A numerical study of submerged hydraulic jumps

Autor:	Nallamuthu Rajaratnam, Dejiang Long, Peter M. Steffler
Rok vydání:	1991
Předmět:	Turbulence K-omega turbulence model Mechanics Supercritical flow Control volume symbols.namesake Free surface Froude number symbols Geotechnical engineering Mean flow Hydraulic jump Geology Water Science and Technology Civil and Structural Engineering
Zdroj:	Journal of Hydraulic Research. 29:293-308
ISSN:	1814-2079 0022-1686
DOI:	10.1080/00221689109498435
Popis:	A standard two-dimensional k-e turbulence model is used to predict the mean flow and turbulence characteristics of submerged hydraulic jumps. An offset control volume method is developed to facilitate computation of the variable free surface. The numerical predictions are compared with experimental measurements under three conditions with supercritical Froude numbers ranging from 3.2 to 8.2 and submergence factors ranging from 0.24 to 0.85. Finally the numerical performance is evaluated and discussed in detail. It is concluded that the model is adequate for predicting the surface profile, mean velocity field and to some extent, the turbulence structure of submerged hydraulic jumps.
Databáze:	OpenAIRE
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