1) bed shear stress
床面切应力
1.
Based on the principle that the bed shear stress and friction velocity of the grass cover in the model should equal those of actual condition in which grass cover is destroyed due to scouring,an experimental equipment was designed to simulate the scouring flow with high velocity in actual rivers and to measure the hydraulic parameters during the scouring process.
基于模型和原体草皮冲刷破坏时床面切应力和摩阻流速应该相等原理,研制了一套可用于模拟实际河道中的大流速冲刷水流,并测定冲刷过程中植被水力学参数的试验装置。
2.
As to the sediment used in the paper s experiment,only the bed shear stress increases to1.
对于本系列试验所用泥沙,只有床面切应力大于初始粗化床面切应力的1。
3.
The bed shear stress in bend flow is the direct motivation for sediment initiation,which is an important issue for hydraulic engineers to concern about.
弯道床面切应力是弯道泥沙起动的直接动力,运用弯道水流概化模型试验,利用先进的ADV进行了三维流速数据的采集。
2) shear stress
床面剪切力
1.
The bottom shear stress and sediment movement for a wave-current coexisting system;
波、流共存时的床面剪切力和泥沙运动
2.
Based on the theory of boundary layer, a shear stress has been derived;the carring capacity for wave-current system has been introduced by means of the energy theory and a series of coefficients are given as well.
从边界层理论建立了床面剪切力 ,进一步以能量理论导出了波、流共存时的水体挟沙力公式 ,并利用现场资料得出有关系数。
3.
A theoritical bottom shear stress for a wave-current coexisting system is derived by means of the theory of boundary layer assumption.
利用边界层理论 ,导出了波、流共存时的床面剪切力 ,得出综合摩阻系数、综合速度和综合摩阻速度计算公
3) bottom shear stress
床面剪应力
1.
Based on the properties of the threshold movement of bottom mud due to progressive wave, a theoretical solution of bottom shear stress due to progressive wave action was derived, assuming the water as viscous fluid and the mud as visco-elastic medium.
在介绍推进波作用下底泥起动特点的基础上 ,将上层水体作为粘性流体、底泥作为粘弹性体 ,推导了推进波作用下泥床面剪应力的表达式 。
4) maximum bed shear stress
最大床面剪切力
5) Wall shear stress
壁面切应力
1.
Experimental analysis on influence from sudden change of roughness of open channel bottom on friction velocity of turbulent flow and wall shear stress;
明渠渠底糙率突变对紊流摩阻流速及壁面切应力影响的试验分析
2.
Experimental measurement of the wall shear stress in horizontal air-water bubbly flow;
水平管内气液两相泡状流壁面切应力的实验测量
3.
CFD simulation of wall shear stress in gas-liquid vertical and inclined upward slug flow;
垂直及倾斜上升管内气液两相弹状流壁面切应力的模拟
6) wall shear stress
壁面剪切应力
1.
An analysis is made of the wall shear stress and the stress fields of the molten polymers in various flow zones of annular dies.
详细分析了聚合物熔体在圆环隙口模中不同流动区域的壁面剪切应力和应力场 ,并讨论了流道截面形状的变化对壁面剪切应力的影响规律 ,以及熔体受力对其弹性流变效应和挤出物中残余应力的影响 结果表明 ,在熔体挤出过程中 ,压缩区对熔体的流动具有重要影
2.
With the inflow boundary condition of periodic pulsatile velocity,rigid aneurysm model is established and the features (velocity,pressure and wall shear stress) of the flow field in aneurysm are investigated numerically.
采用计算流体动力学(CFD)数值模拟的方法,在周期性脉动速度入流条件下,建立刚性动脉瘤模型并研究了动脉瘤模型中流场的特征(速度、压力、壁面剪切应力)。
补充资料：等效切应力
等效切应力
equivalent shear stress
dengxlaoq一eyingll等效切应力(equivalent Shear stress)一般应力状态下的各应力分量经适当组合而形成的与纯剪切应力等效的应力，也称统一切应力，切应力强度。其表达式为一六寸(一，2+(一，2+(一)2 等效切应力与偏应力张量二次不变量(见应力张量)的关系为二一了，万，与八面体切应力二(见八面体应力)仅差一常系数，与坐标轴变换无关。 (王占学)
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