tailieunhanh - Hydrodynamics Natural Water Bodies Part 12

Tham khảo tài liệu 'hydrodynamics natural water bodies part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 262 Hydrodynamics - Natural Water Bodies Straub . Anderson . 1958 . Experiments on self-aerated flow in open channels. Journal of Hydraulic Division ASCE Proc. pp. 1890-1-1890-35. Tozzi . 1992 . Caracterizacao comportamento de escoamentos em vertedouros com paramento em degraus Characterization of flow behavior in stepped spillways . Dr Thesis. University of São Paulo São Paulo Brazil in Portuguese . 302 pp. Dr Thesis - Universidade de São Paulo São Paulo. Wilhelms . Gulliver . 2005 . Bubbles and waves description of self-aerated spillway flow. Journal of Hydraulic Research Vol. 43 pp. 522-531. 2005 Wood . Ackers P. Loveless J. 1983 . General method for critical point on spillways. Journal of Hydraulic Engineering Vol. 109 No. 27 pp. 308-312 1985. Wood . 1984 . Air entrainment in righ speed flows. Symposium on scale Effects in modelling hydraulic structures IAHR Kobus H. Ed. paper Sep. 13 Sediment Gravity Flows Study Based on Experimental Simulations Rafael Manica Institute de Pesquisas Hidráulicas - Universidade Federal do Rio Grande do Sul Brazil 1. Introduction Gravity or density currents currents are a general class of flows also known as stratified flows in which flow takes place because of relatively small differences in density between two flows Middleton 1993 . Gravity currents that are driven by gravity acting on dispersed sediment in the flow were called sediment gravity flows Middleton Hampton 1973 . Sediment gravity flows may occur in both subaerial . avalanches pyroclastic flows and so on and subaqueous ambients . bottom currents turbidity currents debris flow - see Simpson 1997 and may flow above below or inside the ambient fluid. The distinction regarding sediment gravity flows and open-channel flows is due to the order of magnitude of the density difference between the fluids. Sediment gravity flow are generally of the same order of magnitude whilst open-channel flow the difference in density between .