Development of a Virtual CFR Engine Model for Knocking Combustion Analysis

被引:49
|
作者
Pal, Pinaki [1 ]
Kolodziej, Christopher [1 ]
Choi, Seungmok [1 ]
Som, Sibendu [1 ]
Broatch, Alberto [2 ]
Gomez-Soriano, Josep [2 ]
Wu, Yunchao [3 ]
Lu, Tianfeng [3 ]
See, Yee Chee [4 ]
机构
[1] Argonne Natl Lab, Argonne, IL 60439 USA
[2] Univ Politecn Valencia, Valencia, Spain
[3] Univ Connecticut, Storrs, CT USA
[4] Convergent Sci Inc, Madison, WI USA
关键词
Knock; CFR engine; G-equation; Multi-zone; Research octane number; Numerical modeling; Computational fluid dynamics; Simulation;
D O I
10.4271/2018-01-0187
中图分类号
U [交通运输];
学科分类号
08 ; 0823 ;
摘要
Knock is a major bottleneck to achieving higher thermal efficiency in spark ignition (SI) engines. The overall tendency to knock is highly dependent on fuel anti-knock quality as well as engine operating conditions. it is, therefore, critical to gain a better understanding of fuel-engine interactions in order to develop robust knock mitigation strategies. In the present work, a numerical model based on three-dimensional (3-D) computational fluid dynamics (CFD) was developed to capture knock in a Cooperative Fuel Research (CFR) engine. For combustion modeling, a hybrid approach incorporating the G-equation model to track turbulent flame propagation, and a homogeneous reactor mufti-zone model to predict end-gas auto-ignition ahead of the flame front and post-flame oxidation in the burned zone, was employed. In addition, a hybrid methodology was implemented wherein a laminar flame speed lookup table generated a priori from a chemical kinetic mechanism could be used to provide flame speed as an input to the G-equation model, instead of using conventional empirical correlations. Multi-cycle Reynolds-averaged Navier-Stokes (RANS) simulations were performed for two different spark timings (STs) corresponding to non-knocking and knocking conditions, with other operating conditions kept the same as those of a standard research octane number (RON) test. Isooctane was considered as the fuel for the numerical study. Two different reduced kinetic mechanisms were employed to describe end-gas auto-ignition chemistry and to generate the flame speed lookup table. Experimental data, including intake/exhaust boundary conditions, was provided by an isooctane ST sweep study conducted in an in-house CFR engine. Moreover, cylinder wall/valve/port surface temperatures and residual gas fraction (RGF) were estimated using a well-calibrated one-dimensional (1-D) model. On the other hand, a novel methodology was also developed to analyze experimental data for the knocking case and identify the most representative cycle. For the non-knocking case, a good agreement was found between experiment and CFD simulation, with respect to cycle-averaged values of 10% burn point (CA10), 50% burn point (CA50), and peak pressure magnitude/location. The virtual CFR engine model was also demonstrated to be capable of predicting average knock characteristics for the knocking case, such as knock point, knock intensity, and energy of resonance, with good accuracy.
引用
收藏
页码:1069 / 1082
页数:14
相关论文
共 50 条
  • [1] MULTI-DIMENSIONAL CFD SIMULATIONS OF KNOCKING COMBUSTION IN A CFR ENGINE
    Pal, Pinaki
    Wu, Yunchao
    Lu, Tianfeng
    Som, Sibendu
    See, Yee Chee
    Le Moine, Alexandra
    PROCEEDINGS OF THE ASME INTERNAL COMBUSTION ENGINE FALL TECHNICAL CONFERENCE, 2017, VOL 2, 2017,
  • [2] Development of a fast-virtual CFR engine model and its use on autoignition studies
    Garcia, Antonio
    Monsalve-Serrano, Javier
    Lago Sari, Rafael
    Fogue-Robles, Alvaro
    Alemahdi, Nika
    Tuner, Martin
    Pintor, Dario Lopez
    FUEL PROCESSING TECHNOLOGY, 2021, 224
  • [3] Analysis of the Combustion Process in a Hydrogen-Fueled CFR Engine
    Beccari, Stefano
    Pipitone, Emiliano
    Caltabellotta, Salvatore
    ENERGIES, 2023, 16 (05)
  • [4] LES prediction and analysis of knocking combustion in a spark ignition engine
    Robert, A.
    Richard, S.
    Colin, O.
    Martinez, L.
    De Francqueville, L.
    PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2015, 35 : 2941 - 2948
  • [5] Combustion process characteristics on a CFR gasoline engine
    Martin, M. J., V
    Araque, J. O. M.
    Villamar, C. G. L.
    CIENCIA E INGENIERIA, 2006, 27 (01): : 25 - 30
  • [6] EXHAUST EMISSION OF OTTO ENGINE IN KNOCKING COMBUSTION
    EBERANEB.R
    GRUDEN, D
    SCHWARZB.G
    ERDOL & KOHLE ERDGAS PETROCHEMIE, 1972, 25 (12): : 715 - 718
  • [7] On knocking combustion development of oxygenated gasoline fuels in a cooperative fuel research engine
    Han, Dong
    Lyu, Delin
    Sun, Zijian
    Liang, Xin
    Huang, Zhen
    INTERNATIONAL JOURNAL OF ENGINE RESEARCH, 2023, 24 (06) : 2410 - 2421
  • [8] COMBUSTION OF RESIDUAL FUELS IN A CFR DIESEL ENGINE.
    Ruzicka, D.J.
    Robben, F.
    Sawyer, R.F.
    Motor Ship, 1984, 65 (768): : 28 - 31
  • [9] Quasi-dimensional analysis of combustion, emissions and knocking in a homogeneous GDI engine
    J. Lee
    Y. Lee
    K. Y. Huh
    H. Kwon
    J. I. Park
    International Journal of Automotive Technology, 2015, 16 : 877 - 883
  • [10] Quasi-dimensional analysis of combustion, emissions and knocking in a homogeneous GDI engine
    Lee, J.
    Lee, Y.
    Huh, K. Y.
    Kwon, H.
    Park, J. I.
    INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY, 2015, 16 (05) : 877 - 883