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液体分布装置出口流型转换实验研究 被引量：2

Experimental study of flow pattern transition with liquid flowing out distributor
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摘要 针对一种液体分布装置,采用可视化方法,对三种工质流过不同开孔规格的液体分布装置时的出口流型转换过程进行了实验研究。研究发现液体分布装置出口流型转换与管间流型转换过程相似,也经历了片状流、柱状流、滴状流以及它们之间的过渡流型。发现液体分布装置的开孔孔径、孔中心距对布液器出口流型转换有较大影响:相同孔中心距下,孔径变大使得流型转换的边界流量变小;而相同孔径下,大孔中心距会使流型转换边界流量变大。开孔规格对柱状流、片状流之间的转换影响相对于其他流型的影响要大。同时给出了液体分布装置出口流型转换的准则关联式。 The result shows that the liquid distributor outflow pattern comprises droplet,column,sheet and the intermediate modes（droplet-column,column-sheet）,which is similar to the intertube flow transition.The orifice configuration（r—the hole diameter and d—the distance between adjacent holes） has great influence on the outflow transition： to a fixed d,bigger hole brings smaller transition boundary,while to a fixed r,larger distance needs bigger transition boundary.In addition,orifice configuration has a larger influence on sheet and column modes than the other modes.The corresponding nondimensional correlation was proposed according to the experiment results.
作者 王小飞 吕凯 范华亮 何茂刚
机构地区 西安交通大学动力工程多相流国家重点实验室
出处 《热科学与技术》 CAS CSCD 2010年第2期149-154,共6页 Journal of Thermal Science and Technology
基金 国家自然科学基金创新研究群体科学基金资助项目(50821604)
关键词 液体分布装置 流型转换 开孔规格 准则关联式 liquid distributor outflow transition orifice configuration nondimensional correlation
分类号 TB657.5 [一般工业技术—制冷工程] O359 [理学—流体力学]
  • 相关文献

参考文献9

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二级参考文献33

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共引文献32

同被引文献44

  • 1赵斌,张及瑞,赵景利.降膜蒸发器筛板式液体分布装置的实验研究[J].海湖盐与化工,2005,34(4):12-14. 被引量：6
  • 2费继友,李连生.水平管降膜式蒸发器管间流动模式的研究[J].制冷与空调,2006,6(4):102-104. 被引量：18
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二级引证文献9

热科学与技术
2010年 第2期

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