Study Of Escaping Of Grasshoppers In The Capturing Process Of Pneumatic Grasshoper Trapper

To study the escaping problem at the both side of Pneumatic Grasshopper Trapper in the capturing process and improve the suction trap rate, firstly, measure the flow field of Head-suck in Pneumatic Grasshopper Trapper. Secondly, introduce the computer's simulation in the analysing about flow field of Head-suck, and making use of RNG k ?εturbulent model of CFD software to numerical simulation, the results of the simulation are in concordance with the experiment dates, and then the reliability of the numerical simulation is proved, a powerful basis for ameliorating of the Pneumatic Grassland Locust suction trap machine based on the CFD technology is provided. Thirdly, observing the level surface'flow field, analysing the simulation and experiment dates, we found the escape reason: The range of airflow is small at both side, the rapidity of airflow is low. Finally, aim at the reason and use of simulation method, improve the Head-suck of Pneumatic Grasshopper Trapper. Educing the best angle is 15°. Consequently, control the locust's escaping at both side of Head-suck and improve the suction trap rate of Pneumatic Grasshopper Trapper.