如果取一个有旋的向量场，流体流动方向是环绕某个坐标轴的，那么就会发现它的散度是零。
And, if you take a vector field where maybe everything is rotating, a flow that's just rotating about some axis, then you'll find that its divergence is zero.
介绍一种在非交错网格上，求解非正交曲线坐标系下的流动控制方程的方法。
This paper presents numerical solution for governing equation of flows in curvilinear coordinate system with nonstaggered grids.
将有限差分法应用于流动方程及叶片方程的求解，采用贴体坐标系统处理边界条件。
The flow equations are solved using finite difference technique. Using body-fitted curvilinear coordinate system treats the boundary conditions.
研究一种新的全贴体的求解粘性不可压流体流动问题的非结构化直角坐标网格方法。
A novel body fitted numerical method with Cartesian coordinates for solving incompressible viscous fluid flow problems is studied.
在适体坐标系中采用有限差分法对错排圆管管片式换热芯子的三维层流流动及其换热特性进行了研究。
Under the body-fitted coordinates, a study of three-dimensional laminar flow and heat exchange characteristics of staggered round tube bank fin is carried out through finite difference method.
对存在自发凝结的湿蒸汽两相流动建立了完全欧拉坐标系下的数值模型。
Numerical simulation of expansion rate on two-phase wet steam flow with spontaneous condensation;
使用双极坐标系研究流体在偏心环空内的流动。
The bipolar coordinate system in which the two boundary circles of eccentric annuli become the coordinate surfaces is used.
在贴体坐标系中，采用有限差分法求解流动方程和叶片方程；
The flow equations are solved using finite difference technique. Using body-fitted curvilinear coordinate system treated the boundary conditions.
平砧锻造是塑性大变形问题，本文采用随动坐标系跟踪流动质点，利用能量法分步计算质点位移增量、等效应变场等，然后叠加。
To improve the accuracy of large floating point number calculatation, an iterative approach of inverse transformation for Gauss projection with floating coordinate system is presented.
首先对真实气体流动的数值模拟方法进行了研究，推导了任意曲线坐标系下真实气体流动控制方程雅克比（Jacobian）系数矩阵的特征向量矩阵和特征值；
Firstly, the eigen vector matrix and eigen value of Jacobian matrix of governing equations for the real gas flows in general curvilinear coordinate system are deduced.
以时间为横坐标及观察期BP和HR的变化为纵坐标计算气管插管后观察期血流动力学时-效关系曲线下面积（AUE）。
The areas under effect-time curve (AUE) of hemodynamics were calculated by time as X-axis and changes of BP and HR during the observation as Y-axis.
以时间为横坐标及观察期BP和HR的变化为纵坐标计算气管插管后观察期血流动力学时-效关系曲线下面积（AUE）。
The areas under effect-time curve (AUE) of hemodynamics were calculated by time as X-axis and changes of BP and HR during the observation as Y-axis.
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