Tseng F.-G.Yang I.-D.Lin K.-H.Ma K.-T.MING-CHANG LUTseng Y.-T.Chieng, C.-C.C.-C.Chieng2019-09-102019-09-10200209244247https://scholars.lib.ntu.edu.tw/handle/123456789/424542This study reports that the success of reservoir-filling strongly depends on the designs of the hydrophilic wall surface and the well shape/size of the flow network. The idea is illustrated both by experiments and numerical simulations: micro-particle-image-velocimetry (£g-PIV) system is setup to monitor the process of a liquid slug moving in and out of the micro-reservoir and numerical computations are performed by solving first principle equations to provide the details of the flow process. The cross-check between measurements and computations validate the computations. Numerical computations solve conservation equations similar to homogeneous flow model used in two phase flow calculation in cooperation with volume-of-fluid (VOF) interface tracking methodology and continuum surface force (CSF) model. The simulations show that wall surface property as hydrophilic/hydrophobic is a dominating factor in filling processes of reservoirs of various shapes. A flow system consisting of micro-channels and micro-wells is fabricated using MEMS technology to demonstrate the filling process and validate numerical simulation. The agreement between measurement and computation helps to fully understand the process.Computational modelHydrophilicMicro-reservoirSurface tensionconference paper10.1016/S0924-4247(01)00826-32-s2.0-0036544327https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036544327&doi=10.1016%2fS0924-4247%2801%2900826-3&partnerID=40&md5=ad40c5da92319d5a68dd89d6653659b0