1) wall shear stress
管壁切应力
1.
With the aid of Ling and Atabek s "local flow" assumption for the nonlinear convective acceleration terms of the Navier-Stokes equation governing the pulsatile blood flow in large arteries, a nonlinear method to determine the wall shear stress in straight arteries was proposed by use of the measured blood viscosity, center-line velocity, blood pressure and arterial radius.
从Ling和Atabek提出的"局部流"理论出发,提出一种利用测量血液黏度、管轴上的血流速度、压力和管径波形计算均匀动脉管壁切应力的非线性方法。
2.
The distributions of the wall shear stress with three stenosis severity(h/R0=1/4,1/3,1/2) are provided and discussd.
提供了3种狭窄程度下的管壁切应力分布曲线并进行了分析和比较,同时给出了模型M3(h R0=1 3)在一个流动周期内的流线图。
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) bed shear stress
底壁切应力
1.
Experimental study on bed shear stress in smooth open channels;
光滑壁面明渠底壁切应力试验研究
2.
Based on the experiments date measured with a Preston tube,the bed shear stresses in open channel in different hydraulic conditions are compared for non-uniform and uniform flow.
本文在分析用Preston管量测的实验资料基础上,对比了光滑壁面明渠均匀流和非均匀流的底壁切应力在不同水力条件下的规律,探讨了断面中心处底壁切应力、平均底壁切应力和切应力的分布等几个切应力公式在两种不同流动类型下的适用性,指出非均匀流与均匀流的切应力特性存在差异。
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)
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