head loss of pipeline 中文意思是什麼
head loss of pipeline
解釋
管線水頭損失-
Actually, in the tube engineering, the proportion of the loss of local water head in the loss of pipeline water head is big
在實際管道工程中，閥門閥道的局部水頭損失占管路水頭損失的比例是相當大的。 -
Corresponding to the correct water hammer mathematic model ( 3 ), the character difference equation is by comparing the new mathematic model with the old mathematic model, the last calculative part of paper argues the falseness of the current water hammer mathematic model, makes use of the improved character line method to analyze the correct mathematic model ( 3 ), studies all kinds of facts " impact on water hammer pressure value and water hammer phenomenon attenuation, points out that, in the long pipeline system, the subarea calculation of head loss along with flow rather influences the calculative results of water hammer pressure, advices to take the subarea calculation of head loss along with flow into account in the water hammer calculation of the long pipeline system
對應于正確的水擊數學模型（ 3 ）的特徵差分方程形式如下c ，弓+吼川一c ，唱一幾弓扮幾rv另卜川= o幾代+吼川一幾唱一吼嶸{一c :腳丸}唱} ? 「本論文在最後的計算部分，通過對新老數學模型的數值計算比較，進一步論證了當前水擊數學模型的不正確性。並且應用改善了的特徵線法對正確的數學模型（ 3 ）進行了計算分析，研究了各種因素對水擊壓強值和水擊現象衰減的影響，指出在長管道系統中，沿程水頭損失的分區計算對水擊壓強的計算結果影響較大，建議在長管道系統的水擊計算中應按分區進行沿程水頭損失的計算。 -
Abstract : the function expression for coefficient of pipeline ' s local head loss was presented through optimizing fitting to coefficient values listed in tables. the fitting accuracy is acceptable
文摘:採用優化擬合法通過對圖表中有關數值的擬合，給出了管道閥件阻力系數的函數表達式，具有較高的擬合精度。 -
Ulteriorly, considering the local head loss in inlet opening and pipes junction plays more important role in the calculative results of water hammer pressure calculation of the short pipeline system
考慮進口及多管道連接處的局部水頭損失對短管道系統水擊壓強的計算結果影響較大。
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