saltation

Analysis of Lift-off Sand Particles Spin in Aeolian Saltation

沙粒起跳自旋的分析

We first consider this minimum velocity for horizontal flow, the saltation velocity.

首先讨论在水平流动时的最低速度, 即沉积速度.

The differences between surface creep and saltation are gradual and it to draw a fixed line.

表面爬行和跳跃之间的差别是渐变的,它很难划一条固定分界线.

Research on Sand Saltation Splash Function by High Speed Digital Camera

沙粒跃移击溅函数的高速数字摄像研究

Discrete Dynamics Simulation on Developing Process of Aeolian Sand Saltation

风沙跃移运动发展过程的离散动力学模拟

This type of transport is called saltation.

这种类型的搬运称为河底滚沙.

The thesis focus on the response time of sand transport rate to wind speed fluctuations of near-surface saltation sand flow and the dust transport law of high-altitude in the role of the gust.

本学位论文针对跃移风沙流输沙率对变化风场的响应时间以及沙尘在阵风作用下向高空的输运规律展开数值模拟研究。

The wind profile in saltation layer does not perfectly follow the logarithmic law.

风沙两相流中稳定风速廓线并不完全遵循对数规律变化.

The results indicate frequency distributions of saltation normalized on their mean values disagree with normal distribution.

以风洞内颗粒高速摄影实验资料为基础,对颗粒跃移运动参数的分布及其跃移速度分布函数进行了探讨.

Magnus Effect in Wind-blown Sand Saltation

风沙跃移运动中的Magnus效应

Usually , wavelet transform module maximum accords with saltation points.

小波变换模的极值点常对应于信号突变点.

The probability curve based on thin section size analysis is almost totally composed of saltation population with high gradient which indicates high sorting index.

薄片粒度测量作出的概率图几乎全为跳跃总体，其斜率高，分选较好。

The calculated results show that the effect of the moving sand in the fluid outside the region to which saltation is confined, is similar to that of solid roughness, and the effective roughness can be depicted as the quadratic function of the friction velocity of the wind.

结果表明，跃移沙粒对风速的影响类似于床面粗糙度的影响，有效粗糙度随摩阻速度的变化关系可用二次函数表征；