Effects of flow rate, shrinkage ratio and sediment content on head loss in triangular central measuring tanks

• Published in: Guanʻgai paishui xuebao Vol. 44; no. 8; pp. 77 - 85
• Main Authors: YUAN Changcong, TAO Hongfei, GUO Xingchen, WANG Fuyou, MAHEMUJIANG·Aihemaiti, JIN Peng, LI Junbo
• Format: Journal Article
• Language: Chinese
• Published: Science Press 01.08.2025
• Subjects: triangular central measuring sink; head loss; range analysis; analysis of variance; dimensional analysis; predictive models
• ISSN: 1672-3317
• DOI: 10.13522/j.cnki.ggps.2024431

【Objective】The triangular central measuring tank is widely used in irrigation systems for flow measurement and sediment transport monitoring. However, head loss in the tank, influenced by hydraulic and sediment parameters, affects its measurement accuracy and energy efficiency. To improve design and operation of such tanks, this paper investigates the effects of flow rate, shrinkage ratio and sediment content on head loss and develops a predictive model for practical use. 【Method】 The experiments were conducted using six flow rates ranging from 0.031 to 0.093 m3/s, three shrinkage ratios ranging from 0.375 to 0.625, and five sediment concentrations ranging from 0.69 to 3.08 kg/m3. The experimental results were analyzed using the range analysis and the analysis of variance (ANOVA). A predictive model for the head loss was established using dimensional analysis.【Result】 The head loss increased with increasing flow rate and sediment content but decreased as the shrinkage ratio increased. Among the three factors,