sand ripple

Research on the Numerical Imitation of Sand Ripple Formation and the SPH Method

沙纹形成的数值模拟及SPH方法研究

The roughness of the bed varies from 0.013 to 0.021, gradually increasing as the sand ripple's development.

床面糙率值为0.013~0.021，并随着沙波发育逐步增大。

Finally, the stream flow field and sand flow field models are discretized, and nucleation, growth and moving process of sand ripple are simulated well with comparing experimental results.

最后，对气流场和沙流场模型进行离散化处理并很好地模拟了气流场和沙流场作用下的沙纹生成、增长、移动过程并其数值模拟结果与现场试验结果进行了对比分析。

The Analysis of Sand Ripple Shape and Distribution under the Different Shape of Sand Windbreak

在不同形状的防沙墙下沙纹形状及分布分析

The sand ripple pattern from the numerical solution of differential equations is the same with the field observations, reproducing the nonlinear behavior of the generating and merging.

数值求解该微分方程，得到了与野外观测相一致的沙波纹斑图，同时再现了沙波纹生成、合并的非线性行为。

Based on the long-term fixed-site observation data, including the distribution laws of pyramid dunes, wind regime, fluid field, sand ripple and temperature-layer structure the authors attempted to set up a new mechanism of the formation processes of pyramid dunes.

笔者根据金字塔沙丘的分布规律与微气候条件的观测（包括金字塔沙丘流场，沙波纹、温度层结的定位观测），初步建立了金字塔沙丘形成过程的机理。

TESTING Experimental Study on the Sand Ripple Formation

明渠沙纹形成的试验研究

Disturbances with various patterns were exerted to the open channel flow in a flume to quantitatively investigate the variation of turbulence structure during sand ripple formation and its influence on sand movement and river bed evolution.

本文通过在水槽实验中采集的流速过程数据，定量地研究了沙纹阶段明渠水流在不同形式扰动作用下的湍流结构，以及湍流结构对泥沙运动和床面演化的影响。

Progress in aeolian sand ripple research& A review

风成沙纹的研究进展

This paper presents the analysis and calculation of wave attenuations when waves travel on sand bed, sand ripple bed and muddy bed, respectively.

本文分别分析与计算了波浪在粉沙质海床、沙纹海床和淤泥质海床上传播时波高的衰减。

Experimental investigation on the bottom shear stress of the sand ripple bed under wave action

波浪作用下沙纹床面上底部剪应力的实验研究

A Coupled Map Lattice Model for Sand Ripple Formation

沙波纹生成的耦合映射格子模型

The experimental study on geometry of sand ripple under wave action

波浪作用下沙纹形态的实验研究