This paper studies the effect of the eccentricity between the inner bob and the outer cup in a coaxial viscometer on the measurements of the viscosity by using a perturbation scheme. 本文用摄动法研究了双筒式粘度计的内外筒不同心时对于测量粘度所引起的误差。
The effects of gas flow rate, inner and outer nozzle diameters, surface tension, density and viscosity of liquid on the size of bubbles formed are analyzed. 分析了气体流量、管口内外直径以及表面张力、液体粘度和液体密度对气泡尺寸的影响。
The interference from polymer adsorption onto the capillary inner wall surface on the viscosity measurements is completely avoided when the new modified viscosimeter is used instead of common glass viscometer. 与常规玻璃粘度计相比,新粘度计避免了在普通玻璃粘度计中测量粘度时由于高分子吸附在毛细管管壁表面引起的干扰。
In high velocity ( v ≥ 7 m/ s) inner friction heat leads to a decrease of viscosity of the ferrofluids and a worsening of magnetic particles property. 在高速(v≥7m/s)时,磁流体摩擦热致使其粘度和粒子磁性能下降,影响其密封性能。
KCl ( g) and aerosols are condensed in the probe surface to form inner layer which has a great viscosity. 内层是KCl(g)和气溶胶颗粒在探针表面冷凝而形成,具有较大粘性。
The results show that the dynamic behaviors include periodic motion, double-periodic motion, quasi-periodic motion and chaos. Several parameters as the thickness of floating ring, the ratio of inner/ outer oil gap, viscosity of lubricating oil are influence on the stability of system. 结果表明:浮环轴承转子系统的运动形式主要表现为周期运动,倍周期运动,概周期运动和混沌运动,并且浮环厚度、内外间隙比、润滑油粘度等参数对系统特性有重要的影响。