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Numerical Simulation of Mold Filling in Resin Transfer Molding Using Isoparametric Method
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作者 张开鹏 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第1期98-101,共4页
The mold filling of RTM was simulated based on the control volume finite element method (CV/FEM). The formulat ion using isoparametric transformation was discussed in detail and a computation al code based on isopara... The mold filling of RTM was simulated based on the control volume finite element method (CV/FEM). The formulat ion using isoparametric transformation was discussed in detail and a computation al code based on isoparametric technique was developed. The simulation results w ere compared with experimental data. Different isoparametric elements, quadrilat eral and triangular, were compared in the simulation.It demonstrates that the us e of bilinear quadrilateral isoparametric elements in simulating the process can produce a higher precision and cost a less time than the use of triangular ones . 展开更多
关键词 resin transfer molding control volume finite elem ent method isoparametric element
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Numerical investigation of Reynolds number and scaling effects in microchannels flows 被引量:4
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作者 S.A.Si Salah E.G.Filali S.Djellouli 《Journal of Hydrodynamics》 SCIE EI CSCD 2017年第4期647-658,共12页
Compared with conventional channels, experiments of microchannel often exhibit some controversial findings and sometimes even opposite trends, most notably the effects of the Reynolds number and the scaled channel hei... Compared with conventional channels, experiments of microchannel often exhibit some controversial findings and sometimes even opposite trends, most notably the effects of the Reynolds number and the scaled channel height on the Poiseuille number. The experimental method has still been constrained by two key facts, firstly the current ability to machine microstructures and secondly the limitation of measurement of parameters related to the Poiseuille number. As a consequence, numerical method was adopted in this study in order to analyze a flow in two-dimensional rectangular microchannels using water as working fluid. Results are obtained by the solution of the steady laminar incompressible Navier-Stokes equations using control volume finite element method(CVFEM) without pressure correction. The computation was made for channel height ranging from 50 ?m to 4.58 ?m and Reynolds number varying from 0.4 to 1 600. The effect of Reynolds number and channel heights on flow characteristics was investigated. The results showed that the Poiseuille numbers agree fairly well with the experimental measurements proving that there is no scale effect at small channel height. This scaling effect has been confirmed by two additional simulations being carried out at channel heights of 2.5 ?m and 0.5 ?m, respectively and the range of Reynolds number was extended from 0.01 up to 1 600. This study confirm that the conventional analysis approach can be employed with confidence for predicting flow behavior in microchannels when coupled with carefully matched entrance and boundary conditions in the dimensional range considered here. 展开更多
关键词 Rectangular microchannel Poiseuille number control volume finite element method(CVFEM) laminar flow minichannels
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