[en] The numerical solution of the Navier-Stokes equation and experimental data of visual investigations of propagation and interaction of unequally heated jets in a cold liquid in a limited volume are qualitatively compared in the study. It has been assumed in the experiments and calculations that Re=74, Pe=400, Fr=10^-3, 10^-4. The calculational area amounts to 30x42, counting times are of the order of an hour for the BESM-6 computer. Temperature fields and flow functions are close to the liquid flow structure profiles obtained by the shadow method. This coincidence indicates a principle possibility of numerical simulation of studied flows