Solid-liquid Of Two-phase Debris Flow Movement Of Computational Mechanics

Debris flow are a kind of global natural disasters, for our country 's highway traffic, lossed nearly 50 billion yuan each year because of the debris flow. we must deepen recognizing and understanding of the debris flow outbreak, sports and disaster reasons of the role of the mechanism. In recent years, researchers and technical personnel from their own fields and the objects to study and combat Debris flow, but the Research Methods is based on research or theoretical analysis, But it can not interpret some of the Debris flow Phenomenon more reasonable and accurate by the theory and formulas anf empirical, The traditional method has not been meet the increasing development of the debris flow dynamics studies.In recent years, the rapid development of computer level, Numerical simulation gradually joinning with the study also Debris, So this paper from researching the Debris flow characteristic parameters of the sports, and focusing on researching the Debris flow with computational mechanics, we have been the innovative results are as follows:(1)analyzing the viscosity as one of the characteristic parameters of the Debris-flow liquid,establishing the calculation method of the debris flow viscosity, checking error with 4~6% through the information;(2)analying the problem of the turbulence of the debris flow, based on the fluid characteristics of Debris flow, Debris flow can divided into dilute Debris flow and viscous Debris flow, and through reasonable assumptions, this paper study the turbulent flow problem within Two theoretical by computational fluid dynamics theory, theory of two-phase flow hydrodynamics and fluidmass theory.last successful establishment of the dilute debris flow two-equation turbulence model equations and the turbulent fluidmass of viscous debris flow model, and confirmed its effectiveness by the numerical data checking;(3)Introducing the finite difference method into the debris flow Numerical calculation, Establishment the swirl discrete differential equations against the eddy current problems of the debris flow liquid and solved by integrating;(4)Analying the changes of the Debris flow movement in the Ditch Debris flow can divid into unsteady flows and the unsteady flow, Using the limited volume and discreting the differential equations of two-Flow Pattern in the one-dimensional and two-dimensional space;(5) Through the k-εturbulence equations, Reynolds equation, Keerma profile Rove - Pulangte relationship and two-dimensional sediment turbulence model and the basic characteristics of Debris flow, built the mode three-dimensional turbulence model, and applied to Xinjiang Tianshan K630 debris flow of the study of the forecast rate of change in the flow field, the calculated results and K630 valley debris flow model test data basic anastomosis。The aforementioned study enriched scientific connotation of the two-phase Debris flow Calculation mechanics theory, it can be applied in numerical analysis and simulation landslides, also can provides a new method for Debris flow research method and can become an important supplement for the traditional method.