Simulation and improvement of inner flow field of alfalfa seed harvester collection device

Hui Zhao; Pengrong Xu; Yanjun Li

doi:10.6180/jase.202108_24(4).0018

Simulation and improvement of inner flow field of alfalfa seed harvester collection device

Computer Science and Information Engineering

Hui Zhao ^1,2 , Pengrong Xu ³ , and Yanjun Li This email address is being protected from spambots. You need JavaScript enabled to view it. ⁴

¹Tianjin Light Industry Vocational Technical College, 300350 Tianjin, China
²China Light Industry Precision Mold Engineering Technology Research Center,300350 Tianjin, China
³Tianjin AnZhen Technology Company, 300350 Tianjin, China
⁴Chinese Academy of Agricultural Mechanization Sciences, 100083 Beijing, China

Received: January 29, 2021
Accepted: April 25, 2021
Publication Date: August 1, 2021

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202108_24(4).0018

ABSTRACT

Based on the CFD simulation technology, the internal airflow field of the alfalfa seed harvester has been simulated and analyzed. The results showed that there was an uneven velocity distribution problem for the existing collection device, and this problem led to the increase of the seed loss rate. In order to optimize the internal airflow field of the alfalfa seed harvester, the air distributor of the existing device was adjusted: the length of the left air distributor was 200 mm, the installation angle was 15 °, the length of the right air distributor was 170 mm, and the installation angle was 20 °. The indoor experiment was carried on the internal airflow field of the adjusted structure, and the results showed that the uneven velocity distribution had been significantly improved. The improved device can effectively enhance the pneumatic conveying capacity of the acquisition device.

Keywords: Alfalfa Seed Harvester; Pneumatic conveying; Collection device; Internal airflow field

REFERENCES

[1] Ruixuan Xu, Haiming Zhao, Guibo Liu, Yongliang You, Lei Ma, Nan Liu, and Yingjun Zhang. Effects of nitrogen and maize plant density on forage yield and nitrogen uptake in an alfalfa–silage maize relay intercropping system in the North China Plain. Field Crops Research, 263, 2021. ISSN 03784290.
[2] Yadong Wang, Chun Liu, Pengfei Cui, and Derong Su. Effects of partial root-zone drying on alfalfa growth, yield and quality under subsurface drip irrigation. Agricultural Water Management, 245, 2021. ISSN 18732283.
[3] Musen Wang, Marcia Franco, Yimin Cai, and Zhu Yu. Dynamics of fermentation profile and bacterial community of silage prepared with alfalfa, whole-plant corn and their mixture. Animal Feed Science and Technology, 270:114702, 2020. ISSN 03778401.
[4] A Iannucci, N. Di Fonzo, and P. Martiniello. Alfalfa (Medicago sativa L.) seed yield and quality under different forage management systems and irrigation treatments in a Mediterranean environment. Field Crops Research, 78(1): 65–74, 2002. ISSN 03784290.
[5] Wayne K. Coblentz, Matthew S. Akins, and Burney A. Kieke. Storage characteristics and nutritive value of moist large-round bales of alfalfa or alfalfa–grass hay treated with a propionic acid–based preservative*. Applied Animal Science, 36(4):455–470, 2020. ISSN 25902865.
[6] Wenguang Jia and Jinglu Yan. Pressure drop characteristics and minimum pressure drop velocity for pneumatic conveying of polyacrylamide in a horizontal pipe with bends at both ends. Powder Technology, 372:192–203, 2020. ISSN 1873328X.
[7] Peng Zhang, Yao Yang, Zhengliang Huang, Jingyuan Sun, Zuwei Liao, Jingdai Wang, and Yongrong Yang. Machine learning assisted measurement of solid mass flow rate in horizontal pneumatic conveying by acoustic emission detection. Chemical Engineering Science, 229, 2021. ISSN 00092509.
[8] Li Tsung Sheng, Yi Lun Xiao, Shu San Hsiau, Chih Peng Chen, Po Shen Lin, and Kuo Kuang Jen. A study of pneumatic conveying with high-density AM-using metal powder in a pipe bend. International Journal of Mechanical Sciences, 181, 2020. ISSN 00207403.
[9] A Bianchini, C Saccani, and M. Simoni. Dense phase pneumatic conveying for atomized slip in the ceramics industry: Pilot plant design and experimental tests. Powder Technology, 355:495–503, 2019. ISSN 1873328X.
[10] Ingrid Bokn Haugland, Jana Chladek, and Maths Halstensen. Monitoring of scaling in dilute phase pneumatic conveying systems using non-intrusive acoustic sensors – A feasibility study. Advanced Powder Technology, 30(8): 1634–1641, 2019. ISSN 15685527.
[11] Benjamin A. Kotzur, Robert J. Berry, Stefan Zigan, Pablo García-Triñanes, and Michael S.A. Bradley. Particle attrition mechanisms, their characterisation, and application to horizontal lean phase pneumatic conveying systems: A review, 2018. ISSN 1873328X.
[12] Nir Santo, Dimitry Portnikov, and Haim Kalman. Experimental study on particle velocity and acceleration length in pneumatic and hydraulic conveying systems. Powder Technology, 383:1–10, 2021. ISSN 1873328X.
[13] Faisal Abbas, Lijuan Wang, and Yong Yan. Mass flow rate measurement of solids in a pneumatic conveying pipeline in different orientations. Measurement: Sensors, 10-12:100021, 2020. ISSN 26659174.
[14] Milad Taghavivand, Poupak Mehrani, Andrew Sowinski, and Kwangseok Choi. Electrostatic charging behaviour of polypropylene particles during pulse pneumatic conveying with spiral gas flow pattern. Chemical Engineering Science, 229, 2021. ISSN 00092509.
[15] Hemin Zhao and Yongzhi Zhao. Cfd-dem simulation of pneumatic conveying in a horizontal pipe. Powder Technology, 373:58–72, 2020.
[16] Maria Colombo and Silja Haffter. Global regularity for the hyperdissipative Navier-Stokes equation below the critical order. Journal of Differential Equations, 275:815–836, 2021. ISSN 10902732.