Abstract
An experimental investigation on the behavior and characteristics of interfacial waves in downward inclined rectangular channel was conducted. The interfacial waves were traced and measured by using conductance technique. The wave patterns were distinguished and defined. The characteristics of the interfacial waves, such as time-averaged film thickness, wave height, wave propagation speed, wavelength and wave frequency, were systematically examined in terms of gas and liquid superficial volumetric fluxes. The effect of the inclination and flow channel geometry of the test section on the interfacial wave was also investigated.
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