查询词典 implicit difference scheme

Based on this, a new WENO difference scheme which based on Dispersion-Relation-Preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics problems has been implemented and compared in order to test capability of wave capturing; In addition, WENO schemes generally do not converge at high order in the presence of contact discontinuity of Euler equations, so a conservative front tracking technique coupling WENO schemes and Level Set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy.

本文研究了高阶精度加权基本无振荡格式及其在双曲守恒律方程中的应用，在此基础上作了两个方面的工作：一是针对高频声波问题构造出一种基于保色散关系的WENO有限差分格式，并对计算气动声学问题的代表性算例进行了大量数值实验，比较了该格式捕捉波数的能力；另外，针对高阶WENO格式在处理Euler方程的接触间断时精度有所降低的问题，研究了利用界面追踪技术Level Set方法和高阶激波捕捉WENO格式相结合的一种守恒追踪方法，并且给出有代表性的密度滑移面问题的算例，得到一致高阶精度的数值模拟结果。

In order to enhance reliability, this paper presents a new realization scheme. The scheme using current instantaneous value to detect the branch circuit which is serving, and the branch circuit permuted and combinated with recursion algorithm till the difference of each busbar balances.

针对这一问题，本文提出了一种新的自适应运行方案，使用电流瞬时值来检出有流支路，再利用递归算法算出两段平衡的小差，然后对两段小差不断进行平衡校验。

In this paper, based on the demand of enterprise, the design theory and method for blocking scheme of clamping fixture are further studied; the difference and similarity of under frame of railway freight wagon on structure and size are analyzed; the design system frame of blocking scheme for freight wagon under frame is constructed; the blocking design method for under frame assembly is generalized.

本文在企业需求的基础上，对夹具模块化方案设计理论和方法进行了深入的研究，大量分析了铁路货车底架组成在结构、尺寸上的差异及相似点，并对与之相对应的组对夹具进行了细致的研讨，构建了货车底架组对夹具模块化方案设计系统框架，总结出底架组对夹具的模块化设计方法。

They examined the Detroit " hotel broker priority " Work for the Dole scheme (through an employment agency for low-skilled unemployed to find the hotel brokers ), and then more job seekers joining the scheme, before and after accession, in income, hotel brokers during what difference there.

他们检视了底特律的「酒店经纪优先」以工代赈计划（透过职业介绍所，为低技能的失业者找酒店经纪），再比较参加计划的谋职者，加入之前与之后，在所得、酒店经纪期间上有什麼差异。

The difference between this scheme and others proxy multi-signatures was that no all original signers authorized the proxy signer who could sign a message on behalf of original signers.Only a part of original signers delegated their signing power to the proxy signer,and others signed by themselves.This scheme satisficed the need when part of original signers couldn't sign by themselves.

与一般的代理多重签名不同的是，一组原始签名人不是都将签名权授予指定的代理签名人，仅有一部分原始签名人授权，其余的是自己行使签名权，即实现了一组原始签名人只有部分成员不能行使签名权的要求。

The author systematically studies the construction principle of high order accuracy difference scheme and uses third-order accuracy Godunov scheme with TVD property to solve three-dimensional viscous flow field in cascade.

为了减少网格畸变对数值解的影响，发展了一种微分方程法与代数法相结合的网格生成方法。

For accelerating this problem's compute time in parallel computer, we use Saul'yev type asymmetric different scheme and classicality explicit-implicit type to get a new alternating group explicit method for solving diffusion equation.

为便于在并行计算机上计算以加快计算速度，现将第二类saul'yev非对称格式以及古典显、隐式相结合，构造了求解扩散方程的一类交替分组显格式，其基本结构为四点组，并针对内点为偶数的情况，在节点两端点处进行了处理，以提高精度。

By use of implicit scheme,exit and wall temperature varying with time in air-precooled heat exchanger for compound engine are extracted.

利用隐式格式，求得组合发动机空气预冷换热器随时间而变的出口及壁面温度。

There are explicit and implicit schemes in FDM . explicit scheme are easy to compute and make programmes, but it has a problem of conditional stability and the exactness is not high .

有限差分方法主要有，显式格式和隐式格式(Crank-Nicolson格式)，其中显式格式虽然计算简单，便于编程，但有稳定性限制，并且精度也比较低，不便于适用。

In calculation, the discretization of continuity equation is performed in accordance with semi-implicit Scharfetter-Gummel scheme and the electric field is solved by the current conservation instead of the Poisson's equation, so it saves plenty of time for calculation.

在计算中，对于粒子的连续性方程我们采用Scharferter和Gummel提出的有限差分方法，并用电流守恒方程代替泊松方程来求解电场，从而节省了大量的计算时间。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样