This work deals with a one-dimensional analysis of a rotating open loo
p subjected to a uniform heat flux per unit length. Fluid temperature
is fixed at the inlet of the loop. Flow is driven by buoyancy as well
as by a pressure gradient. The criterion for onset of motion is first
determined. Steady-state motion is then analyzed and is found to exhib
it both a positive and a negative branch. Linear stability analysis is
performed to determine regions in parameter space over which the flow
is unstable. Parameters varied for this analysis are those correspond
ing to rotational velocity, heat flux, and a modified pressure differe
nce across the loop. One or both velocities may be stable. It is also
possible to have an oscillatory state coexist with a time-independent
solution. A perturbation method is used to evaluate the effect of grav
ity on flow characteristics.