| 液相物性对壳侧不互溶双组分两相流截面含气率及两相压降的影响 |
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| 引用本文： | 黄兴华,王启杰.液相物性对壳侧不互溶双组分两相流截面含气率及两相压降的影响[J].化工学报,1997,48(5):593-599. |
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| 作者姓名： | 黄兴华 王启杰 |
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| 作者单位： | 上海电力学院动力系,上海电力学院动力系,上海电力学院动力系 上海 200090
,上海 200090
,上海 200090 |
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| 基金项目： | 国家自然科学基金资助项目(No.59476022) |
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| 摘 要： | 在用空气-水、空气-0号柴油研究的基础上,用空气和质量浓度为30％的甘油水溶液研究了理想管壳式换热器壳侧平均截面含气率和两相压降,以期进一步考察不同液相物性的影响.研究表明,液相物性对两者均有一定影响.提出了不同液相物性时截面含气率的通用关联式.根据流型整理了两相摩擦因子.并提出了一种新的两相摩擦压降关联式,它能较好地预测不同液相物性时两相压降的实验数据.
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| 关 键 词： | 壳侧两相流 截面含气率 两相压降 两相流 压力降 |
EFFECTS OF FLUID PROPERTIES ON VOID FRACTION AND FRICTIONAL PRESSURE DROP IN THE SHELL-SIDE IMMISCIBLE TWO-COMPONENT TWO PHASE FLOW |
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| Huang Xinghua,Wang Qijie and Yang Xiaoqiong.EFFECTS OF FLUID PROPERTIES ON VOID FRACTION AND FRICTIONAL PRESSURE DROP IN THE SHELL-SIDE IMMISCIBLE TWO-COMPONENT TWO PHASE FLOW[J].Journal of Chemical Industry and Engineering(China),1997,48(5):593-599. |
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| Authors: | Huang Xinghua Wang Qijie and Yang Xiaoqiong |
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| Abstract: | Based on the study with air- water and air-#0 diesel oil in heat exchanger, results on the effects of fluid properties on void fraction and frictional pressure drop in the shell-side two-phase flow with air - 30% (by weight) water glycerine solution was presented. The results showed that the void fraction increases with the increase of liquid viscosity when the mass fraction and mass velocity are maintained unaltered. Surface tension has also effect on the void fraction. Combining these two effects, a void fraction correlation is obtained which can be used in different air-liquid systems. The experimental results show that the data of frictional multiplier increases with the increase of liquid viscosity. A comparison between the data of air - glycerine water solution and air - water system shows that different frictional multipliers approach to 1 as the value of Martinelli number increases. A new two-phase frictional drop correlation is presented. The average error is about 15% . |
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| Keywords: | shell-side two-phase flow void fraction two-phase factional pressure drop |
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