wall-friction loss 中文意思是什麼
wall-friction loss
解釋
器壁摩擦損失-
In order to improve the prediction accuracy, the sensitivities of pipe friction coefficients, pressure loss coefficients in bents, wall temperatures and heat transfer coefficients in pipes and cylinders on the volume efficiency are investigated
為提高充氣效率的計算精度，由模擬計算和相關試驗，分析了管道的摩擦系數、彎管的壓力損失系數、進氣管壁和氣缸壁溫度及其傳熱系數對充氣效率的影響程度。 -
The research result demonstrates that along with the increment of reynolds number, the root mean square value of outer fluctuating magnitude of the external diameter in fall frequency band increases, the root mean square value of fluctuating magnitude of the external diameter in high frequency band decreses, demonstrating that the fluctuation of flexible pipe wall changes fluctuation don field of original rigid pipe, large - size eddy motion increases and small - size eddy motion decreases, this reduces energy loss and increases friction reduction effectiveness
研究結果表明：隨著雷諾數的增加，全頻帶的外徑脈動的均方根值加大，但高頻帶外徑脈動的均方根值減小，說明柔性管管壁脈動確實改變了原剛性管的脈動流場，大尺度渦的運動加劇，低尺度渦運動減弱，從而使得能量損失減少，減阻效果增大。 -
At first, the soft of bridge structure, gqjs, is used to calculate the structure of prestressed concrete continuous beam bridge and the deformation and stress of the concrete box beam are given out ; then by measuring and analyzing the datum of the stress in the prestressed steel rope and the stress of section in the concrete box beam, this article presents two ways to identify the reasonable friction deviation factor k between longitudinal prestressed tendons and the wall of duct ( indirectly and directly ), and discover the regular pattern of prestressed friction loss
首先運用橋梁結構分析專用軟體gqjs對預應力混凝土連續梁橋進行結構計算，得到了各施工工況下混凝土箱梁的撓度和截面應力；然後給出了識別引起結構預應力損失的孔道偏差系數k的兩種方法（間接法和直接法） 。通過對測得的預應力索沿程應力和混凝土箱梁截面應力數據的分析處理，得到了合理的預應力孔道摩擦偏差系數及預應力摩阻損失規律。
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