1) high-accuracy upwind scheme
高精度迎风差分格式
2) high accuracy generalied upwind scheme
高精度广义迎风格式
3) upwind difference scheme
迎风差分格式
1.
Using the theorems and extrapolation ideas,an extrapolation formula is constructed to improve the precision of the upwind difference scheme which is often used,and the precision is increased from O(τ+h) to O(τ2+h2),then an extrapolation method is given.
利用定理结合外推思想构造了一个外推公式,以改进常用的迎风差分格式的精度,使其精度由O(τ+h)提高到O(2τ+h2),最后给出了相应的外推算法。
2.
The problem is discretized using an upwind difference scheme on a Shishkin mesh.
在Shishkin网格上用简单迎风差分格式进行离散。
3.
By a coordinate transformation, the equation is solved with the upwind difference scheme on an equaldistant mesh.
该方程经过一坐标变换后,可以运用迎风差分格式在均匀网格上直接求解。
4) high order finite difference schemes
高精度差分格式
1.
Numerical simulation of gas-liquid two-phase stratified flow between two walls was performed by solving 2-dimention uncompressible Navier-Stokes equation and Level-Set equation using high order finite difference schemes.
采用高精度差分格式求解原始变量不可压缩Navier-Stokes方程和Level-Set方程,对二维的两壁面间的气液两相分层流动进行数值模拟,分析气、液雷诺数对界面的迁移、演化过程的影响。
6) second-order upwind difference scheme
二阶迎风差分格式
1.
The second-order upwind difference scheme is used to discretize the convection term in the model so as to eliminate numerical oscillation,and the central difference scheme is used to discretize the diffusion term.
用二阶迎风差分格式离散模型中的对流项以消除数值振荡,扩散项则采用中心差分格式离散。
补充资料：差分格式
差分格式
difference scheme
。尽of)中考虑.利用高速计算机解常微分方程和偏微分方程的典型差分格式的有效数值方法已经发展起来. 下面给出差分格式的一个简单例子.假设给定微分方程 。I，‘:卜a ox、u‘x卜汀‘x).) a(x))0 .0
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