Combustion characteristics of butanol isomers in multiphase droplet configurations

被引:24
|
作者
Liu, Yu Cheng [1 ]
Alam, Fahd E. [2 ]
Xu, Yuhao [3 ]
Dryer, Frederick L. [4 ]
Avedisian, Thomas [3 ]
Farouk, Tanvir I. [2 ]
机构
[1] Univ Michigan, Dept Comp Sci Engn & Phys, Flint, MI 48502 USA
[2] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA
[3] Cornell Univ, Sibley Sch Mech & Aerosp Engn, Ithaca, NY 14853 USA
[4] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA
基金
美国国家航空航天局;
关键词
Droplet combustion; Butanol isomers; Biofuel; Numerical simulation; Microgravity; COMPRESSION IGNITION ENGINE; N-BUTANOL; MICROGRAVITY EXPERIMENTS; EMISSION CHARACTERISTICS; BURNING CHARACTERISTICS; FLAME PROPAGATION; METHYL BUTANOATE; BUTYL ALCOHOLS; DIESEL-ENGINE; FUEL DROPLETS;
D O I
10.1016/j.combustflame.2016.04.018
中图分类号
O414.1 [热力学];
学科分类号
摘要
This study reports results of experiments on the isolated droplet burning characteristics of butanol isomers (n-, iso-, sec-, and tert-) under standard atmosphere conditions in an environment that promotes spherical combustion. The data are compared with predictions from a detailed numerical model (DNM) that incorporates complex combustion chemistry, radiative heat transfer, temperature dependent variable fluid properties, and unsteady gas and liquid transport. Computational predictions are generated using the high temperature kinetic models of Sarathy et al. (2012) and Merchant et al. (2013). The experiments were performed in a free-fall facility to reduce the effects of buoyancy and produce spherical droplet flames. Motion of single droplets with diameters ranged from 0.52 mm to 0.56 mm was eliminated by tethering them to two small-diameter SiC filaments (similar to 14 mu m diameter). In all the experiments, minimal sooting was observed, offering the opportunity for direct comparison of the experimental measurements with DNM predictions that neglect soot kinetics. The experimental data showed that the burning rates of iso- and sec-butanol are very close to that of n-butanol, differing only in flame structure. The flame stand-off ratios (FSR) for n-butanol flames are smaller than those for the isomers, while tert-butanol flames exhibited the largest FSR. DNM predictions based upon the kinetic model of Sarathy et al. over-predict the droplet burning rates and FSRs of all the isomers except n-butanol. Predictions using a kinetic model based upon the work of Merchant et al. agree much better with the experimental data, though relatively higher discrepancies are evident for tert-butanol simulation results. Further analyses of the predictions using the two kinetic models and their differences are discussed. It is found that the disparity in transport coefficients for isomer specific species for Sarathy et al. model fosters deviation in computational predictions against these newly acquired droplet combustion data presented in this study. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码:216 / 228
页数:13
相关论文
共 50 条
  • [1] A comparative study of combustion and emission characteristics of butanol isomers on a diesel engine with dual fuel butanol isomers/diesel compound combustion
    Xia, Qi
    Wang, Kui
    Han, Zhiqiang
    Tian, Wei
    FUEL, 2019, 254
  • [2] Experimental study on combustion characteristics of an n-butanol-biodiesel droplet
    Zhang, Yu
    Huang, Ronghua
    Huang, Yuhan
    Huang, Sheng
    Zhou, Pei
    Chen, Xi
    Qin, Tian
    ENERGY, 2018, 160 : 490 - 499
  • [3] Combustion characteristics of a 1-butanol gel fuel droplet in elevated pressure conditions
    Nam, Siwook
    Kim, Hyemin
    FUEL, 2022, 332
  • [4] An experimental and kinetic modeling study of combustion of isomers of butanol
    Grana, Roberto
    Frassoldati, Alessio
    Faravelli, Tiziano
    Niemann, Ulrich
    Ranzi, Eliseo
    Seiser, Reinhard
    Cattolica, Robert
    Seshadri, Kalyanasundaram
    COMBUSTION AND FLAME, 2010, 157 (11) : 2137 - 2154
  • [5] Impact of butanol isomers and EGR on the combustion characteristics and emissions of a SIDI engine at various injection timings
    Li, Lei
    Wang, Tianyou
    Duan, Jianyu
    Sun, Kai
    APPLIED THERMAL ENGINEERING, 2019, 151 : 417 - 430
  • [6] A comprehensive chemical kinetic combustion model for the four butanol isomers
    Sarathy, S. Mani
    Vranckx, Stijn
    Yasunaga, Kenji
    Mehl, Marco
    Osswald, Patrick
    Metcalfe, Wayne K.
    Westbrook, Charles K.
    Pitz, William J.
    Kohse-Hoeinghaus, Katharina
    Fernandes, Ravi X.
    Curran, Henry J.
    COMBUSTION AND FLAME, 2012, 159 (06) : 2028 - 2055
  • [7] The effect of butanol isomers on diesel engine performance, emission and combustion characteristics under different load conditions
    Pan, Mingzhang
    Tong, Chengzheng
    Qian, Weiwei
    Lu, Fulu
    Yin, Jiwen
    Huang, Haozhong
    FUEL, 2020, 277
  • [8] Investigation on the autoignition characteristics of propanol and butanol isomers under diluted lean conditions for stratified low temperature combustion
    He, Xiaoyu
    Wang, Qi
    Fernandes, Ravi
    Shu, Bo
    COMBUSTION AND FLAME, 2022, 237
  • [9] n-Butanol droplet combustion: Numerical modeling and reduced gravity experiments
    Alam, Fahd E.
    Liu, Y. C.
    Avedisian, C. T.
    Dryer, F. L.
    Farouk, T. I.
    PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2015, 35 : 1693 - 1700
  • [10] Experimental study on puffing characteristics of biodiesel-butanol droplet
    Zhang, Yu
    Huang, Ronghua
    Wang, Zhaowen
    Xu, Shijie
    Huang, Sheng
    Ma, Yinjie
    FUEL, 2017, 191 : 454 - 462