水稻动态及静态谷层气流阻力的试验研究  

Resistance to Concurrent and Counter Airflow of Paddy in Static and Dynamic Conditions

作　　者：夏吉庆[1] 郑先哲[1] 王成芝[1] 

机构地区：[1]东北农业大学

出　　处：《农业工程学报》1998年第1期200-203,共4页Transactions of the Chinese Society of Agricultural Engineering

摘　　要：应用二次Ｄ—饱和最优实验设计的方法，探讨了水稻在流动过程中顺、逆流通风的谷层气流阻力与风速、谷层厚度、粮食流动速度的关系，通过回归分析建立了动态谷层气流阻力的数学模型，对动、静态谷层气流阻力进行了对比分析，对水分的影响作了单因素试验分析，通过算术平均求出了理论公式（ΔＨ＝ａＬｇｗ＋ｂＬｇｗＶ２）的动态计算系数ａ和ｂ。The method of quadratic D saturation optimizing design was to probe into the dependence of air resistance on air velocity, grain layer thickness and the flow rate of grain when paddy was flowing in the concurrent and counter flow. The pattern of dynamic air resistance was established by regressive analysis. The dynamic air resistance of grain layer was contrasted and analysed with static one. Single factor experiment was done about the impact of grain moisture. The static theoretical formulation was revised when it is applied to dynamic grain layer.

关 键 词：水箱 气流阻力 谷层 干燥 干燥机 

分 类 号：S511.09[农业科学—作物学]