Combined forced and free convection channel flows in magnetohydrodynamics

Abstract

characteristic turbulence scale L If the scale I > (CDA)', then the energy builds up in a few scale lengths and then decays rather rapidly. If, however, I 1 is, in every case, proportional to £~. These results are not inconsistent with the currently accepted ideas about turbulent energy decay. The persistence of the large eddies is rather clearly brought out; whereas, at the same time, the small eddies show a tendency to hold on to their energy, as predicted by the Kolmogoroff hypothesis. The implications of the results for the calculation of the radar cross section of turbulent plasmas is the following: if we accept the hypothesis that