| Summary: | 碩士 === 國立中央大學 === 機械工程學系 === 101 === This article discussed two immiscible fluids in microchannel droplet formation and fluid dripping case from the chip outlet, by ANSYS FLUENT software simulation of two-phase fluid in a two dimensional T-junction microchannel flow state. Without considering the chemical reaction at the interface between two phase fluids, observe the two phase fluid contact angle at different volume flow rates and different inner wall contact angle fluid flow case
in the T-junction microchannel. The gas and liquid segmented flow in the T-junction microchannel and liquid dripping case from the chip outlet, observe whether it will be a different inner wall contact angle and chip surface contact angle of liquid dripping affected situations.
Using five different volume flow rates and four different inner wall contact angle discussed the gas cut off liquid generate respective block whether independent and block size with the flow pattern of relationship. The inner wall
contact angle and the chip surface contact angle is discussed dripping case from the chip outlet caused.
This article pointed out that water and air mutual push generate respective independent block in T-junction microchannel and fixed block of time to increase. In the two-phase volume flow rate ratio is five, because the different inner wall contact angle caused by the change of air and water in the form of flow, some inner wall contact angle will cause the air and water separate block can’t produce. While the fluid dripping case from the chip outlet this article discussed four inner wall surface contact angle and three kinds of chip surface contact angle of water dripping case from the chip outlet, that the chip surface contact angle of water influence from chip outlet dripping will affect more than the inner wall surface contact angle.
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