Entropy generation of double-diffusive convection in the presence of rotation

摘要

In the present study, the entropy generation of double-diffusive convection in the presence of rotation is investigated for the first time. In order to reveal the effects of rotating of the enclosure (described by the ratio of buoyancy frequency to Coriolis frequency St) and the ratio of buoyancy forces Rp on entropy generation systematically, we divide the cases investigated in the present study into two groups: (1) Rp is fixed but St varies from 0.001 to 10; (2) St is fixed but Rp varies from 0.1 to 2. We find that only fast rotation has significant influence on entropy generation distribution. Moreover, the share of irreversibility due to concentration diffusion increases quickly with Rp and it becomes the main contributor to entropy generation since Rp>0.6.