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- Clausing and Dayton discussed the gas flow patterns at the exit and entrance of cylindrical tubes while assuming a zero pressure at the tube exit. Clausing和Dayton在假设管道出口压力为零条件下,讨论了圆管出口和入口处的气流分布情况。
- There is no pressure gradient through the thickness of the film. 贯穿流体膜厚度无压力梯度。
- A number of overall correlations have been developed for the prediction of the pressure gradient in the vertical flow of gas-liquid mixtures. 为了预测气液混合物垂直流动的压力梯度,已经得出了许多整体相关规律。
- The experiment of single-phase flow through low permeability core shows that during fluid flow there exists start-up pressure gradient. 摘要低渗透岩心单相渗流实验表明,流体渗流时存在启动压力梯度。
- The static pressure gradient in cyclone air classifier can have influence on the test and measurement for its flow fields by five-hole probe. 用五孔探针测试旋流式气力分级机流场时,分级机内存在的静压梯度会对测试产生影响。
- The calculation results show that the pressure gradient decreases with the annular eccentricity increasing and increases with the flow rate increasing. 结果表明,压力梯度随环空偏心度的增大而减小,随流量的增大而增大。
- The colloidal solution formed under lower concentration conditions has zero free water and is with large volume fraction,the advantage of which is good deformational ability at low pressure gradient. 形变悬浮胶体聚合物是一种高弹性胶体颗粒,具有溶涨速度快、吸水性强、分散均匀、溶液无色透明的特点。
- The threshold pressure gradient of low permeability sandstone was studied experimentally by measuring the pressure attenuation in an unsteady seepage flow. 为了研究低渗透砂岩的启动压力梯度,设计了一种非稳态渗流中测量压力的试验方法。
- In addition, numerical simulations of turbulent flow over riblet surface are carried out in 7 kinds of pressure gradients.The effect of pressure gradient is analyzed. 同时还对7种压力梯度下沟槽表面流场进行模拟,研究了压力梯度对减阻效果的影响。
- However, studies have shown that flow in low permeability media does not follow Darcy's law, and that a starting pressure gradient (SPG) occurs in the percolation. 建立了低渗非达西渗流相对渗透率计算方法,导出了计算公式,并进行了非稳态流动实验。结果表明:在低渗油藏相对渗透率曲线中,束缚水和残余油饱和度较高,两相渗流区范围较窄;
- Time dependent calculation for a suddenly imposed pressure gradient has shown that variation of the cross sectional area reduces inertial effect in the contraction flow region. 压力差为阶跃变化的情况下数值计算结果说明了收缩部的断面积的时间变化减少了收缩部的惯性效果。
- The relationship between the wetted zone size and irrigation pressure was parabola, the maximum wetted zone volume was near the zero pressure. 湿润体大小与供水压力之间呈抛物线关系,在零压力附近湿润体体积最大。
- Mesoscale Nonhydrostatic and Hydrostatic Pressure Gradient Forces Theory. 中尺度非流体静力和流体静力气压梯度力理论。
- The smaller the permeability, the bigger the start-up pressure gradient. 渗透率越小,启动压力梯度越大。
- It includes concept of oceanic flow, geostrophic flow, wind flow, gradient flow, bottom friction flow, and unsteady flow. 需要6个学时。
- According to this,a simple gradient flow which preferes global translation is acquired by defining a new inner product on the set of perturbations of a curve. 根据此思想,通过定义在曲线扰动集合上的新内积空间导出了一种简单,具有平移优先的梯度流。
- All the results further verify the adaptability of the GAO-YONG turbulence model, without using empirical coefficients and wall functions, to real turbulent flow with pressure gradient. 通过与实验结果以及bl模型计算结果的比较,表明不需要任何经验系数及壁面函数的GAO-YONG不可压湍流模型方程组能够对有压力梯度的湍流流动做出更好的预测。
- The atmosphere pressure gradient is an inverse measure of the spacing of the isobars on a weather map. 气压梯度与天气图上等压线的间隔大小成反比。
- Modified Levy-Mangle and Dorodnitsyn-Howarth transformations are introduced tosolve the flow in the thin laminar boundary layer with no external pressure gradient on the smoothflat plate. 对于没有外部压力梯度的光滑平板,引进修正的Levy-Mangle变换和Dorodnitsyn-Howarth变换来求解薄层流边界层内的流动。
- Overpressurized zero pressure balloon system 超压零压气球系统