Vízügyi Közlemények, 1970 (52. évfolyam)

4. füzet - Rövidebb közlemények és beszámolók

(. de dp . dRy\ ... A

c = — A— (3) V dy dy dy ) \ dy dy ) (4) where 7c ^ constant. Writing Eq. (1) for the x and y directions, expressing with reference to an arbitrary datum plane the condition of sediment equilibrium in the form w с + Я — = 0 (5) dy and after the approximating determination of the magnitudes of R

y and A

s terms, V. G. Sanoyan applies the logical assumption of M. A. Welikhanov, according to which in geometrically similar flows and in the case of identical roughness and concentration conditions the ratio of suspension work to the total energy of flow is a constant value. Ratio numbers were estimated and checked against experimental data for concentrations lower than 25% by weight. In this manner it was concluded that as a final result for low concentrations the condition wac = const (6) Vi may be written, from which the amount of sediment entering a reservoir can be obtained. The process of settling, i. е., the distribution of sediment in time and along the length of the reservoir is obtained from the simplified condition I I ж

, 11 + = о (7) ot ox о t expressing equilibrium conditions of the sediment balance, wherein p = с h V — the sediment load; Co = the concentration of settled sediment (equals roughly 1); z — the elevation of the bottom; h = waterdepth. Entirely similar conditions can be written for the continuity of the fluid phase ô (1 — c) h d_q_ __ ô_z_ __ Q ^ ôt ô x ô t where the specific discharge is 72