作　　者： ;

机构地区： 东北农业大学

出　　处： 《农业工程学报》 1996年第3期12-15,共4页

摘　　要： 根据阻力系数ＣＤ＝ｆ（Ｒｅ）的实验规律列出球体沉降中的阻力项，并建立微分方程，求得其解析解。经用π试验设计的实验进行验证：球体沉降理论公式的解与实测值间的误差为２％～２０％，而原理论公式的解的误差为１３６％～２４９％，证实了球体沉降理论公式的普遍意义。 Based on the Diagram of Resistance Coefficient C D versus Re , a resistance term and differential equation were formulated. Its analytical solution proved consistent with the experiment results with the error ranging from 2 %～20 %, while the solution of original differential equation has the error ranging from 136 %～249 %. That experiment was conducted with π-Testing Design. The settling equation of a sphere in fluid proved its generality in the sphere subject to resistance figuring in different ranges.

关 键 词： 球体 粘性液体 沉降时间

领　　域： [理学] [理学]