农业机械学报2011，Vol.42Issue(10)：95-100,6.
射流混药装置面积比对混药均匀性的影响
Effect of Area Ratio on Mixing Homogeneity in Jet-mixing Apparatus
摘要
Abstract
Aimed at homogeneity principle of water mix with pesticide in the jet-mixing apparatus,a mathematical model for solving the interior concentration field was established,CFD software called Fluent was used to calculate the field. Time-average mass fraction of pesticide was obtained. Intensity of segregation was introduced to quantitative evaluate the mix degree of water and pesticide. The water was mixed with pesticide uniformly when intensity of segregation was 0. 05. As the increasing of area ratio,the shortest mixing distance decreased with the area ratio me [2.56,4.00]. The mixing performance of jet-apparatus with m-3.06 was better than the jet-mixing apparatus with m = 2. 56 and m =4. 00. The diffusive mixing zone appeared after the maximum turbulent intensity average rate decreased by 14. 96% . And the coordinate interval was X ∈ [ ( - 13. 85m + 111. 37 ) mm,116. 5 mm ]. Therefor,when measure the concentration in jet-mixing apparatus by experiment,it should according the coordinate interval and area ratio to choose the appreciate concentration measurement point.关键词
混药装置/面积比/离析度/计算流体动力学Key words
Mixing apparatus/Area ratio/Intensity of segregation/Computational fluid dynamics分类
农业科技引用本文复制引用
邱白晶,徐溪超,邓斌,杨宁,姜国微,吴春笃..射流混药装置面积比对混药均匀性的影响[J].农业机械学报,2011,42(10):95-100,6.基金项目
国家高技术研究发展计划(863计划)资助项目(2008AA100905、2006AA10A305 -3)、国家自然科学基金资助项目(30571240)、江苏省属高校自然科学重大基础研究项目(10KJA470007)和高等学校博士学科点专项科研基金资助项目(20093227110008) （863计划）
