THE EFFECTS OF CONTACT-ANGLE ON 2-PHASE FLOW IN CAPILLARY TUBES
THE EFFECTS OF CONTACT-ANGLE ON 2-PHASE FLOW IN CAPILLARY TUBES
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DOI：
10.1016/0301-9322(93)90007-h
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发表时间：
1993-04-01
影响因子：
3.8
通讯作者：
PANTON, RL
中科院分区：
文献类型：
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作者：
BARAJAS, AM;PANTON, RL
在小直径（1.6mm i. d.）水平管。空气-水混合物的绝热流动在一定的流速范围内进行了测试，空气为1000：1，水为600：1。建立了具有不同接触角的四个系统的流动图。每个系统包含相同的流体（空气和水），并且具有相同的管直径，但是，每个系统的管材料不同。四种管材料为耐热玻璃、聚乙烯、聚氨酯和FEP（一种含氟聚合物树脂）。在每种管材料的平坦样品上测量的接触角中的三个是部分润湿的（34度、61度和74度），一个是部分非润湿的（106“）。系统的流量图非常相似，除了一个区域的溪流流。当接触角变大时，沟流是代替波浪流的一种新的流态。另一方面，非润湿系统的过渡边界，除了塞段塞过渡，显着改变。
A two-phase gas-liquid flow was studied in small diameter (1.6 mm i.d.) horizontal tubes. Adiabatic flow of air-water mixtures was tested over a range of flow rates, 1000:1 for air and 600:1 for water. Flow maps were established for four systems with different contact angles. Each system contained the same fluids (air and water) and had the same tube diameter, however, the tube material was different for each system. The four tube materials were pyrex, polyethylene, polyurethane and FEP, a fluoropolymer resin. Three of the contact angles, measured on a flat sample of each tube material, were partially wetting (34-degrees 61-degrees and 74-degrees) and one was partially non-wetting (106'). The flow maps for the systems were very similar except for a region of rivulet flow. Rivulet flow is a new flow regime that replaces wavy flow when the contact angle becomes large. On the other hand, the transition boundaries for the non-wetting system, except for the plug-slug transition, were significantly changed.