1) the third sediment disturbance
泥沙扰动
2) sediment disturbance
底泥扰动
1.
Effect of sediment disturbance on the phosphorus forms migration under different water temperature
不同水温时底泥扰动对不同形态磷分布的影响
3) sediment incipience
泥沙起动
1.
Homogenous turbulence structure near the wall and sediment incipience;
各向同性均匀湍流近壁结构及泥沙起动
2.
Assuming that the instantaneous bed shear stress is the hydrodynamic mechanism of sediment incipience and transportation,the numerical model of the local scour under the complex flows around the structures is presented.
以床面瞬时剪应力作为泥沙起动及输运的水动力机制,建立了结构物周围复杂流场下床面局部冲刷的数学模型。
3.
As one of the most basic problems in the sediment transport theory, the mechanism of the sediment incipience is also needed to be understood for the study of local scouring process.
泥沙起动是泥沙运动理论中最基本的问题之一,也是研究泥沙输运及局部冲刷时必需解决的问题。
4) sediment transport
泥沙运动
1.
Study on the sediment transport direction on the beach of Taozi Bay,Yantai;
烟台套子湾海滩泥沙运动方向研究
2.
On the effective shear stress of sediment transport;
确定泥沙运动有效切应力方法的探讨
3.
The authors analyze the surface sediment diameter characteristics in the east of Haikou Bay using EOF method,and draw some conclusion on the sediment sources and main hydrodynamics factors which control the sediment transport in the east of Haikou Bay.
作者对海口湾东部表层沉积物的粒径用EOF方法进行了分析 ,得出了海口湾东部浅滩区的泥沙来源与控制泥沙运动的主要动力因素 ,为对海口湾东部浅滩区的科学整治提供了依据。
5) sediment movement
泥沙运动
1.
And it is found that the sediment movement is consistent with the action of waves.
发现大风天气海底泥沙对波浪作用反应灵敏,悬沙和底沙分布规律与波浪作用吻合,为波浪作用下海底泥沙运动的理论研究以及海区工程开发提供了科学依据。
2.
The total flow differential model of sediment density current is used to simulate the sediment movement in the reservoir at dam.
运用异重流总流微分模型预测水库坝址泥沙运动过程,在满足防洪安全的前提下,结合水库入库洪水过程,进行旨在水库排沙比最大的水沙联合调度研究,最后给出实例。
3.
The remote sensing image analysis of the sea area where Binzhou Port is located has revealed the characteristics of sediment distribution in the sea area and the pattern of sediment movement under different conditions.
从泥沙运动的角度而言,受已建导堤影响,落潮水流和风吹流、波生流等叠加可能形成较复杂的向外水流和环流,携带泥沙向外输运,使高含沙水体运动更远的距离,一般情况下可达-6 m等深线以远。
6) sediment incipient motion
泥沙起动
1.
Experimental study on the sediment incipient motion in circulating flow;
回流泥沙起动规律的试验研究
2.
Because the resistance in sediment incipient motion is the sand-grain resistance,it is proposed that computation of the sand-grain resistance is based on resistance of sediment incipient motion.
利用泥沙起动的Shields曲线与明渠阻力特性之间的相似性,结合实测泥沙起动资料给出了沙粒阻力的计算公式。
3.
The motion characteristics of the sand group are researched from the perspective of theory and the dynamic condition for sediment incipient motion is obtained by determining the critical Shearing Stress, which can get rid of the influence of experiential factors and the research of sediment will radically start strict theoretical exploration.
根据波浪作用下的推移质群体泥沙运动方程可以看出推移质运动具有明显的非线性特性,对非线性动力学特性进行分析得到了考虑离散力时泥沙起动的希尔兹(Shields)曲线及一般形式的推移质输沙公式。
补充资料：持续作用扰动下的稳定性
持续作用扰动下的稳定性
stability in the presence of persistently acting perturbations
持续作用扰动下的稳定性仁咖幽勺协触脚。曰盆兄of哪滋众团ya曲嗯碑由州画d.侣;yc功后”.即c几np班noc”-，。110朋益e拍即IO四，x BO3M脚日e朋，xj 初值问题 交=f(x，r)，x(t。)二x。，x任R”(*)之解x。(t)(t)t。)的如下性质:对每一个。>O都有一个占>O使得对每一个适合不等式!y。一x。}<占的夕.，，以及满足以下条件的每一个映射g(x，:): a)在集合 E:={(x，t):t)t。，{x一x。(t)i<。}上g和g，都连续; b)s印(:，，)。::}夕(x，t)一f(x，t)I<吞，初值问题 乡=g(y，t)，夕(t。)=夕。，夕任R”的解y。(t)对一切t)屯，有定义且满足不等式 suP}y。(t)一x。(t)}<￡. r)t。 Bohi定理(B心h】t玩”~)(【11).设初值问题(，)有解x(t)，t)t。，满足以下条件: 幻f和fx对某个。。在瓦。上连续; 刀)s叩。，:。4}人(x(t)，t)}}<+的: 下)映射f在点(x(t)，‘)，t)t。，处对x可微，这个可微性对t)t。是一致的，即 s叩兴}厂(二(‘)+，，，)一f(、(。)，:)+ ，》万。}y} 一人(x(t)，亡)yl~0当y一，O时.这时，为使初值问题的解在持续作用的扰动下为稳定，必要与充分条件是:方程组又=厂(x，t)沿解x(t)的变分方程(粗血tiona】叹业tio璐)组的上奇异指数(见奇异指数(s泊g止汀exponents))小于零. 若f(x，t)不含t(即自治系统)，而解x(t)为周期的或常值的;或者f(x，t)对t有周期而解x(0也有相同的(或可公度的)周期或者常值，则:l)Bohi定理中所陈述的一致可微性条件是多余的(它可从定理的其他条件导出);2)方程组交=f(x，t)沿解x(t)的变分方程组的上奇异指数可以有效地算出来.【补注】持续作用扰动下的稳定性也称为持续扰动下的稳定性(stab正ty Under pelsis招ni perturhatio幻)或全稳定性(total stabiljty).
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