In:
Surface and Interface Analysis, Wiley, Vol. 42, No. 6-7 ( 2010-06), p. 1122-1127
Abstract:
The contact angle of a gas–liquid–solid system plays a significant role in predicting flow patterns in microchannels for multiphase flows. The contact angle, which is a result of surface forces, is strongly influenced by the channel material. In the present study, we describe contact angle measurements and simulations of flow in a microchannel for the multiphase system hydrogen and nitrobenzene. Contact angles for nitrobenzene–hydrogen–stainless steel and nitrobenzene–hydrogen–carbon systems were measured using the sessile drop method at various pressures. Simulation of the two‐phase system was performed using ANSYS FLUENT. The static contact angle is used as a boundary condition. The results from simulation of flow for a wide range of contact angles and the measured contact angles are presented. Experimental observations and simulation results agree in that the contact angle must be smaller 90° to obtain small bubbles and to increase the gas–liquid interfacial surface area. Copyright © 2010 John Wiley & Sons, Ltd.
Type of Medium:
Online Resource
ISSN:
0142-2421
,
1096-9918
Language:
English
Publisher:
Wiley
Publication Date:
2010
detail.hit.zdb_id:
2023881-2
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