Simulation of hollow jet flow field for spray forming
Abstract：In order to improve the atomization quality of spray forming,the cylindrical hollow jet technology was applied in the atomization process of spray forming,and a numerical simulation for the structure of hollow flow field in front of jet outlet was carried out,the distribution of hollow jet flow field was simulated under different inlet velocities and outflow technologies,and then the experimental verification was performed.The simulation results of single-phase flow field show that with increasing the liquid inlet velocity,the backflow area can get enlarged,and the lower negative pressure can be generated,which is beneficial for the outflow of liquid metal.The simulation results of two-phase flow field show that the better hollow jet can be produced with interconnecting middle hollow core and atmosphere.When the hollow core is ventilated with air flow of 0.02MPa,the hollow part of jet increases.And the conclusion basically accords with the experimental result of water flow.
Keywords：spray forminghollow jetatomization technologynumerical simulationmathematical modelgeometric modelvelocity distributionpressure distribution
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)