Construction of a decoupling physical–chemical surrogate (DPCS) for practical diesel fuel

Yanzhi Zhang (1, 2) , Ming Jia (2) , Pengfei Wang (2) , Yachao Chang (2) , Ping Yi (3) , Hong Liu (2) , Zhixia He (1)

1 JiangSu University
2 Dalian University of Technology
3 IFPEN - IFP Energies nouvelles

A decoupling physical–chemical surrogate (DPCS) model was constructed for simulating the multi-component physical and chemical characteristics of practical diesel fuel. In the DPCS model, the physical and chemical characteristics of diesel fuel are surrogated separately, and the physical and chemical surrogates are coupled according to the principles of C/H mass ratio, functional group structure, and carbon balance. By implementing the DPCS model into a Computational Fluid Dynamics (CFD) code, the effect of the multi-component physical and chemical characteristics of diesel fuel on the spray, combustion, and emission characteristics in a constant-volume chamber and an optical diesel engine were explored. The results indicate that the DPCS model can satisfactorily reproduce the diesel vaporization and combustion behaviors under wide operating conditions.

Keywords: Multi-component fuel; Diesel surrogate; Physical and chemical properties; Computational fluid dynamics (CFD)

Domains: Engineering Sciences [physics]; Mechanics [physics.med-ph]; Chemical Sciences

Yanzhi Zhang, Ming Jia, Pengfei Wang, Yachao Chang, Ping Yi, et al.. Construction of a decoupling physical–chemical surrogate (DPCS) for practical diesel fuel. Applied Thermal Engineering, 2019, 149, pp.536-547. ⟨10.1016/j.applthermaleng.2018.12.053⟩. ⟨hal-02402633⟩