基于PNK理论的颗粒群Boycott效应研究

Research on Boycott effect of the particles based on PNK theory

科学家Boycott发现草酸化或去纤维化血球沉降在倾斜容器中比在垂直容器中更快,这就是所谓的Boycott效应.本文衍生探究不溶固体颗粒在装有蒸馏水倾斜容器中的沉降是否也会产生Boycott效应以及相关参数影响.利用PNK理论推导出颗粒沉降速率关系式,研究其中影响体系的3个变量,分别为竖直沉降速率、容器底部直径、容器倾斜角度.同时,通过实验探究改变单一变量对沉降速率的影响,与理论计算结果基本吻合.结果表明,不溶固体颗粒也会产生Boycott效应;随着容器倾斜角度增大,颗粒在其中沉降速率先加快后减慢;随着容器底部直径增大,沉降速率与之正相关;随着颗粒垂直沉降速率增大,倾斜沉降速率也与之呈正相关.

The Boycott effect was discovered by Boycott that oxalated or defibrinated blood corpuscles sediment much faster in an inclined tube than in a vertical one.This paper derivatives research whether the sedimentation of insoluble particles in oblique vessel filled with distilled water also has boycott effect and investigate the effect of relevant parameters.Refer to PNK theory to study the influence of the three parameters on the settlement rate that affect the system,namely suspension interface velocity in a vertical container,the width of the container,and the angle of inclination.At the same time,through experiments,the effect of different parameters on sedimentation rate is explored,and compared with the theoretical analysis.The results show that insoluble particles also has boycott effect;as the angle of inclination increases,the sedimentation rate of the particles in it increases first and then slows down;the width of the container and the suspension interface velocity in a vertical container is always positively correlated with the sedimentation rate.