Modeling the atomization of high-pressure fuel spray by using a new breakup model

摘要: Abstract The main objective of this research is to develop a new breakup model and investigate the influence cavitation, turbulence on processes high-pressure diesel sprays. distinguishes between jet primary atomization droplet secondary atomization. was simulated based modified induced taken into account coupling effects relaxation velocity profile, cavitation turbulent fluctuation principle conservation energy. growth time scale surface waves provided by Kelvin–Helmholtz (K–H) instability theory an infinite length cylinder for inviscid liquid jet. initial K–H plane much larger than that cylindrical Based present model, weighting coefficients overall can be distinguished clearly. There remarkable variation in spray shape with models. It could seen original results shorter penetration smaller drops near core model. When applying coefficient Ct determination angle, resultant value angle gradually due reduction Ct. However, increases increasing Ccav. Comparing experimental (such as tip shape) theoretical ones different injection pressure, gives reasonable agreement.