Abstract
This paper proposed a high pressure evaporation model and numerical simulation method for a single droplet on the base of real gas equation of state (EOS). The evaporation process of n-heptane droplet in nitrogen was simulated. The influence of Redlich-Kwong (RK) EOS, Soave-Redlich-Kwong (SRK) EOS and Peng-Robinson (PR) EOS on the calculation of fuel droplet's evaporation was discussed. PR EOS shows good agreement with experimental data in vapor-liquid phase equilibrium (VLE), thermophysical properties and the variation of droplet diameter. SRK EOS is close to the results of PR EOS in VLE, critical state of binary mixture and n-heptane's enthalpies of evaporation. But SRK EOS's calculation results are smaller than that of PR EOS in thermophysical properties and evaporation lifetime of droplet. RK EOS's calculation results are obviously different to that of SRK EOS and PR EOS. The highest accuracy of high pressure evaporation model for a single droplet is the PR EOS, flowing by SRK EOS and RK EOS.
| Original language | English |
|---|---|
| Pages (from-to) | 344-351 |
| Number of pages | 8 |
| Journal | Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) |
| Volume | 27 |
| Issue number | 4 |
| State | Published - Jul 2009 |
Keywords
- Equation of state
- Evaporation
- Fuel droplet
- High temperature and high pressure
- Numerical simulation
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