中文摘要：

通过建立Rayleigh-Bénard对流模型,数值模拟得到具有不同涡数的Bénard花胞的稳定流场,并以不同Ra下的2涡Bénard稳定流动为对象来研究系统的熵产特征。研究发现：在可以形成稳定Bénard流动的Ra范围内,采用线性理论和经典热力学理论分别计算出的系统熵产基本上一致;并且,在稳定的Bénard流场中,系统的熵产随着Ra的增加而增加。

英文摘要：

Rayleigh-Bénard convection model was established,and a great number of Bénard cells with different vortex number were obtained by numerical simulation.Stable Bénard cell of two vortexes was taken as the object to study the entropy production characteristics of the system in different Ra.It was found that：1.In the range of Ra that could generate stable Bénard flow,system entropy production calculated by using linear theory and classic thermodynamics theory,respectively,were basically identical.2.In stable Bénard flow field,the system entropy production increase with Ra increase.Enriches the understanding of Bénard convection phenomenon,and lays the foundation for the further research of dissipative structure.