摘要
针对传统体积力模型应用于跨声速压气机精度不够的问题,发展了带能量源项的三维体积力模型。在从单通道RANS定常结果提取体积力源项时,考虑控制体能量方程,提取出能量源项,连同力源项一起加入到CFX软件中进行求解。将仿真结果与实验数据对比,从而修正源项的值和分布,并循环计算。最终结果表明:体积力模型成功模拟了NASA Rotor37在设计转速下的气动性能,其网格数相比全通道RANS减少约1.5个数量级;模型结果与实验取得良好一致,平均相对误差为0.62%。
A three-dimensional body-force model with energy source item was developed to solve the problem of low accuracy with traditional body-force model applied to transonic compressor. The energy equation was considered when the body-force source item was extracted from single-passage RANS simulation results, in which the energy source item was extracted and added to CFX together with the force one. Comparing the simulation results with experiment data, the value and distribution of the source item was revised for cycle computing. The final results shows that body-force model simulates aerodynamic performance of NASA Rotor37 at design operating point successfully while it reduces about one point five magnitudes of mesh numbers in contrast to full-passage RANS model.The results by the model are in agreement with experiments and the average relative error is 0.62 percent.
作者
谢豪
李军
周游天
宋国兴
XIE Hao;LI Jun;ZHOU You-Tian;SONG Guo-Xing(Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi'an 710038, China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2019年第6期1262-1267,共6页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.51336011)
关键词
体积力模型
能量方程
CFX
源项
body-force model
energy equation
CFX
source item
