| 1. | Effect of the vasal viscoelasticity on wall shear stress under rolling massage 法推拿作用下血管切应力的影响 |
| 2. | Wall shear stress 壁面切应力 |
| 3. | The method for improving the measuring accuracy of the wall shear stress by electrochemical technique 提高电化学法测试壁面剪应力精度的方法 |
| 4. | Theoretical expression ot the wall shearing stress has been deduced for the level rotary flow in an internal energy dissipation tunnel 摘要本文推导了水平旋转内消能泄洪洞空腔环流壁面切应力的理论分析表达式。 |
| 5. | As a result of the heterogeneous distribution of bubbles in the horizontal air - water bubbly flow , the wall shear stress was different along the circumference of tube 摘要水平管泡状流时气泡主要集中在管道的上部,在管下部只有少量的气泡。 |
| 6. | It is found that drag reduction occurs with adequate wavenumbers and grows with an increase of h . the mechanisms are revealed through variations of velocity profile and the decrease of wall shear stress 分析减阻机理是流速分布曲线及近壁区速度梯度介于层流与湍流之间, h值增大引起壁面剪应力显著下降。 |
| 7. | Based on the measured data , the change of the friction velocity of turbulent flow and the characteristics of the wall shear stress under different sudden roughnesses and different water depths are analyzed herein 通过实测资料分析不同糙率突变和不同水深的紊流摩阻流速变化情况和水流的壁面切应力的特点。 |
| 8. | ( 2 ) the flaws on the one - dimension ( 1 - d ) compressible isothermal average - friction - factor were indicated . a friction factor computation method was proposed , which is not only suitable for compressible flow but also easy to achieve the average wall shear stress ( 2 )指出关于微管道内已有的一维可压缩等温流动的平均阻力系数确定方法的不足之处,并提出了一种便于实用的可压缩流动平均阻力系数的确定方法。 |
| 9. | The transport of macromolecules in curved tubes with permeable arterial wall was simulated numerically . the fields of axial velocity , the fields of secondary flow function and the distribution of wall shear stress along the transverse section of arterial wall were obtained under different dean number , 10 10800 ,计算了弯曲血管内的二次流轴向速度场和剪应力沿管壁分布的情况。计算求得了在不同dean数和peclet数下,其中10 |
| 10. | The hemodynamic change induced by embolization of the cerebral arteriovenous malformation was analyzed using the water hammer principle . the highest pressure that can be reached when the water hammer phenomenon occurs was calculated . the acute instantaneous pressure rising may be an important factor leading to intracranial hemorrhage or swelling when the avm is embolized . it is shown that long feeding artery of avm will increase the possibility of direct water hammer , and high wall shear stress of feeding artery will increase the water hammer pressure . this suggests that such kind of avms should be embolized stepwise and the systemic pressure should be rationally reduced before embolization 以水击原理分析了脑avm栓塞治疗时血液动力学变化过程,计算了瞬时水击压力可能达到的最高值。瞬时增高的水击压力可能是avm栓塞时发生急性脑出血或脑肿胀的重要血液动力学因素。而avm供血动脉血管壁面切应力偏高和供血动脉过长可增加水击的危险程度,提示对这类结构avm栓塞治疗时应采取合理的降压措施并尽可能分多次栓塞。 |