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Novel insights into the dynamic structure of biodiesel and conventional fuel sprays from high-pressure diesel injectors

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  • Moon, Seoksu

Abstract

The spray dynamics of biodiesel has not been thoroughly investigated in previous studies. Understanding the dynamic structure is important for successful modeling of biodiesel sprays and the proper use of biodiesel in modern engines. This study compares the dynamic structure of biodiesel and conventional fuel sprays from single- and multi-hole diesel injectors using a synchrotron X-ray velocimetry technique. Three fuels, biodiesel, diesel and Viscor16br, were used in this study. The results showed that the high viscosity and density of biodiesel decreased the injection velocity compared to conventional fuels. The biodiesel effect on injection velocity was less significant for the multi-hole injector. For the single-hole injector, the biodiesel slowed down the flow breakup and increased the intact core length that caused the lower velocity decay rate and turbulence intensity along the spray center. Meanwhile, in the case of the multi-hole injector, the flow breakup, and the velocity decay rate and turbulence intensity along the spray center appeared equivalent regardless of the fuel. The fuel viscosity did not play a dominant role in the spray dynamics of the multi-hole injector and the dynamic structure of the biodiesel and conventional fuel sprays can be scaled based on the momentum conserving gas jet theory.

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  • Moon, Seoksu, 2016. "Novel insights into the dynamic structure of biodiesel and conventional fuel sprays from high-pressure diesel injectors," Energy, Elsevier, vol. 115(P1), pages 615-625.
    • Handle: RePEc:eee:energy:v:115:y:2016:i:p1:p:615-625
    DOI: 10.1016/j.energy.2016.09.062
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    References listed on IDEAS

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    1. Kuti, Olawole Abiola & Nishida, Keiya & Zhu, Jingyu, 2013. "Experimental studies on spray and gas entrainment characteristics of biodiesel fuel: Implications of gas entrained and fuel oxygen content on soot formation," Energy, Elsevier, vol. 57(C), pages 434-442.
    2. Moon, Seoksu & Huang, Weidi & Li, Zhilong & Wang, Jin, 2016. "End-of-injection fuel dribble of multi-hole diesel injector: Comprehensive investigation of phenomenon and discussion on control strategy," Applied Energy, Elsevier, vol. 179(C), pages 7-16.
    3. Agarwal, Avinash Kumar & Som, Sibendu & Shukla, Pravesh Chandra & Goyal, Harsh & Longman, Douglas, 2015. "In-nozzle flow and spray characteristics for mineral diesel, Karanja, and Jatropha biodiesels," Applied Energy, Elsevier, vol. 156(C), pages 138-148.
    4. Valentino, Gerardo & Allocca, Luigi & Iannuzzi, Stefano & Montanaro, Alessandro, 2011. "Biodiesel/mineral diesel fuel mixtures: Spray evolution and engine performance and emissions characterization," Energy, Elsevier, vol. 36(6), pages 3924-3932.
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    Cited by:

    1. Weidi Huang & Huifeng Gong & Raditya Hendra Pratama & Seoksu Moon & Keiji Takagi & Zhili Chen, 2020. "Potential for Shock-Wave Generation at Diesel Engine Conditions and Its Influence on Spray Characteristics," Energies, MDPI, vol. 13(23), pages 1-19, December.
    2. Muteeb ul Haq & Ali Turab Jafry & Muhammad Salman Abbasi & Muhammad Jawad & Saad Ahmad & Taqi Ahmad Cheema & Naseem Abbas, 2022. "Numerical and Experimental Spray Analysis of Castor and Jatropha Biodiesel under Non-Evaporating Conditions," Energies, MDPI, vol. 15(20), pages 1-18, October.
    3. Qiu, Tao & Wang, Kaixin & Lei, Yan & Wu, Chenglin & Liu, Yuwei & Chen, Xinyu & Guo, Peng, 2018. "Investigation on effects of back pressure on submerged jet flow from short cylindrical orifice filled with diesel fuel," Energy, Elsevier, vol. 162(C), pages 964-976.

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