查询词典 discretization

A 3rd-Runge-Kutta-5th-WENO scheme is used in this study to get solution of the Level Set advection equation. A Projection method is used to solve the N-S equation, and different discretization schemes are presented. A TDMA algorithm is used to solve the energy equation. With the use of these methods, a numerical simulation of vapor-liquid two-phase flows during condensation with large density ratio has been successfully realized.

本文应用三阶Runge-Kutta－五阶WENO组合格式求解Level Set输运方程，应用投影法求解气－液两相流流场N-S方程，给出了不同投影法的具体格式，应用TDMA算法求解气－液两相流场的能量方程，成功实现了对大密度比气－液两相流冷凝流动问题的数值模拟。

Its discretization is based on spectral elements in space and central differences method in time. The numerical result, shows that this approximation has spectral accuracy in space and up to second-order in time.

该解法引入一阶Clayton-Engquist-Majda吸收边界条件，在空间上利用谱元方法，在时间上利用中心差分的积分方法得到波动方程的离散形式，并给出具体算例进行了验证。

We use the boundary integral method to simulate the spherically symmetric collapse of a cavitation bubble, a free-surface potential problem having analytical solution. Evolving error curves are given in the thesis, and the influences of various discretization methods on the accuracy and the stability are compared.

我们使用边界积分法模拟空化气泡的球对称溃灭，一个具有分析解的自由面势流问题，给出了计算误差的演化曲线，比较了各种数值离散法对精度和稳定性的影响。

By introducing the concept of"nihility point"and the method of"spherule bounding" in the algorithm, we have simply and effectively realized boundary discretization in 3-D space.

这种算法采用"虚点"概念，按照一定的规则用"小球跳跃法"简单而有效地实现了三维场域边界的三角形离散。

For convenience of finite element discretization and preserving symmetry of the stiffness matrix, approximation and symmetrization of the continuum equilibrium equations were conducted.

为了便于进行有限元离散化并保持总刚度矩阵的对称性对连续介质平衡方程进行了简化和对称化处理。

Since it is an inverse problem, numerical techniques, such as discretization of the integral into a system of linear equations, are necessary.

由于这是一个反问题，一些数字技术比如将积分离散化为一个线性方程组是必需的。

Based on theory of grey system and rough sets, a new discretization algorithm of continuous attributes in decision table is offered.

基于灰色系统和粗糙集的有关理论，提出了一种新的基于属性重要性的离散化算法。

In terms of Navier-Stokes equations and LES model, the SIMPLEC algorithm with the body-fitted coordinate and tetrahedroid grid system is applied in the solution of the discretization governing equations.

本文基于N-S方程和大涡模拟模型，采用贴体坐标和四面体网格系统和SIMPLE算法，较准确地对混流式水轮机内部三维非稳定湍流流动及其尾水管内的旋涡压力脉动进行了数值模拟。

In terms of Navier-Stokes equations and LES model, the SIMPLEC algorithm with thebody-fitted coordinate and tetrahedroid grid system is applied in the solution of the discretization governing equations.

本文基于N-S方程和大涡模拟模型，采用贴体坐标和四面体网格系统和SIMPLE算法，较准确地对混流式水轮机内部三维非稳定湍流流动及其尾水管内的旋涡压力脉动进行了数值模拟。

The cyclic tridiagonal matrix method is adopted to solve the discretization equations. The circumferential cyclic boundary condition is implemented using the mutual replacement method.

同时，对圆周角方向的周期性用反复迭代方式来实现的方法提出了一种实施边界条件处理的方式，并比较了采用CTDMA方法与采用反复迭代法的收敛速度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。