光学学报, 2012, 32 (7): 0701001, 网络出版: 2012-05-18
计算流体成像技术重构方法及其应用
Reconstruction Methods and Application of Computational Fluid Imaging Technology
大气光学 计算流体成像 湍流模拟 三维流动 复杂几何边界 atmospheric optics computational fluid imaging turbulence simulation three-dimensional flow complex geometric boundary
摘要
建立系统的计算流体成像(CFI)技术,并论证其为流动数值模拟与风洞实验相互佐证的重要手段。采用纯数值模拟技术重构得到流场计算阴影、纹影以及干涉图,主要技术包括复杂湍流模拟技术、三线性插值技术和流动图像重构技术等。同时将CFI技术应用于激波管内绕障碍物三维复杂流动计算图像重构,并与双向全息实验结果进行了比较分析。研究证明该CFI技术可以用于复杂几何边界、分区域、非定常流动图像重构,不仅能够为流场结构特征分析提供重要参考依据,而且能够用于数值模拟与风洞实验结果的比较印证。
Abstract
Computational fluid imaging (CFI) technology is an excellent tool for comparing numerical simulations with wind tunnel experiments of flow. Key methods including reconstruct computational fluid shadowgragh, schlieren and interferogram with numerical simulation technologies. Complex turbulence simulation, trilinear interpolation and flow image reconstruction etc. are developed. CFI technology is used for computational images reconstruction of the three-dimensional complex flow around an obstacle in the shock tube, and results are compared with those from bidirectional holographic experiments. It is shown that CFI can be used in reconstructing patterns of flows with complex geometric boundaries, the zonal area and unsteady characteristics etc., and it may be adopted not only for analyzing flowfield structures, but also for comparing numerical simulations with wind tunnel experimental results.
陈勇, 郭隆德, 岳茂雄, 陈志强. 计算流体成像技术重构方法及其应用[J]. 光学学报, 2012, 32(7): 0701001. Chen Yong, Guo Longde, Yue Maoxiong, Chen Zhiqiang. Reconstruction Methods and Application of Computational Fluid Imaging Technology[J]. Acta Optica Sinica, 2012, 32(7): 0701001.