数值

How to better simulate the advection and distribution of water substance has an important significance for the improvement of the numerical weather prediction, especially for precipitation.

如何更好地模拟水物质的平流和分布，对于数值天气预报效果的改进，特别是对于更好地模拟降水过程，具有重要的意义。

Finally, a numerical experiment was presented to discuss the effect of advection and nonlinear bottom stress to the warm water diffusion.

最后，利用数值试验，文章探讨了非线性底摩擦及平流项对温排水扩散的影响。

The second is that meshcan be fine as required for we have solved the conventional problem that the shell'smesh must be limited in notch.Moreover,the mesh size's significance to the resultsis displayed by calculation and compare of models with different mesh sizes.Besides,we have simulated the cloud-shaped field distribution of moving FAE Devices with adynamic program.The results can provide the elementary basis for structure designadapted to new launching conditions.

二是突破了传统的壳体网格划分只能沿刻槽的限制，使网格可以细化，并通过不同网格尺寸的模型计算与比较，显示了网格划分对结果的影响程度；此外，使用自行编制的动力学程序，对运动FAE装置云雾场分布规律做了简化的数值模拟，为工程部门提供了在新的发射条件下改进弹体结构设计的初步依据。

We studied the effect of particle impacting-angle on development of aeolian ripple s using numerical simulation method.

采用数值模拟的方法研究了沙粒冲击角对风成沙纹形成过程及其形态特征的影响。

Remarkable progress has been made in numerical simulation of aeolian ripple over the last more than twenty years.

风成沙纹的数值模拟研究已取得了不少进展，但各家所采用的模拟方法及模拟结果存在不少差异。

In this paper, the problems mentioned above are studied by both wind tunnel experiment and numerical simulation to improve the knowledge about aeolian grain transport, and impel the development of this subject.

因此，本文通过风洞实验和数值模拟对以上问题加以深入研究，以深化对风成地表颗粒物输运规律的认识，推进学科的发展。

The followings are studied in this paper:(1) The orbit is evaluated according to a three-dimensional numerical model of the aerated water jet.

根据掺气水舌入水喷溅特性，建立了水滴在重力、浮力、空气阻力、水舌风及环境风的作用下的水滴随机运动的微分方程，给出了数值计算模型求解降雨强度的计算方法。

The paper studied the hydraulic characteristics of the side wall aerator by using the numerical simulation.

采用数值模拟的方法，研究了侧墙掺气坎的水力特性。

Based on numerical simulation,the effect of base aerator on the length of lateral cavity has been analyzed.

侧空腔长度对射流挟气量及水流流态均有重要影响，采用3维数值模拟，分析了底部掺气坎尺寸对侧空腔长度的影响规律。

To determining the topological relation between cells is important in the course of computing aerodynamic force for projectiles,rockets and missiles.

建立网格拓扑关系是弹箭气动力数值计算过程中关键的一步。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。