摘要
研究气密性良好、存在刚性孔、存在柔性孔等3种情况下的模拟粮仓在不同初始压强下的压力半衰期变化情况。得出:①在相同孔径下,粮仓压力半衰期的时间随着初始压强的减小而减小;②对孔径、初始压强、压力半衰期进行回归分析,得出压力半衰期与初始压强、孔径二者均成二阶多项式的关系。500Pa^250Pa的半衰期与孔径关系可表达为:y=756.63x2-1087.7x+485.77,R2=0.9864。
In different original pressures, rules of pressure decay was studied in three types of simulation grain warehouses, including warehouse with good airtightness, rigid hole and flexible hole respectively. The resuits showed： （1） under the same diameter of holes, the half--life decay of pressure of warehouse would be reduced with the original pressure decreased. （2） by linear regression analysis on diameter of holes, initial pressures and pressure half--life, it presented the second--order polynomial correlation between pressure half-life and the others two factors respectively. The regression formula of half--life （from 500 Pa to 250 Pa） and hole diameter was built as y= 756.63x^2-1087. 7x＋485.77, and R^2=0. 9864.
出处
《粮食储藏》
2009年第6期15-18,共4页
Grain Storage
关键词
粮仓
气密性
半衰期
线性回归
warehouse, airtightness, half--life, linear regression
