Test of Suspension Velocity of Granular Fertilizer Based on EDEM-Fluent Coupling

被引：0
|
作者：
Wen X. [1 ,2 ]
Jia H. [1 ,2 ]
Zhang S. [1 ,2 ]
Yuan H. [1 ,2 ]
Wang G. [1 ,2 ]
Chen T. [1 ,2 ]
机构：
[1] College of Biological and Agricultural Engineering, Jilin University, Changchun
[2] Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2020年 / 51卷 / 03期
关键词：
Computational fluid dynamics; Discrete element method; Gas-solid coupling; Granular fertilizer; Numerical simulation; Suspension velocity;
D O I：
10.6041/j.issn.1000-1298.2020.03.008
中图分类号：
学科分类号：
摘要：
Suspension velocity is one of the main aerodynamic characteristics of materials, and it is an important basic data for the design of pneumatic conveying system. A reference for the design of pneumatic fertilization device was provided, and three kinds of granular fertilizers of large granular urea, diammonium phosphate and potassium sulfate were taken as test objects. The suspension velocity of materials was simulated by the coupling method of computational fluid dynamics and discrete element method. The Lagrangian model was used to simulate the gas-solid two-phase flow. The experimental results showed that the suspension velocity of large granular urea was 7.21~12.97 m/s, the suspension velocity of diammonium phosphate was 7.68~12.48 m/s, and the suspension velocity of potassium sulfate was 11.09~18.15 m/s. Through the bench test, the suspension velocity of large granular urea was 6.68~12.48 m/s, diammonium phosphate was 7.22~11.96 m/s, potassium sulfate was 9.46~17.81 m/s, the relative errors were 5.3%, 5.1% and 7.2%, respectively. When the volume fraction of granular fertilizer was 1.0%, 3.5%, 6.0% and 8.5%, the suspension speed of granular fertilizer group was measured. The suspension speed of granular fertilizer group was decreased with the increase of volume fraction. Under different volume fractions of granular fertilizer, the ratio of simulation test results to real test results was approximately constant, which was supposed to be due to the influence of particle sphericity on suspension speed. The results showed that the correction coefficient of the suspension velocity of large granular urea was 0.90, that of diammonium phosphate was 0.96, and that of potassium sulfate was 0.84. Therefore, the simulation test of particle suspension velocity through fluid solid coupling simulation had a high accuracy, which verified the feasibility of the method of measuring the suspension velocity of materials based on EDEM-Fluent gas-solid two-phase flow coupling simulation, and provided a new method for measuring the suspension velocity of agricultural materials. © 2020, Chinese Society of Agricultural Machinery. All right reserved.
引用
收藏
页码：69 / 77
页数：8
相关论文
共 30 条
  • [11] Yu X., Geng D., Du R., Et al., Design and experiment of wheat planter by pneumatic conveying with no-tillage, Transactions of the Chinese Society for Agricultural Machinery, 49, pp. 141-148, (2018)
  • [12] Dai Y., Luo X., Wang Z., Et al., Design and experiment of rice pneumatic centralized seed distributor, Transactions of the CSAE, 32, 24, pp. 36-42, (2016)
  • [13] Hou H., Cui Q., Guo Y., Et al., Design and test of air-sweeping suspension velocity testing device for cleaning threshed materials of grain and oil crops, Transactions of the CSAE, 34, 16, pp. 43-49, (2018)
  • [14] Wang W., Wang Y., Tian Z., Et al., Research on design and experimental of material suspension velocity bench, Journal of Chinese Agricultural Mechanization, 37, 6, (2016)
  • [15] Ma Z., Li Y., Xu L., Et al., Summarize of particle movements research in agricultural engineering realm, Transactions of the Chinese Society for Agricultural Machinery, 44, 2, pp. 22-29, (2013)
  • [16] Gao X., Xu Y., Yang L., Et al., Simulation and experiment of uniformity of venturi feeding tube based on DEM-CFD coupling, Transactions of the Chinese Society for Agricultural Machinery, 49, pp. 92-100, (2018)
  • [17] Yang Q., Li Z., Li H., Et al., Numerical analysis of particle motion in pneumatic centralized fertilizer distribution device based on CFD-DEM, Transactions of the Chinese Society for Agricultural Machinery, 50, 8, pp. 81-89, (2019)
  • [18] Li L., Meng Z., Wang X., Et al., Simulation analysis of gas-solid two phase flow in pneumatic conveying fertilizer feeder of rice fertilizer applicator, Transactions of the Chinese Society for Agricultural Machinery, 49, pp. 171-180, (2018)
  • [19] Martina C.L., Bouvarda D., Shimab S., Study of particle rearrangement during powder compaction by the discrete element method, Journal of the Mechanics and Physics of Solids, 51, 4, pp. 667-693, (2003)
  • [20] Cleary P.W., Predicting charge motion, power draw, segregation and wear in ball mills using discrete element methods, Minerals Engineering, 11, 11, pp. 1061-1080, (1998)
123