流函数

The authors discuss a new numerical simulation method of the downburst wind loads on the basis of the previous research. Firstly, the wind speed is expressed as the sum of an instantaneous mean wind speed and an amplitude-modulating non-stationary fluctuating wind speed. Secondly, a new method based on the modified Osegguera and Bowles/Vicroy model to simulate the mean wind is presented and the fluctuating wind is simulated by a modified spectral representation method.

在将下击暴流风速表达为时变的平均风速和调制的非平稳脉动风速之和的前提下，本文采用基于改进的OBV模型Oseguera and Bowles/Vi-croy(OBV的方法来模拟平均风速，其平均风速直接由改进的OBV模型表达，而不同于已往研究中将平均风速表达为竖向风剖面与时间函数的乘积，并采用结合快速傅里叶变化的谐波叠加法来模拟调制的非平稳脉动风速。

The simulated climate fields were decomposed with the spherical harmonics function and the corresponding spectral analysis was made,thus the spherical harmonics feature of global 500 hPa height and the sea level pressure in several truncations was investigated and the field changes on doubling CO2 were analyzed too.

对模拟的气候场用球谐函数作波谱分析，得到了全球500hPa高度和海平面气压在不同截断时的波谱特征以及由CO2倍增(2×CO2)引起的流场变化。

The analysis is relatively simple due to the good approximation and the compact expression of the spline function.

由于样条函数有良好的逼近性及紧凑性，使得层合板在脉动流这种复杂荷载作用下的动力分析也相对简单。

The result shows that the reaction rate in loop reactor is better than in stirrer reactor.

在冷态模型装置上研究了环路反应器的流体力学特性和化学反应特性，建立了喷嘴喉部两相流的速度与喷嘴结构和操作压力的函数。

Phase-n Stream Function in the Velocity...

三种一般的多相流模型中的每一种都提供了一些你能画图和汇报的附加的场函数。

Generation of stream surface and interpolation function of vector field, the volume rendering of vector field based on 3D texture mapping.

矢量场基于质量守恒的流面、插值函数的构造及基于纹理的体绘制。3。

Then by fully using the different characteristics of the JPEG2000 bit stream packets, a target function is constructed, by which different protections are carried out for different packets according to their impacts on the quality of the reconstructed image.

其次，充分利用了JPEG2000的码流质量分级特点，建立了实用的目标函数，从而根据数据包对重建图像贡献的不同，实施不同的保护，以低复杂度的运算实现了码率优化分配的自适应过程。

It is equivalent to solve differential equation for under water explosion. The modes of velocity potential function and movable boundary are chosen, then, a variational equation system is derived by REDUCE procedure on computer.

在此基础上，选取了流场及运动边界的模态，将泛函对选定的自变函数变分，并取驻值；用REDUCE语言由计算机推出变分方程组。

The long-term seepage control effects of the surrounding rocks of the underground powerhouse are performed by a stationary seepage analysis method combining the variational inequality formulation of Signorini's type with an adaptive penalty Heaviside function to guarantee the numerical stability and convergence. Meanwhile, the difficulty in finite element mesh generation is reduced and the calculation time and modeling accuracy are balanced with a global model of equivalent modeling and a submodel of accurate modeling for drainage hole array.

为确保数值计算的稳定性和收敛性，采用Signorini型变分不等式和自适应罚函数相结合的稳定渗流分析方法，对厂房围岩的长期渗控效应进行计算分析；同时，采用基于等效模拟的整体模型分析和基于精细模拟的子模型分析相结合的方法，以减小有限元建模难度并协调计算量和计算精度之间的矛盾。

This model mainly depends on the smoothing effect of Gaussian function to create the edgeflow vector field.

该模型主要利用高斯函数的平滑作用产生边缘流场。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。