3-D Turbulence Numerical Simulation for the Flow Field of Suction Cylinder-Seeder with Socket-Slots
The flow field has significantly impact on seeding performance in the suction seeding device. A threedimensional, incompressible, viscous, RNG turbulence model and the SIMPLE method were used by computational fluid dynamics(CFD), and the flow fields of suction cylinder-seeder with different sockets radiuses were simulated by Fluent. When vacuum is 4kPa and produc-tivity is 350 trays/h, the simulant results show that pressure is uniform, velocity is stable, energy loss mainly occurs near slots and outlet, and there is less inter-action among socket-slots; The effect of flow field on sockets radius to the cyl-inder isnt significant by contrasting different sockets radiuses on the average turbulent kinetic energy, the average vacuum and the maximum difference of velocity behind slots; The experimental results show that the best seeding per-formance is 84.73％ when the sockets radius is 5.5mm. Although the perform-ance should be improved, but any sockets are never plugged, which shows enough that the seeder is a very promising precision seeding device.
Socket-slot Suction cylinder Flow field Numerical simulation
Yanjun Zuo Xu Ma Long Qi Xinglong Liao
College of Engineering, South China Agricultural University, Guangzhou, P.R. China College of Engineering, South China Agricultural University, Guangzhou, P.R. China Key Laboratory of
国际会议
南昌
英文
1-8
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）