Natural convection has an undeniable effect on the thermal-flow processes in engineering practice. The tanks used in most mobile engineering systems are approximately of parallelepiped shape. Such tanks may contain all kinds of hydraulic fluids, so that the research done has chosen water and air that represent the majority of fluids that can be found in the given tanks. The paper will show the influence of external effects, most of all, of temperature changes upon thermal-flow processes taking place in the given tanks. The obtained results should more closely show the real flow regimes taking place in the given tanks as well as their influence upon the deposition of solid particles that can be found in the given tanks.

Natural convection has an undeniable effect on the thermal-flow processes in engineering practice. The tanks used in most mobile engineering systems are approximately of parallelepiped shape. Such tanks may contain all kinds of hydraulic fluids, so that the research done has chosen water and air tha...