摘要
此文采用FLUENT软件下的数值模拟与模型实验相结合的方法,对截球型雷达天线罩在均匀定常来流下的风载荷情况进行了研究。在数值计算中,比较了三维不可压缩湍流的标准k、RNG k和Reynolds应力三种模型,结果表明标准k模型比较适合本问题的工程应用。使用标准k模型对不同高径比的天线罩进行数值模拟后发现,高径比的改变会显著改变其升、阻力特性,是影响天线罩整体风载荷的重要因素。
The wind load of truncated sphere radome has been studied in the condition of uniform time-independent flow by the methods of both numerical simulation from the software FLUENT and a wind tunnel experiment of radome model.The numerical results using three different kinds of 3-D incompressible turbulence model,which are Standard Model,RNG Model and Reynolds Stress Equation Model,are compared with the experiment result.It is shown that the Standard Model is a much more suitable one to be applied to the industrial problem.When applying the Standard model to the numerical simulation,we found that the lift and drag characteristics of a radome may be changed dramatically with its height-to-diameter ratio which could be a key factor affecting wind load of a radome.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2012年第5期605-614,共10页
Chinese Journal of Hydrodynamics
基金
国家科技部科技创新基金(1101H117700)
上海市科委科技创新基金(pkc2011-004)~~
关键词
截球型天线罩
风载荷
模型实验
k模型
高径比
Truncated sphere radome
Wind load
Model test
Model
Height-to-diameter ratio
