Drag reduction of flow boiling with polymer additives

被引：0
|
作者：
Yun-ren Qiu
Wei-ping Chen
Qin Si
机构：
[1] Central South University,College of Chemistry and Chemical Engineering
[2] Editorial Office of Journal of Central South University,College of Chemical Engineering
[3] Tianjin University,undefined
来源：
Journal of Central South University of Technology | 2001年 / 8卷
关键词：
polymer additive; flow boiling; drag reduction; pressure drop;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The drag-reducing effect of polymer additive aqueous solution was investigated in flow boliling, and the polymer additives were two kinds of polyacrylamide (PAM) with relative molecular mass about 2.56×106 and 8.55×106. The frictional pressure drop was calculated according to the measured total pressure drop. The results show that the flow drag of flow boiling is reduced by adding a small amount of PAM to water when heat flux is in the range of 15.1 kW·m−2 to 47.0 kW·m−2, when the mass fraction of PAM is higher than 2.0×10−5, the drag-reducing effect is obvious. Drag-reducing effect of PAM, whose relative molecular mass is 8.55×106, is slightly better than that of 2.56×106 at the same mass fraction, and the greater the flow rate of the additive solution, the better the effect of the drag reduction.
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页码：143 / 146
页数：3
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