Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling
Core shooting process is the most widely used technique to make sand cores and it plays an important role in the quality of sand cores as well as the manufacture of complicated castings in metal casting industry. In this paper, the flow behavior of sand particles in the core box was investigated syn...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/2317180 |
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| _version_ | 1850210387441483776 |
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| author | Changjiang Ni Gaochun Lu Tao Jing Junjiao Wu |
| author_facet | Changjiang Ni Gaochun Lu Tao Jing Junjiao Wu |
| author_sort | Changjiang Ni |
| collection | DOAJ |
| description | Core shooting process is the most widely used technique to make sand cores and it plays an important role in the quality of sand cores as well as the manufacture of complicated castings in metal casting industry. In this paper, the flow behavior of sand particles in the core box was investigated synchronously with transparent core box, high-speed camera, and pressure measuring system. The flow pattern of sand particles in the shooting head of the core shooting machine was reproduced with various colored core sand layers. Taking both kinetic and frictional stress into account, a kinetic-frictional constitutive correlation was established to describe the internal momentum transfer in the solid phase. Two-fluid model (TFM) simulations with turbulence model were then performed and good agreement was achieved between the experimental and simulation results on the flow behavior of sand particles in both the shooting head and the core box. Based on the experimental and simulation results, the flow behavior of sand particles in the core box, the formation of “dead zone” in the shooting head, and the effect of drag force were analyzed in terms of sand volume fraction (αs), sand velocity (Vs), and pressure variation (P). |
| format | Article |
| id | doaj-art-941e2e48a88947b4abf1e6385e2d3236 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-941e2e48a88947b4abf1e6385e2d32362025-08-20T02:09:47ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/23171802317180Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase ModelingChangjiang Ni0Gaochun Lu1Tao Jing2Junjiao Wu3School of Materials Science and Engineering, Tsinghua University, Beijing 100084, ChinaSuzhou Mingzhi Technology Co., Ltd., Suzhou 215217, ChinaSchool of Materials Science and Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Materials Science and Engineering, Tsinghua University, Beijing 100084, ChinaCore shooting process is the most widely used technique to make sand cores and it plays an important role in the quality of sand cores as well as the manufacture of complicated castings in metal casting industry. In this paper, the flow behavior of sand particles in the core box was investigated synchronously with transparent core box, high-speed camera, and pressure measuring system. The flow pattern of sand particles in the shooting head of the core shooting machine was reproduced with various colored core sand layers. Taking both kinetic and frictional stress into account, a kinetic-frictional constitutive correlation was established to describe the internal momentum transfer in the solid phase. Two-fluid model (TFM) simulations with turbulence model were then performed and good agreement was achieved between the experimental and simulation results on the flow behavior of sand particles in both the shooting head and the core box. Based on the experimental and simulation results, the flow behavior of sand particles in the core box, the formation of “dead zone” in the shooting head, and the effect of drag force were analyzed in terms of sand volume fraction (αs), sand velocity (Vs), and pressure variation (P).http://dx.doi.org/10.1155/2016/2317180 |
| spellingShingle | Changjiang Ni Gaochun Lu Tao Jing Junjiao Wu Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling Advances in Materials Science and Engineering |
| title | Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling |
| title_full | Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling |
| title_fullStr | Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling |
| title_full_unstemmed | Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling |
| title_short | Flow Dynamic Analysis of Core Shooting Process through Experiment and Multiphase Modeling |
| title_sort | flow dynamic analysis of core shooting process through experiment and multiphase modeling |
| url | http://dx.doi.org/10.1155/2016/2317180 |
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