Effects of Model Parameters on Spray Characteristics of Gasoline Direct-Injection Engines
This paper investigates the effects of turbulence model parameter,one-way coupling model parameter,and break-up model parameters on spray penetration and droplet size based on the VOF-spray one-way coupling model.The results indicate that the RANS constant Cε1 and the RT model size constant CRT have the greatest effect on the spray penetration,and size constants CKH and CRT have the greatest effect on the droplet size.Based on the above analysis,it establishes a high precision spray model for different working conditions.The error between experiment and simulation is within 3%for standard Spray G condition,and around 10%error for different ambient gas densities.
万方数据
维普
