Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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CFD Simulation of SMD Distribution of Diesel Sprays Injected from a Common Rail Injector According to Compression Ratio of Combustion Chamber

커먼레일 인젝터로부터 분사되는 디젤 분무의 연소실 압축비 변화에 따른 SMD 분포의 CFD 시뮬레이션

  • 이충훈 (서울과학기술대학교 기계.자동차공학과)
  • Received : 2014.07.23
  • Accepted : 2014.02.10
  • Published : 2014.09.30
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Abstract

A diesel spray overall SMD (Sauter mean diameter) in a spray chamber was simulated with CFD by varying the compression ratio in the spray chamber from 18:1 to 100:1. The gas densities of the spray chambers for the compression ratios of 18:1 and 100:1 were 17.97 and $74.8kg/m^3$, respectively. Standard KIVA-3V code was used for the CFD simulation. Various fuel injection patterns such as single injection, pilot injection and split injection were used for the CFD simulation. Fuel injection pressures for the simulated diesel sprays are 90 and 120 MPa. As the compression ratio increases, the CFD simulated SMD was decreased, which was generally in agreement with previous experimental studies.

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References

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