1) quadratic pressure gradient
二次压力梯度
1.
Embarking from the mass conservation principle and the Darcy′s law, the flow equation of the elastic porous medium and the slightly compressible single phase fluid are deduced with the quadratic pressure gradient for constant compressibility and isothermal flow.
从质量守恒原理出发,结合达西定律,考虑恒压缩系数的弹性多孔介质和单相微可压缩液体的等温渗流过程,推导出了考虑二次压力梯度影响的渗流方程。
2) quadratic gradient
二次梯度
1.
According to the assumption of slightly compressible fluid,the quadratic gradient term in nonlinear partial differential equation of the traditional well test models for liquid flow is usually neglected.
在传统试井模型的非线性偏微分方程中根据弱可压缩流体的假设,忽略了二次梯度项,对于低渗透油藏这种方法是有疑问的。
2.
According to assumption of slightly compressible fluid, the quadratic gradient term in nonlinear partial differential equation is usually neglected.
在非线性偏微分方程中根据弱可压缩液体的假设忽略了二次梯度项，对于混气石油和低渗透储层这种方法是有疑问的，我们已经知道在试井较长时间忽略二次梯度项将产生误差。
3) Pressure Gradient
压力梯度
1.
Calculation for pressure gradients of two-phase flow for steam injection in thermal production wells;
热采井注蒸汽过程两相流压力梯度计算方法
2.
A convenient model of pressure gradient calculation of gas-liquid slug flow in vertical wellbore;
垂直井筒气液段塞流压力梯度的简便算法
3.
Predicting pressure gradient of fluid in oil tubing on the condition of continuous gas-lift;
连续气举条件下举液管柱内流体的压力梯度预测
4) pressure gradients
压力梯度
1.
The influence of main flow nonparallel and pressure gradients is considered to show the physical characteristics of flat boundary flow.
为更好反映平板边界层流动的物理特征和本质,该文同时考虑到主流的非平行性和压力梯度的作用。
2.
By using the method of direct numerical simulation, the coherent structures in the wall region of a turbulent boundary layer with either steady or changing pressure gradients were studied.
采用共振三波的一个周期作为湍流边界层近壁区相干结构的初值 ,用直接数值模拟方法对有压力梯度 ,包括定常压力梯度和变压力梯度作用下相干结构的演化进行了研究 ,得出其各种特性的变化与实验观测到的结果一致。
3.
The air pressure gradients of measured points in the shelter are calculated by mathematicsimulation.
介绍了对防空洞的温度、湿度、风速、热舒适度等参量的实测结果并进行定性分析；确定出离洞口较远处的洞内温度随时间变化的规律及地面复盖层的导温系数；进行数学模拟，由欧拉公式确定压力梯度随位置变化的情况；对改善本地人防工程的热湿功能提出初步看法。
5) quadratic gradient term
二次梯度项
1.
According to the assumption of slightly compressible fluid,neglected the quadratic gradient term in nonlin- ear partial differential equation is usually lead to error.
在非线性偏微分方程中,根据弱可压缩液体的假设,忽略二次梯度项,在试井较长时间内将产生误差。
6) Quadratic-gradient term
二次梯度项
1.
The quadratic-gradient term was not neglected in this model,which results in more accurate conclusion.
针对缝洞型油藏提出了一种由基岩系统、裂缝系统及溶洞系统组成的三孔三渗数学模型,它考虑了井筒储集和表皮效应的影响,同时,在建立模型的时候没有忽略二次梯度项,使计算结果更加精确。
补充资料：压力梯度校正因子
分子式：
CAS号：
性质：又称压力校正因子。在气相色谱法中，用以校正在色谱柱中由于载气的可压缩性所产生的压力梯度的因子。
CAS号：
性质：又称压力校正因子。在气相色谱法中，用以校正在色谱柱中由于载气的可压缩性所产生的压力梯度的因子。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条