Numerical Analysis of General Trends in Single-Phase Natural Circulation in a 2D-Annular Loop

Figure 3

Temperature and stream function fields in a convective regime; Ra=1000, 𝑅=2.0, and 𝑃𝑟=5.

(a) Counter-clockwise motion; isotherms, from 0.1 (blue) to 1.1 (red) in steps of 0.1

(b) Clockwise motion; stream function field, from 1 to 11 in steps of 1