d integral meaning in English
d积分
Examples
- In the next part , after verifying the simplified computational method of turbulence , the movement of fibers in turbulent pipe flow was simulated by 3 - d integral method and simplified computational method of turbulence . it was found that the fluctuation of turbulence caused random of fibers " orientation and its distribution became broader as the re numbers increased
然后，在验证了湍流的简化方法的合理性后，利用三维分段计算方法和湍流简化方法模拟了大量纤维粒子在管道湍流内的运动，得出的结果为：湍流的脉动速度导致了纤维的偏角趋于无序，且随着re数的增加，纤维偏角的分布越来越趋于均匀。 - Firstly , when the pipe flow was laminar , the movement of fibers was computed in the 2 - d force formulae that were deduced from the slender body theory and in 3 - d integral method . results revealed that angles between fibers " axis and the orientation of flow would concentrate gradually on a low number as the re numbers increased . that is , the axis of fibers would rotate toward the orientation of flow
首先，当管道内流动为层流时，分别利用从细长体理论出发得出的纤维二维受力公式和三维分段积分计算方法模拟了大量纤维在流场中的运动，然后在最终时刻统计了纤维的偏角分布，并得出相同的结果：随着re数的增加，纤维粒子的偏角逐渐集中于小角度，即纤维轴线方向越来越集中于流向，此结果与实验吻合较好。