Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Comparison of GDI Spray Prediction by Hybrid Models

혼합모델에 의한 GDI 분무예측의 비교

  • Published : 2003.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to obtain the information about the development process of GDI spray. To acquire the characteristics of GDI spray, the computational study of hollow cone spray for high-pressure swirl injectors was performed. Several hybrid models using the modified KIVA code have been introduced and compared. WB model and LISA model were used for the primary breakup, and DDB and APTAB models were used for secondary breakup. To compare with the calculated results, the experimental results such as cross-sectional images and SMD distribution were acquired by laser Mie scattering technique and Phase Doppler Analyzer respectively. The results show that LISA+APTAB hybrid model has the best prediction for spray formation process.

Keywords

References

  1. Zhao, F., Yoo J., Liu, Y., and Lai M., 1996, 'Spray Dynamics of High Pressure Fuel Injector for DI Gasoline Engines,' SAE Paper, No.961925
  2. Beatrice, C., Belardini, P., Bertoli, C., Cameretti, M. C., and Cirillo, N. C., 1995, 'Fuel Jet Models for Multidimensional Diesel Combustion Calculation: An Update, SAE Paper, No.950086
  3. Kim, J. I., and No, S. Y., 2001, 'Development of Hybrid Model for Simulation of Diesel Spray Dynamics,' J. KSAE, Vol. 9, No. 1, pp. 8-19
  4. Kwak. S. M., Ryu. K. H., Choi. D. S., Kim. D. J., 2001, 'Average Droplet Size Distribution of a GDI Spray by Simultaneous Fluorescence/Scattering Image Technique,' KSME(B), Vol. 25, No. 6, pp. 868-875
  5. Amsden, A. A., Butler, T. D., O'Rourke, P. J., 1989, 'KIVA-Ⅱ: A Computer Program for Chemically Reactive Flows with Sprays,' Los Alamos National Laboratory report, LA-11560-MS
  6. Reitz, R. D., 1987, 'Modeling Atomization Processes in High-Pressure Vaporizing sprays,' Atomization and Spray Technology, Vol. 3, pp. 309-337
  7. Schmidt, D. P., Martin, J. K., and Reitz, R. D., 1999, 'Pressure-Swirl Atomization in the Near Field,' SAE Paper, No. 1999-01-0496
  8. Ibrahim, E. A., Yang, H. Q., and Przekwas, A. J., 1993, 'Modeling of Spray Droplets Deformation and Breakup,' AIAA J. Propulsion and Power, Vol. 9, No. 4, pp. 652-654
  9. Park, J. H., Hwang, S. S., and Yoon, Y. B., 2000, 'Aerodynamically Progressed Taylor Analogy Breakup(APTAB) Model for Accurate Prediction of Spray Droplet Deformation and Breakup,' ILASS-Korea, Vol. 5, No. 2, pp.53-60
  10. Beal, J. C., Reitz, R. D., 1990, 'Modeling Spray Atomization with the Kelvin-Helmholtz/Rayleigh-Taylor Hybrid Model,' Atomization and Sprays, Vol. 9, pp. 623-650