水资源与水工程学报Issue(3)：29-33,5.DOI:10.11705/j.issn.1672-643X.2014.03.06
横掠管束周期性充分发展通道内流动与换热的非线性特性
Nonlinear characteristics of periodically fully developed flow and heat transfer in cross-flow tube bundle channel
摘要
Abstract
The model of cross-flow tube bundle channel look like column body of surrounding flow in wa-ter conservancy project or tubes of surrounding flow in heat exchange .The paper introduced periodic boundary condition to simplify model ,and investigated flow field and temperature field in different values of Re by numerical simulation .It is discovered that with the increase of Re number,flow changes from sta-ble to the appearance of bigger vortex ,then becomes smaller and then grow bigger ,which is a circulation process.The reason is that with the increase of Re number,the inertial force, viscous force and micro vor-tex of continuous generation combine action .The process of heat transfer are closely related to flow .In addition , the change trend of the speed at monitoring point with time is investigated , it is found that the flow exhibits nonlinear properties .With the increase of Re number, the numerical solution from steady state to periodic oscillation and finally develop into a state of chaos .关键词
横掠管束/流场/温度场/周期性边界条件/非线性特性Key words
bundle corss-flow tube/flow field/temperature field/periodic boundary condition/nonlin-ear characteristics分类
能源科技引用本文复制引用
雍青青,杨茉,苏丹,王治云,王金龙,徐文栋..横掠管束周期性充分发展通道内流动与换热的非线性特性[J].水资源与水工程学报,2014,(3):29-33,5.基金项目
国家自然科学基金项目（51306121）；国家自然科学基金项目（51276118）；国家自然科学基金海外合作基金项目 （）
