Simulation of Sand Filling Process and Analysis of Flow Behavior with Different Binder Ratio
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Core shooting process has a great influence on the quality of sand cores. At present, there are two computational fluid dynamic models applied to simulate the hydrodynamics of core shooting process. In this paper, a two-fluid model (TFM) simulation is made on fluid dynamic analysis. With validation of experimental results and discrete particle model (DPM) simulations, the TFM is able to predict a reasonable flow behavior of sand particles by gas dynamic pressure analysis. Residual gas distribution of sand filling process is analyzed and a good agreement is achieved between air volume fraction simulation based on TFM and experimental results. A comparison between different binder ratios is made. The binder ratio has a significant effect on sand hydrodynamic behavior and the sand volume fraction.
Keywordssand core shooting two-fluid model flow behavior pressure distribution binder ratio
This research was financially supported by the National Nature Science Fund Projects, China (no. 51775205), and State Key Laboratory of Materials Processing and Die and Mould Technology Research Project (2015-2017).
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