摘要
用分解算子法和延续算法对二维Ｒａｙｌｅｉｇｈ－Ｂｅｎａｒｄ对流问题的稳定性进行了数值追踪研究．画出了 Ｐｒ＝ １０时不同 Ｒａ所对应的流线，等涡线和等温线图；并求出了对于不同Ｐｒ数所对应的临界Ｒａ数，其值大约为２７４０，计算结果与物理分析相一致，与三维实验结果比较也合理．
The stability of the Rayleigh-Benard thermally driven flow is numerically computed with an operator transformation and the continuation method. The contours of stream function, vorticity and temperature are drawn for different values of Ra when Pr = 1.0; and the critical Ra number at several Pr numbers is about 2740. The result agrees with the physics analysis, and is also reasonable as compared with three-dimensional experiment.
出处
《力学与实践》
CSCD
北大核心
2000年第2期23-26,共4页
Mechanics in Engineering
基金
国家自然科学基金!(19990510)
关键词
分解算子法
二维R-B对流问题
稳定性
operator decomposition method, continuation method, Rayleigh-Benard thermally driven flow, critical Ra number
