ADDITIONAL PARAMETER IN WITHDRAWAL

被引：20

作者：

TALLMADG.JA

SOROKA, AJ

机构：

[1] Department of Chemical Engineering, Drexel Institute of Technology, Philadelphia

来源：

CHEMICAL ENGINEERING SCIENCE | 1969年 / 24卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2509(69)80046-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Dimensional analysis indicates one more non-dimensional parameter in withdrawal than the number predicted by previous theories. For the case of continuous plate withdrawal from Newtonian fluids, the suitable independent parameter is foudn to be fluid property number (Fp) which is a function of viscosity, surface tension, density, and gravitational field. The Reynolds number is defined for withdrawal and is shown to be a function of Fp and capillary number for laminar flow. The onset of wavy flow in withdrawal is shown to occur near Re of one, based on tests with eight liquids having an 80-fold range of Fp. It appears that the Froude number may also be used as a wave point criterion, but use of the Weber number does not appear to be useful for the conditions studied. Comparisons are made with wetted wall flow. © 1969.

引用

页码：377 / &

共 12 条

[1]

DREW TB, 1964, ADVANCES CHEMICAL ED, V5, P151

[2]

Fulford GD, 1964, ADV CHEM ENG, V5, P151

[3] FILMS OF NON-NEWTONIAN FLUIDS ADHERING TO FLAT PLATES [J].