UC知道化工专业英语翻译一
来源：百度知道 编辑：UC知道 时间：2024/05/27 09:07:01
3. Results and discussion
3.1. Pressure drop
In literature the pressure drop data were frequently reported
as the Z-factor, which was deBned as the ratioof PPSM=PPEM, where PPSM and PPEM are the pressure
drops for static mixer and that for the empty tube,
respectively (Boss & Czaskiewicz, 1982). These values
are based on the same ReEM, the Reynolds number for
the empty tube, which is deBned as ReEM =Du=. Where
D; u and are the tube diameter, the mean 7ow velocity,
and the kinematic viscosity, respectively. Fig. 2 depicts
the Z-factor for the present mixer based on the pressure
drop data measured herein. The laminar-turbulent transition
could be located at approximately of Re=150, which
correlates with Paul and Muschelknautz (1982). Such an
observation suggests that the static mixer could initiate
early transition to turbulence compared with the case of
the empty tube (2,100–4,000).
In pertinent lite
3.1. Pressure drop
In literature the pressure drop data were frequently reported
as the Z-factor, which was deBned as the ratioof PPSM=PPEM, where PPSM and PPEM are the pressure
drops for static mixer and that for the empty tube,
respectively (Boss & Czaskiewicz, 1982). These values
are based on the same ReEM, the Reynolds number for
the empty tube, which is deBned as ReEM =Du=. Where
D; u and are the tube diameter, the mean 7ow velocity,
and the kinematic viscosity, respectively. Fig. 2 depicts
the Z-factor for the present mixer based on the pressure
drop data measured herein. The laminar-turbulent transition
could be located at approximately of Re=150, which
correlates with Paul and Muschelknautz (1982). Such an
observation suggests that the static mixer could initiate
early transition to turbulence compared with the case of
the empty tube (2,100–4,000).
In pertinent lite
3 。结果和讨论
3.1 。压降
在文学的压降数据经常报告
作为Z型的因素，这是deBned的ratioof PPSM = PPEM ，那里PPSM和PPEM是压力
下降的静态混合器，并为空管，
分别（老板及Czaskiewicz ， 1982年） 。这些价值观
都是基于同样的ReEM ，雷诺数为
空管，这是deBned作为ReEM =都= ？ 。哪里
D节; U和？是管径，平均7ow速度，
和运动粘度分别。图。 2描述
的Z -因素本调音台的基础上的压力
测量数据均为下降。层流湍流过渡
可设在大约再= 150 ，这
相关与保罗和Muschelknautz （ 1982年） 。这种
观察表明，静态混合器可以发起
早日过渡到比较动荡的情况下
空管（ 2,100-4,000 ） 。
在有关文献的一些相关的Z -因子
为Kenics混合器的情况下，像格雷斯（ 1971年） ;
陈（ 1973年） ;威尔金森和CLI ？ （ 1977年） ;保罗和
Muschelknautz （ 1982年） ;和海伍德， Viney ，和斯图尔特（
1984年） ， mostof的基础上搅拌机的尊重
比率超过团结。为比较的目的，
只有相关的保罗和Muschelknautz （ 1982 ）
层流7ow是描绘成箭头图。 2 。那个
协议是令人满意的。