查询词典 convolution equation

Assuming a condition cont-rol reserve calculation,combimatively solve the material balance equation of gas recovery and binomial gas recovery equation for gas well,calculate the production curve of gas well and match it with the actual production curve,finally determine the reserve and productivity parameter,this method doesn't need much pressure build-up data,and can calculate the c...

该方法的推导思路是：假设在某一控制储量条件下，联立求解气藏物质平衡方程式和气井二项式采气方程，计算气井采气曲线并将其与实际的采气曲线相匹配，最后确定储量、产能参数。该方法不需要较长的多次关井复压资料，在气藏受水驱影响较小时，还可计算一口探井或气藏试采早期所反映出的气井控制储量，在气藏生产中得到应用，计算结果较为可靠

After a careful solution of the movement equation of particles as well as the Klein-Gorden equation in curved space-time, and the analgesic continuation of out going wave in the complex number r plane, it reaches a conclusion that the radiation spectrum of black hole is rigorous black body radiation spectrum.

通过对弯曲时空中粒子的运动方程克莱因—高登方程的求解，并将出射波解在复平面做解析延拓，得出黑洞的辐射谱为严格的黑体辐射谱[1-2]。

It is a boundary value problem described by a third-order nonliear differential equation which is called the Blasius equation.

它是一个由三阶非线性微分方程描述的边值问题，其微分方程称为Blasius方程。

In the numerical simulation, the Blasius equation of boundary layer based on the Chebyshev interpolation points was solved by using of the Runge utta method with variable step. On the basis of the coordinate transformation of the boundary condition, the Chebyshev spectral method was applied to solve the hydrodynamic stability equation of boundary layer.

在数值模拟中，采用变步长的Runge Kutta方法，求解基于Chebyshev插值点的边界层Blasius方程，然后对边界条件进行坐标变换，使Chebyshev谱方法适用于边界层稳定性方程的求解。

Tridiagonal block matrix elemination and sweep algorithm is successfully applied to solve the large matrix involved; central difference method is supplemented to Houbolt method to form a time integration method with estimation and correction, to solve the time integration of second order implicit non-linear equation; simplification of system equation by decoupling between the physical coordinates x and y further improves the calculation accuracy and speed.

其中：成功地引入块三对角矩阵追赶法求解上述问题构成的大型矩阵；提出中心差分法+Houbolt法的预估计—校正时间积分法，以解决二阶隐式非线性方程的时间积分问题；系统方程在物理坐标x和y上的"解耦"简化，使计算速度和计算精度得以进一步的提高。

The derivation of the Navier-Stokes equation from Lattice Boltzmann equation is given in detail in this thesis.

本文给出了从格子玻尔兹曼方程出发到Navier-Stokes 方程的详细推导。

A model equation of the Boltzmann equation for binary gas mixtures is deduced in this article.

本文提出一种二元混合气体玻耳兹曼方程式的模型方程式。

It is impossible to describe this complex flow with a single method. Specially to transition flow, there is no suitable theory. The equation that fits it is Boltzmann equation, but the solution of it is almost impossible.

特别是对于过渡领域的流动，目前尚无完善的理论，与之相对应的数学方程是完全的Boltzmann方程，它是一个非常复杂的非线性的积分-微分方程，除了极其简单的情形，它的求解根本是不可能的。

The author suggests another model equation of the Boltzmann equation.

这种模型方程式可能在近似程度上有些改进。

For example, we investigate Maxwell equation and Boltzmann equation in the above spacetime and the new properties of plasma and the theory of the radio emission of pulsars in flat spacetime.

比如，较详细地讨论了平坦空间和弯曲空间的Maxwell方程和Boltzmann方程，平坦空间中等离子体的新特性以及中子星磁层的射电辐射理论。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。