Influence of core box vents distribution on flow dynamics of core shooting process based on experiment and numerical simulation

Ni, Chang-jiang; Lu, Gao-chun; Zhang, Qingdong; Jing, Tao; Wu, Jiun-Huei Proty; Yang, Lin-long; Wu, Qin-fang

doi:10.1007/s41230-016-5105-z

Cited by 13 publications

(7 citation statements)

References 10 publications

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“…The infiltration casting technology can be traced back to 1985, 28 and it has been used to manufacture CPRIMC in industry since the beginning of the twenty-first century. In 2002, the Magotteaux Company in Belgium 29 invented X-win composite technology, i.e.…”

Section: Research Status Of Cprimc Surface Compositesmentioning

confidence: 99%

Recent developments in fabrication of ceramic particle reinforced iron matrix wear resistant surface composite using infiltration casting technology

Tang

Gao

2014

Ironmaking & Steelmaking

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Ceramic particle reinforced iron matrix composites are one of the most promising wear resistant materials for tough conditions. Up to now, varieties of methods have been developed to fabricate this material, e.g. the infiltration casting process, which is especially beneficial to prepare the surface composite. Based on this method, a honeycomb structure of surface composite has been designed aiming to increase its toughness and interface strength. Moreover, zirconia toughened alumina (ZTA) is a perfect choice of reinforcement for wear resistant composite under high impact. The wettability between ZTA particle and iron matrix is a key factor to determine the performance of composite; the wettability can be improved by introducing active elements into their interface.

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Section: Research Status Of Cprimc Surface Compositesmentioning

confidence: 99%

Recent developments in fabrication of ceramic particle reinforced iron matrix wear resistant surface composite using infiltration casting technology

Tang

Gao

2014

Ironmaking & Steelmaking

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“…At the compressing stage, the air escapes through vents and then the sand compresses adequately. 3,4 Due to the complexity of the core shooting process, the mechanism of filling and compressing stage still needs a better understanding. The computational fluid dynamic (CFD) has become a powerful tool to provide both qualitative and quantitative insight into complex gas-solid flows of sand shooting process.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Sand Filling Process and Analysis of Flow Behavior with Different Binder Ratio

et al. 2019

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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.

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“…Backfilling ultrafine particle distribution characteristics were imported into the initial parameters of backfilling transportation using the Rosin-Rammler particle size distribution function. The model was established based on the kinetic theory of granular flow (KTGF) [10,11], considering the interactions between dispersed phase particles. The interphase drag model was refined by user-defined functions during the process of calculation.…”

Section: Introductionmentioning

confidence: 99%

Particle Flow Characteristics and Transportation Optimization of Superfine Unclassified Backfilling

Zhou

Gao

2017

Minerals

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Abstract:In order to investigate the high volume fraction problem of the solid phase in superfine unclassified backfilling pipeline transportation, characteristic parameters were obtained by fitting to test data with an R-R particle size distribution function; then, a Euler dense-phase DPM (Discrete phase model) model was established by applying solid-liquid two-phase flow theory and the kinetic theory of granular flow (KTGF). The collision and friction of particles were imported by the UDF (User-define function) function, and the pipeline fluidization system, dominated by interphase drag forces, was analyzed. The best concentration and flow rate were finally obtained by comparing the results of the stress conditions, flow field characteristics, and the discrete phase distributions. It is revealed that reducing the concentration and flow rate could control pressure loss and pipe damage to a certain degree, while lower parameters show negative effects on the transportation integrity and backfilling strength. Indoor tests and field industrial tests verify the reliability of the results of the numerical simulations. Research shows that the model optimization method is versatile and practical for other, similar, complex flow field working conditions.

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Influence of core box vents distribution on flow dynamics of core shooting process based on experiment and numerical simulation

Cited by 13 publications

References 10 publications

Recent developments in fabrication of ceramic particle reinforced iron matrix wear resistant surface composite using infiltration casting technology

Recent developments in fabrication of ceramic particle reinforced iron matrix wear resistant surface composite using infiltration casting technology

Simulation of Sand Filling Process and Analysis of Flow Behavior with Different Binder Ratio

Particle Flow Characteristics and Transportation Optimization of Superfine Unclassified Backfilling

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