Open AccessCALCULATION OF THE RAPID FLOW OF WATER AT THE OUTLET OF THE ROUND PIPE IN THE DOWNSTREAM OF THE CULVERTS
Author(s) -
Дмитрий Келехсаев,
Dmitry Kelekhsaev
Publication year - 2018
Publication title -
stroitelʹstvo i arhitektura
Language(s) - English
Resource type - Journals
eISSN - 2500-1477
pISSN - 2308-0191
DOI - 10.29039/article_5bee8ada6e3492.04272155
Subject(s) - culvert , froude number , flow (mathematics) , open channel flow , turbulence , mechanics , downstream (manufacturing) , geotechnical engineering , hydraulic structure , water flow , hydraulics , geology , flow coefficient , confluence , pipe flow , supercritical flow , engineering , physics , computer science , thermodynamics , operations management , programming language
The article proposes a mathematical modeling of the rapid flow spreading in the wide downstream of the culvert depending on the flow rate, the relative expansion of the downstream and the depth of the water at the outlet of the round pipe. An open water flow is considered in a non-pressure spreading mode. When the Froude numbers are large than four in the channel with a relative expansion of b = 3–7, pairing is established according to the type of free flow of a two-dimensional turbulent flow, the depths and flow rates at each point, the geometry of the free flow zone are determined. The flow parameters are calculated at any point of the free flow area using the Maple software package. The adequacy of the model extreme current line with the experimental one is shown.