Design and optimization of an umbrella-type shield based on 3D CFD simulation technology

Li, Longfei (avtor), He, Xin (avtor), Jiao, Taowei (avtor), Xiao, Yumeng (avtor), Wei, Xipan (avtor), Li, Wei (avtor)

Mechanical shields can effectively alleviate the problems of low pesticide utilization and severe environmental pollution. This manuscript uses a computational fluid dynamics (CFD) method to investigate the anti-drift mechanism of mechanical shields, study the airflow forms around them, and establish an accurate simulation model. The aerodynamic characteristics of six shields were studied, and their anti-drift effect was compared. Then, the size and working parameters were optimized using the response surface methodology (RSM). Mechanical shields can significantly improve the fog droplet deposition rate (DR) compared with the conventional spray method (no shield), among which the umbrella-type shield has the best effect; optimizing the size and selecting suitable working parameters can increase the DR to 77.31 %. The field trial showed that the DR of the conventional spray method was reduced by 31.9 % at 5 m/s compared with 3 m/s, while the DR of the shield spray method was reduced by only 3.6 % at 5 m/s compared with 3 m/s, which proved the excellent performance of the mechanical shields. The field trial results were consistent with the CFD simulation, and the relative deviation of the DR between the two was within 4 %, so the accuracy and reliability of the CFD simulation model were proved.

• Jezik: Angleški jezik
• Ključne besede: mechanical shield, anti-drift, CFD simulation
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: 11 str.
• Številčenje: Vol. 69, no. 9/10
• PID: 20.500.12556/RUL-151864
• UDK: 004.4
• ISSN pri članku: 0039-2480
• DOI: 10.5545/sv-jme.2023.644
• COBISS.SI-ID: 168834563
• Datum objave v RUL: 23.10.2023

Gradivo je del revije

• Naslov: Strojniški vestnik
• Skrajšan naslov: Stroj. vestn.
• Založnik: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Zasnova in optimizacija dežnikastega ščita s tehnologijo simulacij 3D CFD
• Ključne besede: mehanski ščit, mehanizem za preprečevanje drifta, računalniška dinamika fluidov, aerodinamične lastnosti, stopnja odlaganja kapljic, metoda odzivnih površin