1) wind-sand flow
风沙流
1.
Due to the need of the high-frequency measurement of wind velocity for the research of the wind-drift sand dynamics at present,the 55R49 hot-film probe was applied to the velocity measurement of wind-sand flow.
通过风洞实验,分析该探头测速性能和频响特性,以及风沙流环境测速的可行性。
2.
The damage of wind-sand flow is multiaspect, not only its destruction to soil surface texture and weakening to anti-erodibility of soil, but also affection on vegetable normal growth and mutilating to industrial and agricultural facilities.
风沙流的危害是多方面的,不仅破坏地表结构,削弱土壤的抗风蚀性,而且影响到植物的生长,损坏工农业设施。
2) sand flow
风沙流
1.
In accordance with the data investigation in numerous typical road sections in sand region,the sand flow rate is the main reason for road damages in sand regions.
通过对风沙地区多个典型路段的数据调查,风沙流速是风沙地区道路损害的主要原因。
2.
In accordance with the data investigation in numerous typical road sections in the sand region,the sand flow rate is the main reason for road damages in the sand region.
通过对风沙地区多个典型路段的调查,风沙流速是风沙地区道路损害的主要原因。
3.
Through the observation of wind speed and sand flow in different positions of shifting sand dune along the bank of the Batuwan Reservoir,sand transport rate on the surface of shifting dune was calculated and empirical formula of sand transport rate was derived.
本文通过对内蒙古乌审旗南部巴图湾水库岸边流动沙丘不同部位风速与风沙流的同步观测,计算出库岸流动沙丘表面的平均输沙率。
3) wind-blown sand
风沙流
1.
Stochastic sand trajectories in wind-blown sand were obtained by solving the differential equation which describes the vertical fluctuating velocity of sand grains.
通过对描述沙粒垂向运动速度脉动分量的随机微分方程的直接求解,获得了风沙流中沙粒运动的随机轨迹。
2.
Through simulations on abated effect of nylon and plastic nets with different structure on wind-blown sand in wind tunnel, the aim of this paper is to provide a theoretic base for optimized design of blown sand engineering in the field and a new sand-defending material application.
通过不同结构的尼龙网和塑料网对风沙流减弱作用的风洞实验研究,旨在为探求各种防沙新材料的防护功能,并为防沙新材料的开发、野外工程防沙的优化设计及其应用提供理论依据。
3.
Though simulations on abated effect of nylon net with different porosities on wind-blown sand in wind tunnel, the aim of this paper is to research the relationship between sand transporting and nylon net porosity and wind velocity.
通过对不同孔隙度尼龙网对风沙流减弱作用的风洞模拟实验,旨在探求输沙量与孔隙度和风速二者之间的关系,从而为防沙新材料的开发、野外工程防沙的优化设计及其应用提供理论依据。
4) wind-sand current
风沙流
1.
Characteristics of activity and sediment of wind-sand current in Xinjiang line of New Eurasian Continental Bridge;
新亚欧大陆桥新疆段风沙流活动特性及停积规律
5) sand-bearing wind
风沙流
1.
On the basis of using FEM to analyze the speed of wind blowing across the embankment,cutting and part cut-part fill subgrade,the speed field of snow-bearing wind and sand-bearing wind is simulated,then a reasonable cross section type of subgrade is proposed.
利用有限元的方法分析了风速场在遇到路堤、路堑、半填半挖路基时的变化情况,模拟风雪流和风沙流在遇到不同路基断面形式时的速度场,从而提出合理的路基断面形式。
6) sand flow blown by wind
风沙流动
1.
In this study for the sake of the desertification problem, which is caused by the sand flow blown by wind, the mathematical models based on the fluid dynamics under the desert flow field by the wind are analyzed.
本文为了研究风沙流动所引起的沙漠化问题,详细研究了在风的作用下沙流场数学模型的建立过程。
补充资料：风沙流
| 风沙流 wind-drift sand 风成沙在风力作用下的移动现象。风携带各种不同粒径的沙粒，使其发生不同形式和不同距离的位移称风的搬运作用 。当近地面的风速大于每秒4米时，0.1～0.25毫米粒径的沙粒就能被搬运形成风沙流。通常，被风吹扬的沙粒的颗粒大小和风速成正比。风沙流中的含沙量与高度有关。据观察，风沙流中的绝大部分沙粒都在近地表10厘米以下，并随着风速的增大而增多。风沙粒的运动方式有3种：①＜0.2毫米的沙粒在风速每秒5米时，呈悬浮状态移动称悬移。②气流中飞跃的颗粒，降落时碰撞地面而产生的回弹称跃移。③跃移颗粒对地面较大颗粒冲击后，缓缓向前移动称蠕移。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条