Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate
Eccentric silo is an extremely common type of silo, but it is still unclear how to accurately control the discharge by adjusting eccentric orifices, limiting the application and development of eccentric silo. In this study, the rice particle discharging process on silos with different eccentricities...
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MDPI AG
2025-02-01
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| author | Yinglong Wang Yanlong Han Anqi Li Hao Li Haonan Gao Ze Sun Shouyu Ji Zhuozhuang Li Fuguo Jia |
| author_facet | Yinglong Wang Yanlong Han Anqi Li Hao Li Haonan Gao Ze Sun Shouyu Ji Zhuozhuang Li Fuguo Jia |
| author_sort | Yinglong Wang |
| collection | DOAJ |
| description | Eccentric silo is an extremely common type of silo, but it is still unclear how to accurately control the discharge by adjusting eccentric orifices, limiting the application and development of eccentric silo. In this study, the rice particle discharging process on silos with different eccentricities was simulated by the discrete element method (DEM), and the influence mechanism of orifice eccentricity on silo discharge rate was analyzed. The results show that eccentricity has a direct influence on the particle volume fraction and vertical velocity that determine the discharge rate of the silo. In fully eccentric silo, it is not easy for particle flow to achieve balance, particles will pass through outlet with more kinetic energy. Moreover, continuous force network cannot be formed between particles with shear resistance, resulting in weak interlocking action between particles. The orientation of particle in fully eccentric silo is more vertical, especially near the silo wall, which will produce larger local particle volume fraction above the orifice. When the eccentricity exceeds the critical eccentricity, the sparse flow area on the discharge orifice becomes larger, and the particle acceleration area increases accordingly. Research findings may offer valuable insights for the accurate control of discharge rate of eccentric silo, as well as for optimizing silo design. |
| format | Article |
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| institution | DOAJ |
| issn | 2077-0472 |
| language | English |
| publishDate | 2025-02-01 |
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| series | Agriculture |
| spelling | doaj-art-daf7c0210aca4369b7d1bbfd642c76902025-08-20T02:59:07ZengMDPI AGAgriculture2077-04722025-02-0115549010.3390/agriculture15050490Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge RateYinglong Wang0Yanlong Han1Anqi Li2Hao Li3Haonan Gao4Ze Sun5Shouyu Ji6Zhuozhuang Li7Fuguo Jia8College of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaCollege of Engineering, Northeast Agricultural University, Harbin 150030, ChinaEccentric silo is an extremely common type of silo, but it is still unclear how to accurately control the discharge by adjusting eccentric orifices, limiting the application and development of eccentric silo. In this study, the rice particle discharging process on silos with different eccentricities was simulated by the discrete element method (DEM), and the influence mechanism of orifice eccentricity on silo discharge rate was analyzed. The results show that eccentricity has a direct influence on the particle volume fraction and vertical velocity that determine the discharge rate of the silo. In fully eccentric silo, it is not easy for particle flow to achieve balance, particles will pass through outlet with more kinetic energy. Moreover, continuous force network cannot be formed between particles with shear resistance, resulting in weak interlocking action between particles. The orientation of particle in fully eccentric silo is more vertical, especially near the silo wall, which will produce larger local particle volume fraction above the orifice. When the eccentricity exceeds the critical eccentricity, the sparse flow area on the discharge orifice becomes larger, and the particle acceleration area increases accordingly. Research findings may offer valuable insights for the accurate control of discharge rate of eccentric silo, as well as for optimizing silo design.https://www.mdpi.com/2077-0472/15/5/490eccentric siloorifice eccentricitydischarge rateDEM |
| spellingShingle | Yinglong Wang Yanlong Han Anqi Li Hao Li Haonan Gao Ze Sun Shouyu Ji Zhuozhuang Li Fuguo Jia Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate Agriculture eccentric silo orifice eccentricity discharge rate DEM |
| title | Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate |
| title_full | Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate |
| title_fullStr | Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate |
| title_full_unstemmed | Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate |
| title_short | Numerical Analysis of Influence Mechanism of Orifice Eccentricity on Silo Discharge Rate |
| title_sort | numerical analysis of influence mechanism of orifice eccentricity on silo discharge rate |
| topic | eccentric silo orifice eccentricity discharge rate DEM |
| url | https://www.mdpi.com/2077-0472/15/5/490 |
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