5024 Numerical Computation of the Fluid Flow in a Micro Channel
Details
Numerical calculation of the two-phase flow in a microchannel was carried out. HS-MAC and PLIC-VOF algorithms and CSF model were employed. The program developed in the present study could capture the sharp interface well. Water and an organic fluid were injected from the two lateral channels and led into the main channel. The segment of each liquid was produced alternatively and periodically. In the present calculation, the length of each fluid was almost equal and unchanged. The flow mode is almost independent of the contact angle which is smaller than 90°. According to the dimensional analysis, the Capillary number was concluded to be important in this phenomena. As Capillary number becomes large, the segment length of each fluid becomes small. The T-typed microchannel provides the shorter segment in the present conditions. The segment length depends on the junction angle.
