CAJ | 학술논문

借助CFD专用模拟软件PolyFlow,本文模拟了动态塑化单螺杆挤出机计量段中,聚合物熔体在单螺杆大振幅振动条件下的三维非等温输送流场,研究了大振幅振动力场对挤出产量、功率及螺杆特性的影响。模拟结果显示：振动参数有一个可选范围,当螺杆振动幅值超过该范围而落入横流反向区时,挤出流率将急剧下降,产能比严重降低,螺杆特性变软。
차조CFD전용모의연건PolyFlow,본문모의료동태소화단라간제출궤계량단중,취합물용체재단라간대진폭진동조건하적삼유비등온수송류장,연구료대진폭진동력장대제출산량、공솔급라간특성적영향。모의결과현시：진동삼수유일개가선범위,당라간진동폭치초과해범위이락입횡류반향구시,제출류솔장급극하강,산능비엄중강저,라간특성변연。
A simulation study of melt conveying under effects of large amplitude vibration in a rectangular channel with a cuneate die is done, by using a CFD software package. A situation of 3D non-isothermal flow coupled with transverse flow for a generalized Newtonian fluid is considered. In the study, the effects of large amplitude vibration on extrusion output and power, as well as screw characteristics, are investigated. The simulation results shows that, if vibration amplitude is large enough for transverse flow to change its direction in a vibration period, the output would sharply decrease and the screw characteristics would be weakened.