Open AccessDetermination of the mean velocity of mudflows (debris flows) taking into account their life cycle
Author(s) -
Ludmila Volgina,
Stanislav Sergeev
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1030/1/012150
Subject(s) - mudflow , range (aeronautics) , geology , mechanics , debris , physics , meteorology , engineering , aerospace engineering
The paper is about calculation of the mean velocity of the mudflows. A mudflow is unsteady, non-uniform two-phase flows with high concentration of solid particles. Basic characteristics (depth, width, particle mean concentration and diameter) of a mudflow change in wide range (in time and in space), thus should be considered as a dynamic system. Existing empirical formulas for the mean velocity not for its. However, the principle of calculating the mean velocity must change for each phase of the lifecycle. Comparison of the calculated formulas and search for the closest ones to the measured also discussed. We give recommendations for calculating mean velocity of mudflows at any time during its moving.