Numerical Study of Double Jet Impact Atomization Using Meshless MPS Method
In order to study the influence of mass flow rate as well as impact angle on the atom-ization field of double jet impingement,the moving particle semi-implicit(MPS)method is applied to simulate the liquid atomization process of double jets impingement,according to the results of numerical simulation,a staining method is proposed to study the spatial dispersion of droplets,and the post-processing analysis of the atomization field is carried out.Firstly,the correctness of the fully developed velocity inlet model and the surface tension model are verified by the simulation of Poiseuille flow and square droplet rounding;Then,by analyzing the influence of the mass flow rate and impact angle on the atomization characteristic parameters,the whole process of the formation of liquid film and fragmentation into liquid filaments,and the further formation of liquid filaments into droplets under typical conditions are obtained.Finally,it is concluded that when the mass flow rate increases from 5 g/s to 25 g/s,the average droplet size decreases by 80.00％,and the atomization angle increases by 42.13％;When the collision angle increases from 30° to 90°,the average droplet size decreases by 94.22％,and the atomization angle increases by 59.95％;When the mass flow rate is 20 g/s and the impact angle is 75°,the atomization field can reach the relatively optimal state.
moving particle semi-implicit methoddouble jetsatomization process
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