Variational criterion for dissipative structures dominated by coupled mechanisms  

作　　者：Jinghai Li Wei Ge Zhongdong Zhang Jie Yuan 

机构地区：[1]Chinese Acad Sci, Inst Chem Met, Multiphase React Lab, Beijing 100080, Peoples R China [2]Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China

出　　处：《Chinese Science Bulletin》1999年第4期323-327,共5页

摘　　要：Abstract By analyzing the similarity between the viscosity-inertia compromise for single fluid in turbulent pipe flow and the particle-fluid compromise in gas-solid fluidization, it is deduced that the variational criterion for dissipative structures dominated jointly by two sub-mechanisms (for instance, viscous elfect and inertial effect in turbulent flow; particle movement and fluid movement in fluidization) could be physically expressed as mutually constrained extremum between the individual extremum tendencies of the sub-mechanisms, and could thus be mathematically formulated as a two-objective optimization problem.By analyzing the similarity between the viscosity-inertia compromise for single fluid in turbulent pipe flow and the particle-fluid compromise in gas-solid fluidization, it is deduced that the variational criterion for dissipative structures dominated jointly by two sub-mechanisms (for instance, viscous effect and inertial effect in turbulent flow; particle movement and fluid movement in fluidization) could be physically expressed as mutually constrained extremum between the individual extremum tendencies of the sub-mechanisms, and could thus be mathematically formulated as a two-objective optimization problem.

关 键 词：文竹 

分 类 号：O368[理学—流体力学]