CRITERION OF TRANSITION TO TRANSITIONAL CORRELATION OF NATURAL CONVECTION HEAT TRANSFER FROM HORIZONTAL CYLINDER IN AIR

摘要

In this paper, extensions of experimental Rayleigh number for air up to 6. OX 108 have been realized. It provides a reliable date base for establishing the criterion of transition. The criterion of transition obtained in terms of Grashof number is Gr_(er) = 5. 76 × 10~8. Both air and water data support this criterion.