velocity-depth model

The calculation model of thin film evaporator ( TFE) was developed, the flow of water and viscous fluid was simulated using CFX 4.4 software and the velocity distribution was obtained.

建立了薄膜蒸发器的计算模型，采用大型计算流体力学（CFD）分析软件CFX4.4模拟了薄膜蒸发器内水及粘性料液的流动过程，得到了各种速度分布。

By this model, the turbulent mass transfer diffusivity, the three-dimensional velocity/ concentration profiles and the efficiency of chemical equipment can be predicted simultaneously.

使用这一模型可同时计算出湍流传质扩散系数、三维浓度场和速度场分布。

Two parameters of the crack dynamic propagation driving force, energy release rate and crack tip opening angle, are calculated by establishing a finite element model of the crack dynamic propagation in gas pipelines and considering the attenuation of the crack propagation velocity.

通过建立输气管道裂纹动态扩展的有限元模型，并在模拟计算中考虑裂纹扩展速度的衰减，分别计算了表征动态裂纹扩展驱动力的两项参数&能量释放率和裂纹尖端张开角；

The key of seismic data processing mainly lies in static corrections and imaging and both of them are relative to velocity model in complex near-surface and underground geologic structural conditions.

在复杂地表条件和复杂地质构造条件下，地震资料处理的关键主要表现为静校正和成像，而这两者均与速度模型有关。

Thinking about the importance of Pre-SDM to target layer imaging and the sensitivity of it to velocity-depth model, seismic workers have tumed their attention to migration velocity modeling in recent years.

考虑到叠前深度偏移对目的层成像的重要性和对速-深模型的敏感性，近年来，地震工作者已把注意力转移到偏移速度建模上。

Finally, an approach of ART is applied to a synthetic model with lateral heterogeneity, and the analog results of three-dimensional velocity distribution have been given.

最后提出对横向非均匀结构用层析技术的代数重建法（ART）进行成象，并给出了三维数值模拟结果。