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Experimental Investigation on Effect of Wall Roughness and Lubricant Film on the Adhered Fuel Film of N-Butanol-Diesel Blends after Spray Impingement

Author

Listed:
  • Xingyu Liang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Hongsheng Zhang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Gequn Shu

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Yuesen Wang

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Xiuxiu Sun

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Hanzhengnan Yu

    (China Automotive Technology & Research Center, Tianjin 300300, China)

  • Ming Ge

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

Abstract

The effect of wall roughness with different lubricant film thicknesses on the characteristics of adhered fuel films of diesel-n-butanol blending fuels after spray impingement has been investigated. Four steel plates with different types of roughness (root mean square height-Sq) that were coated with different lubricant film thicknesses (h l ) were used as impinged walls. The experimental conditions included dry walls (h l = 0), semi-wetted walls (SWW) with different thin oil films (0 < h l /Sq < 1), and fully wetted walls (FWW) with a thick lubricant film (h l > Sq). The results indicate that the adhered fuel mass ratio (ε) of blended fuel with 25% n-butanol (B25) was higher than that of blended fuel with 15% n-butanol (B15) under the same conditions. ε increased with an increase in Sq on the dry walls, but, under SWW conditions, it decreased with an increase in oil film thickness. The fuel film morphology was almost unaffected by the change in Sq, but the results implied that the roughness parameter-Skewness (Ssk) exerted a greater impact. The mean thickness h a and accumulated diameter D l of the adhered fuel film increased with an increase in h l , but, under FWW conditions, the effect of the roughness on the adhered film’s features was insignificant.

Suggested Citation

  • Xingyu Liang & Hongsheng Zhang & Gequn Shu & Yuesen Wang & Xiuxiu Sun & Hanzhengnan Yu & Ming Ge, 2018. "Experimental Investigation on Effect of Wall Roughness and Lubricant Film on the Adhered Fuel Film of N-Butanol-Diesel Blends after Spray Impingement," Energies, MDPI, vol. 11(6), pages 1-14, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1576-:d:152730
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    References listed on IDEAS

    as
    1. Wang, Ziman & Guo, Hengjie & Wang, Chongming & Xu, Hongming & Li, Yanfei, 2017. "Microscopic level study on the spray impingement process and characteristics," Applied Energy, Elsevier, vol. 197(C), pages 114-123.
    2. Şahin, Zehra & Aksu, Orhan N., 2015. "Experimental investigation of the effects of using low ratio n-butanol/diesel fuel blends on engine performance and exhaust emissions in a turbocharged DI diesel engine," Renewable Energy, Elsevier, vol. 77(C), pages 279-290.
    3. Chen, Zheng & Liu, Jingping & Han, Zhiyu & Du, Biao & Liu, Yun & Lee, Chiafon, 2013. "Study on performance and emissions of a passenger-car diesel engine fueled with butanol–diesel blends," Energy, Elsevier, vol. 55(C), pages 638-646.
    4. Hanzhengnan Yu & Xingyu Liang & Gequn Shu & Xu Wang & Yuesen Wang & Hongsheng Zhang, 2016. "Experimental Investigation on Wall Film Distribution of Dimethyl Ether/Diesel Blended Fuels Formed during Spray Wall Impingement," Energies, MDPI, vol. 9(11), pages 1-17, November.
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