人民黄河
人民黃河
인민황하
Yellow River
2014年
8期
101-102,105
,共3页
短喉堰%自由出流%经验公式%流量测量
短喉堰%自由齣流%經驗公式%流量測量
단후언%자유출류%경험공식%류량측량
short throat flume%free outflow%empirical formula%flow measurement
灌区利用短喉堰测量流量日益增多，但尚没有应用范围较广的规范的自由出流流量系数计算公式。建立了三种喉颈与渠宽比的短喉堰试验模型，在自由出流情况下得到相关试验数据，并对自由出流流量系数进行一元回归分析，得到相关经验公式，对其计算结果进行误差分析，最大相对误差的绝对值均小于2％，满足精度要求，经验公式合理。
灌區利用短喉堰測量流量日益增多，但尚沒有應用範圍較廣的規範的自由齣流流量繫數計算公式。建立瞭三種喉頸與渠寬比的短喉堰試驗模型，在自由齣流情況下得到相關試驗數據，併對自由齣流流量繫數進行一元迴歸分析，得到相關經驗公式，對其計算結果進行誤差分析，最大相對誤差的絕對值均小于2％，滿足精度要求，經驗公式閤理。
관구이용단후언측량류량일익증다，단상몰유응용범위교엄적규범적자유출류류량계수계산공식。건립료삼충후경여거관비적단후언시험모형，재자유출류정황하득도상관시험수거，병대자유출류류량계수진행일원회귀분석，득도상관경험공식，대기계산결과진행오차분석，최대상대오차적절대치균소우2％，만족정도요구，경험공식합리。
The usage of short throat flume in measuring the flow is increasing in irrigation areas,but there is no proper and widely used calculation formula of flow coefficient under the conditions of free outflow. The experiment set up 3 kinds of experimental models of the ratio between the throat diameter and weir width,drew the relative experimental data under the conditions of free outflow,gave the monadic regressive analysis on free out-flow coefficient,got the relative empirical formula,and also carried out the error analysis on the results. The absolute value for the maximum rela-tive error was less than 2%,which met the accuracy requirements,and the empirical formula was reasonable.
