Linear and angular momentum conservation in hydraulic jump

摘要: The present paper deals with the integral conservation of linear momentum and angular in stationary hydraulic jump a wide rectangular channel. flow is considered to be divided into mainstream, that conveys total liquid discharge, roller, which no average mass transport occurs. Referring infinitely large case, purely two dimensional motion considered. interface between regions streamline, corresponding stream function value equal discharge per unit width. approach consists satisfying mechanical balances mass, momentum, while (large scale) constitutive relation assumed for turbulent liquid. Regarding stress tensor, hydrostatic normal pressure distribution assumed, nothing regarding shear stresses, except viscous stresses are negligible respect stresses. A paradox put evidence, classical hydra...