Kuzmenko I.M.

Experimental Study of Characteristics of Moving Water Film within Netting

The effects of netting characteristics, sprinkler construction and irrigation density on the moving water film in the net surface is experimentally studied. Netting surface irrigated by water was supplied through some type of sprinkler without the air flow. The film thickness in the netting is determined empirically using the amount of delayed water. The delayed water was collected by clipping. The percent error of the experiment is up to 6 %. Increasing the irrigation density correspond qualitatively to the thickness of water film according to Nusselt’s formula.

Modeling of Film Hydrodynamics in the Grid Structure

Our objective is to determine the speed and thickness of the film as principal parameters that present the efficiency of heat mass transfer. To that end, we apply an analytical model of flow infinite cylinder by the perpendicular flow of inviscid fluid. The model is supplemented with the calculation of local liquid film thickness. The experimental results show that the waves appear on the grid surface with the film. It causes the increase of the flow velocity and reduction of the film thickness.