| 1. | Investigation of poiseuille in the nano - field by sph method 在纳观域采用光滑粒子法求解泊肃叶流问题 |
| 2. | Plane poiseuille flow 平面泊肃叶怜 |
| 3. | Poiseuille - hartman flow 哈特曼流 |
| 4. | Poiseuille ' s formula 泊肃叶公式 |
| 5. | Poiseuille ' s law 泊肃叶定律 |
| 6. | Theory calculation and derivation demonstrate that the heat conduction of membrane exerts little influence on performance . the characteristics of mass transfer through membrane are mixed flow including knudsen flow and poiseuille flow , which moreover , vary with operational variables 理论推导与计算表明:膜的导热性对真空膜蒸馏过程的影响可以忽略,膜蒸馏过程膜内质量传输机制是努森流与粘性流共同作用的混合流机制。 |
| 7. | The related physical equations ( yang - laplace equation and hagen - poiseuille equation ) were re - derived for different pore shapes . and the effect of using different pore model such as circle , elliptical and slit pore model to determine pore size and its distribution was investigated 计算结果表明当假设孔为椭圆形时,液体置换法表征得到的结果与扫描电镜、比重法分析得到的实验结果比较吻合,也可以较好地反映孔的实际形态结构。 |
| 8. | ( 2 ) with f varying , there exists a number fr which is about - 1 ( curvature , torsion and dean number have little influence on fr ) , when f > fr , the maximum of the axial velocity is near the outside bent and the friction factor ratio increases with f increasing ; when f < fr , the maximum is near the inner side bent and the ratio increases with f decreasing ; when f = fr , the distributions of the axial velocity are similar to those of poiseuille flow and the friction ratio is about 1 ( 2 )当f变化时,存在确定的数值fr ( fr在- 1左右。曲率、挠率和dean数对fr的影响很小) ,当f fr时,轴向速度最大值偏向外侧,摩擦系数比随f增大而增大;当f fr时,轴向速度最大值偏向内侧,摩擦系数比随f减小而增大;当f = fr时,轴向速度的分布和poiseuille流近似相同,摩擦系数比约为1 。 |
| 9. | In present dissertation , firstly an analytical study on the force and deformation of an er single chain under poiseuille flow is presented from the point of microscopic view . an approximate solution of the poiseuille flow in a tube with rectangular cross is derived from galerkin approach . the balance equation of moment for the er chain is established to avoid using point - dipole model , which is not accurate enough in the case that dielectric particles are adjacent to each other 本文首先从微观的角度,分析电流变链在poiseuille流动中的受力以及变形,分析过程中推导了矩形截面管内poiseuille流动速度分布的galerkin近似解,并采用理论力学软索模型对电流变变链的受力进行分析,从而避免了点偶极子近似在粒子相距较近情况下引起的误差。 |
| 10. | According to the experiment of influences of fiber structures and the width of edge channel on flow filling , it was found that even a small gap ( l or 2mm ) between the preform and the mold edge could also disrupt the flow pattern , which evidently changed the local permeability of preform . the filling process was simulated using the permeability for different edge width predicted by a . hammami or poiseuille model , which shown good agreement with the experiment results 实验研究了纤维铺层结构及流道缝隙的宽度对充模流动的影响,发现在纤维预成型体和模具壁间存在的较小的缝隙也会对边缘的流动产生干扰,进而影响增强材料主体的渗透;对于不同的缝隙宽度,分别根据a . hammami模型和poiseuille模型预测边缘等效渗透率,并进行充模过程数值模拟,与实验结果吻合较好。 |