| 引用本文: | 原常聪,陶洪飞,郭星辰,等.三角形中央量水槽水头损失研究[J].灌溉排水学报,2025,44(8):77-85. |
| YUAN Changcong,TAO Hongfei,GUO Xingchen,et al.三角形中央量水槽水头损失研究[J].灌溉排水学报,2025,44(8):77-85. |
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| 摘要: |
| 【目的】探究流量、收缩比和含沙量对三角形中央量水槽水头损失的影响。【方法】开展6组流量（0.031~0.093 m3/s）、3组收缩比（0.375~0.625）和5组含沙量（0.69~3.08 kg/m3）物理试验，采用极差分析和方差分析对物理试验结果进行分析，运用量纲分析法建立水头损失预测模型。【结果】水头损失随收缩比的增大而减小，随流量的增大而增大，随含沙量的增大基本保持不变；收缩比对三角形中央量水槽水头损失的影响最为显著，其次是流量，含沙量对水头损失的影响不显著；建立了三角形中央量水槽水头损失预测模型，预测值与实测值的相对误差范围为-4.44%~5.41%，该模型可对三角形中央量水槽的水头损失进行较为准确的预测。【结论】揭示了三角形中央量水槽水头损失与流量、收缩比和含沙量的变化规律，对不同流量、收缩比和含沙量条件下三角形中央量水槽的水头损失进行了预测。 |
| 关键词: 三角形中央量水槽；水头损失；极差分析；方差分析；量纲分析；预测模型 |
| DOI：10.13522/j.cnki.ggps.2024431 |
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| Effects of flow rate, shrinkage ratio and sediment content on head loss in triangular central measuring tanks |
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YUAN Changcong, TAO Hongfei, GUO Xingchen, WANG Fuyou,
MAHEMUJIANG·Aihemaiti, JIN Peng, LI Junbo
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1. College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China;
2. Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Urumqi 830052, China;
3. Changji Water Conservancy Management Station (Santunhe River Basin Management Office), Changji 831100, China
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| Abstract: |
| 【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, the shrinkage ratio had the most significant impact on head loss, followed by flow rate, while sediment content had no significant effect on head loss. The proposed prediction model was accurate; the error between measured and predicted head loss ranged from -4.44% to 5.41%. 【Conclusion】Our results established the dependence of head loss on flow rate, shrinkage ratio and sediment content in triangular central measuring tanks. The developed model can reliably predict head loss across a wide range of operational conditions, offering a guidance for hydraulic design and optimization of similar tanks under sediment-laden flow conditions. |
| Key words: triangular central measuring sink; head loss; range analysis; analysis of variance; dimensional analysis; predictive models |
