报告题目：A Ball Falling in Non Newtonian Fluids

报告时间：2021-10-13 16:00 - 17:00

报告人：吴宗敏 教授 复旦大学 

线上会议：腾讯会议（663 555 295）

进入会议：https://meeting.tencent.com/dm/NHb5OkTP5elW

主办单位：国家天元数学中部中心  武汉大学数学与统计学院

Abstract: Based on the data from the high speed video of a ball falling in non Newtonian fluids, the dynamical behaviors is discussed in this talk. A new dynamic equation is leaned by LASSO(Least absolute shrinkage and selection operator) only with 4 terms that v(v"+d)+v"(dv"+1)=0. The velocity v is a Blaschke product of the Jerk v". Numerical simulation validated that the equation is a mesoscopic description of the dynamical behaviors of a ball falling in non Newtonian fluids. Furthermore, the random phenomena of the Blasheke product is explained in both of mathematical and physical point of view.