2) core resistance
湍流核心阻力
3) turbulent drag reduction
湍流减阻
1.
Studies(experimental study,theoretical analysis,numerical simulation and application tests in real systems)over around a half century since its discovery have provided much understanding on the turbulent drag reduction phenomenon and its value in applications.
添加剂湍流减阻是指在液体的管道湍流中添加少量的高分子聚合物或某种表面活性剂从而使湍流阻力大大降低的现象。
2.
To clarify the relation between turbulent drag reduction and self-excited vibration of flexible tubes, experiments were performed on the effects of turbulent drag reduction and the characters of self-excited vibration, by comparing the turbulent drag with, that in a rigid tube and by using a double-sleeve structure and a laser displacement sensor.
为弄清柔管自激振动的湍流减阻效果的初步机理,在通过实验确认柔管确有湍流减阻效果的基础上,采用双重管结构和激光测位仪,对柔管的自激振动特性及湍流减阻效果及其两者的关系进行了实验研究。
3.
Since then, turbulent drag reduction techniques have been more and more applied in engineering equipment of convection heat transfer.
此后,湍流减阻技术越来越多地应用在了各种工程设备中。
4) turbulence drag reduction
湍流减阻
1.
Since Toms found the turbulence drag reduction induced by the polymer,a lot of investigations have been done on the subject,but the mechanism for the drag reduction by the polymers still remains under debate.
自从 Toms 发现高分子湍流减阻效应之后,众多学者也纷纷开展了对其减阻机理的研究,但是一直都没有定论。
5) Resistance enhancement by turbulence
湍流增阻
补充资料：肺循环阻力(或全肺阻力)
肺循环阻力(或全肺阻力)
pulmonary circulation resistance
血液在肺部血管内流动时和血管壁之间的摩擦力和血液内部的摩擦阻力。肺动脉管壁较薄，分支短而管径大，故肺动脉的可扩性较大，对血流的阻力很小，仅0.12PRU(外周阻力单位)。肺循环动脉部分总的阻力和静脉部分总的阻力相等，故血液流动时在动脉部分的压力降落和静脉部分的压力降落相等。
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