内通道流场与光场能量耦合的数值模拟  

Model for the Optical Field and Fluent Field Coupling Effects

作　　者：孙运强[1,2,3] 习锋杰[1,2,3] 许晓军[1] 刘顺发[2] 王继红[2] 陈洪斌[2] 陆启生[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073 [2]中国科学院光电技术研究所,四川成都610209 [3]中国科学院研究生院,北京100049

出　　处：《中国激光》2011年第2期76-80,共5页Chinese Journal of Lasers

基　　金：国防预研基金(51302010207)资助课题

摘　　要：对内通道中的热晕效应问题,完整求解流场与光场的能量耦合方程是一个非常有意义而又亟待解决的研究课题。借助流体力学模拟软件Fluent,通过解耦求解光传输方程和流体力学方程的方法,建立了较为完整的流场与光场耦合相互作用仿真平台。编写用户自定义函数,完成初始流场参数的读取,并进行光传输计算;将计算得到的光能以能量源项的形式添加到流场能量方程中去;借助现有的流场分析软件Fluent,对流场方程进行求解,并转入下一时间步的计算。对横截面为圆形的直管道结构,理论近似计算得到的结果与数值仿真平台计算得到的结果基本一致。For the thermal blooming of the beam path indoor,solving the coupling equations of optical field and Fluent field completely is a meaningful and important subject.By means of segregated solving the coupling equations,a model for simulating the coupling equations is described based on the software of the Fluent.The procedure is compiled by the user defined equations,the parameters of the fluid are inputted and the distribution of the beam intensity is calculated.The absorbed laser energy is added to the energy equation of the fluency as the energy source.The fluency equations are solved by virtue of the Fluent software.As the straight tube with the round section,the results obtained by the theoretical methods are consistent with the outcomes achieved by the established model.

关 键 词：内通道 热晕效应 仿真平台 Fluent软件 

分 类 号：TN012[电子电信—物理电子学]