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2D-Numerical Simulation For Aerated Jet

Posted on:2018-04-08Degree:MasterType:Thesis
Country:ChinaCandidate:X F QuFull Text:PDF
GTID:2322330518460849Subject:Water Resources and Hydropower Engineering
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In this paper,the numerical simulation of a two-dimensional aerated jet is done in many aspects,which are summarized as the following three parts:The first part of the paper summarizes eddy simulation of the aerated jet.From the location,velocity and direction data obtained from Large eddy simulation numerical model and with the comparative analysis of prototype observation data,an intuitive motion state and the motion characteristics of the aeration jet are found?The second part summarizes the SPH mathematical model of the aerated jet.In this paper,the air resistance is need to be set up in accordance with the expression of SPH model equations.According to the assumption of free surface,a function for calculating air resistance is set up.Considering the jet's diffusion and aeration condition,jet's movement differential equation is established.And this established differential equation helps to put forward the SPH numerical solution for solving the aerated jet's moving parameters.The third part is the mathematical model for the aerated jet's SPH case study.According to the two phase flow movement equation,the aerated jet's two-dimension SPH numerical model is established.This model helps to put forward the SPH numerical solution of the two-dimension aerated jet,depict the interaction between jet and air,simulates the aeration of jet,and helps to find the relationship between the thickness of the aerated jet and the change of the curvilinear coordinates.The simulation results are found to be similar with the original observation results.Hence,the validity and reliability of SPH model is verified.
Keywords/Search Tags:large eddy simulation, SPH, jet, numerical solution, aeration
PDF Full Text Request
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