本文關(guān)鍵詞： 三角形鼻坎 上緣出射角 下緣出射角 橫向脈動(dòng)流速 平均水深　出處：《水電能源科學(xué)》2017年04期 　論文類型：期刊論文

【摘要】：挑流消能是水電工程建設(shè)中廣泛采用的一種消能方式,挑流水舌上緣和下緣軌跡決定大壩下游的沖刷位置和范圍,而上緣和下緣出射角決定水舌的軌跡,因此出射角的研究至關(guān)重要。基于三角形鼻坎挑流的物理模型試驗(yàn)結(jié)果,研究挑流水舌起挑斷面橫向脈動(dòng)流速和平均水深對(duì)水舌出射角的影響。采用平均誤差最小的分析方法,分別確定脈動(dòng)流速和平均水深對(duì)出射角影響的權(quán)重系數(shù),并提出水舌上緣和下緣出射角的計(jì)算方法。相比試驗(yàn)實(shí)測(cè)值,所提方法計(jì)算所得挑距的誤差在5%以內(nèi),具有較高精度。
[Abstract]:Energy dissipation is a widely used energy dissipation method in hydropower construction. The trajectory of income's upper and lower edge determines the location and range of the downstream scour of the dam, and the angle of the upper and lower edge of the dam determines the trajectory of the water tongue. Based on the results of the physical model test of triangular nose ridges, the effects of the transverse pulsating velocity and the average water depth on the ejection angle of the tongue of income are studied. The analysis method with minimum average error is used. The weight coefficients of the influence of pulsating velocity and average water depth on the ejection angle are determined, and the calculation method of the ejection angle of the upper and lower edge of the water tongue is put forward. Compared with the experimental data, the error of the proposed method is less than 5%, which has a higher accuracy.
【作者單位】： 山西大學(xué)動(dòng)力工程系;
【基金】：山西大學(xué)第十四期本科生科研訓(xùn)練項(xiàng)目(2016014376)
【分類號(hào)】：TV653

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1 張海龍;吳文平;;窄縫挑坎出流水舌出射角的計(jì)算[J];西北水力發(fā)電;2007年01期

2 ;[J];;年期

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本文編號(hào)：1506716