文献类型：期刊文献

中文题名：平板上的定常与非定常流动

英文题名：Steady and Unsteady Flows on a Flat Plate

作者：孙志仁[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2020

卷号：37

期号：4

起止页码：149

中文期刊名：化工高等教育

外文期刊名：Higher Education in Chemical Engineering

收录：国家哲学社会科学学术期刊数据库

语种：中文

中文关键词：非定常流动;高斯误差函数;流动状态;临界边界厚度;临界时间;微团模型

外文关键词：Unsteady flow;Gauss error function;flow state;critical boundary thickness;critical time;micro-cluster model

摘要：文章推导了平板突然启动后的非定常流动规律符合高斯误差函数,借鉴平板边界层流动规律,获得了求解平板非定常流动的判别依据,通过临界边界厚度,定义了临界时间,运用分子微团与涡流微团模型探讨了流动状态变化过程。
In this paper,it is deduced that the unsteady flow law of the plate after sudden start-up accords with Gauss error function.Referring to the flow law of plate boundary layer,the discriminant basis for solving unsteady flow of flat plate is obtained.The critical time is defined by the critical boundary thickness.Molecular and eddy microcluster models are used to investigate the process of flow state variation.