摘要
对特征无反射边界条件(characteristic non-reflecting boundary conditions)中面特征无反射边界条件处理方法进行了细致的研究,提出了新的数学处理方法,并通过大量的数值模拟研究表明,这种方法在处理边界上声波扰动引起的数值稳定性方面具有明显的优势.进行了可压缩圆孔射流直接数值模拟研究,数值模拟的结果与实验结果吻合比较好,表明本文提出的面特征边界数学处理方法是相对准确的.
A new mathematical treatment of face boundary conditions is developed based on the theory of characteristic non-reflecting boundary conditions in this research. Several numerical tests are conducted, and it is found that this mathematical treatment is beneficial to the treatment of waves. A spatially evolving round jet is simulated by the direct numerical simulation method, and the numerical simulation results agree well with the experimental data, which verifies the feasibility of the new method proposed in this paper for treating face boundary conditions.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2012年第5期427-434,共8页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50736006)
关键词
特征无反射边界条件
直接数值模拟
圆孔射流
面边界条件
characteristic non-reflecting boundary conditions
direct numerical simulation
round jet
face boundary conditions
