采棉机采头吹风管流动性能仿真分析与优化

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Abstract： Toavoid blockages in thecotonconveyingchannelofthecoton pickerand improve theconveying eficiencyofthe air delivry system，a CFD simulation modelof theflow performance ofthe picking head blowing tube was established using STAR-CCM + .Theaccuracyofthesimulationmodelwas verifiedthroughtesting oftheairdeliverysystem，andtherelative error of the simulation model was determined to be less than 5% . On this basis，an automated integrated process for sampling head simulation wasestablished，andtheinfluenceoftheoutletstructuralparametersoftheblowing pipeontheblowingspeed was analyzedbasedontheoptimizedLatinsquareexperimentaldesigmethod.Then，aneuralnetworkmodelwasappliedtoconstruct areducedordermodelfortheflow performanceofthesamplinghead，andthestructuralparameters wereoptimizedandimproved. The optimization results show that the pressure loss of the blowing pipe increases by 0.2% ，and that the average wind speed of the front blowing outlet increases by 10.9% These results provideatheoreticalbasis for the optimized design ofthe header blowpipe.

Key Words： Cotton picker; Blowpipe; CFD; Reduced order model; Optimization

doi：10.13620/j.cnki.issn1007-7782.2025.01.012

中图分类号： S225.91+1 文献标识码：A

0引言

随着农业机械化的发展，采棉机在新疆地区得到了普遍应用，截止2023年底，新疆兵团棉花耕种收综合机械化率达到 98.7%11 。（剩余4863字）