FREEZING OF A PARAFFIN FLOW DOWNSTREAM OF AN ABRUPT EXPANSION

被引：6
|
作者：
MYRUM, TA
THUMMA, S
机构：
[1] Mechanical Engineering Department, Louisiana State University, Baton Rouge
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1992年 / 35卷 / 02期
关键词：
D O I：
10.1016/0017-9310(92)90279-2
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Freezing of a paraffin flow downstream of an abrupt expansion was studied experimentally. Results obtained for three different expansion ratios (d/D) at a constant system flow rate (Re(D) almost-equal-to 3400) and a constant inlet Reynolds number (Re(d) almost-equal-to 3400) demonstrated that the 'ice-band' spacing is a function of the freezing parameter (theta) only and can be predicted to within 8% using a correlation developed for water flow in a constant-area duct. The results also showed that the effect of expansion caused freeze-off to occur at higher theta values, with freeze-off occurring for 7.5 < theta less-than-or-equal-to 8.5, 11 < theta less-than-or-equal-to 13, and 13 < theta less-than-or-equal-to 16, respectively, for d/D = 1.0 (no expansion), 0.643, and 0.340.
引用
收藏
页码：421 / 431
页数：11
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