

Abstract

ABSTRACTNonlinear weirs are among the major structures used in water transfer. Thus, these structures have been the subject of various studies. This study investigates the effect of flow splitters on discharge performance of trapezoidal and triangular labyrinth weirs of one cycle. This study delves into the effects of flow splitters installed on the crest of trapezoidal and trapezoidal one-cycle labyrinth weirs using numerical methods (Flow-3D) and physical models. In the physical model, two, four, or six vanes were placed on the crest at regular intervals. The results showed that the triangular weir offered 4% higher efficiency than its trapezoidal counterpart and that the vanes had better effects on the trapezoidal weir. The vanes can improve the weir efficiency by up to 11%, and the discharge coefficient was found to be 10.2% higher in the numerical simulation than in the physical model.

Keywords

• Flow Splitter
• Flow-3D
• Labyrinth weir
• Discharge coefficient