IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i23p9102-d990020.html
   My bibliography  Save this article

Experimental Investigations on Detonation Initiation Characteristics of a Liquid-Fueled Pulse Detonation Combustor at Different Inlet Air Temperatures

Author

Listed:
  • Wenhao Tan

    (School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China)

  • Longxi Zheng

    (School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China)

  • Jie Lu

    (School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China)

  • Lingyi Wang

    (School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China)

  • Daoen Zhou

    (School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China)

Abstract

The detonation initiation characteristics of a single tube liquid-fueled pulse detonation combustor (PDC) is investigated at different inlet air temperatures in this paper. The inner diameter of the PDC is 62 mm. Gasoline and air are used as fuel and oxidant, respectively. The inlet air temperature is 288–523 K and the operating frequency of the PDC is 10~30 Hz. The experimental results show that the deflagration to detonation transition (DDT) distance, detonation initiation time, DDT time and jet ignition time decrease with the increasing operating frequency at the same inlet temperature. When the inlet temperature is 288 K, the DDT distance is shortened from 860.5 mm to 787.7 mm as the operating frequency increases from 10 Hz to 30 Hz. The detonation initiation time, the jet ignition time and the DDT time are reduced from 10.01 ms, 7.66 ms and 2.35 ms to 6.55 ms, 4.99 ms and 1.56 ms, respectively. When the inlet air temperature increases, the atomization and evaporation of the gasoline is improved, which also leads to the decrease in the DDT distance, the detonation initiation time, the jet ignition time and the DDT time. For example, when the inlet air temperature increases from 288 K to 523 K at the frequency of 10 Hz, the DDT distance is shortened from 860.5 mm to 747.2 mm and the detonation initiation time, the jet ignition time and the DDT time is reduced to 5.867 ms, 2.51 ms and 1.11 ms, respectively. Additionally, the self-ignition caused by high inner wall temperature occurs when PDC is operating at high frequency under high inlet air temperature.

Suggested Citation

  • Wenhao Tan & Longxi Zheng & Jie Lu & Lingyi Wang & Daoen Zhou, 2022. "Experimental Investigations on Detonation Initiation Characteristics of a Liquid-Fueled Pulse Detonation Combustor at Different Inlet Air Temperatures," Energies, MDPI, vol. 15(23), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:9102-:d:990020
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/23/9102/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/23/9102/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Sun, Xuxu & Lu, Shouxiang, 2020. "Effect of obstacle thickness on the propagation mechanisms of a detonation wave," Energy, Elsevier, vol. 198(C).
    2. Sun, Xuxu & Lu, Shouxiang, 2020. "On the mechanisms of flame propagation in methane-air mixtures with concentration gradient," Energy, Elsevier, vol. 202(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Huadao Xing & Runze Yu & Guangan Xu & Xiaodong Li & Yanyu Qiu & Derong Wang & Bin Li & Lifeng Xie, 2022. "Theoretical and Experimental Investigation of Explosion Characteristics of Hydrogen Explosion in a Closed Vessel," Energies, MDPI, vol. 15(22), pages 1-14, November.
    2. Liu, Guilong & Wang, Jian & Zheng, Ligang & Pan, Rongkun & Lu, Chang & Wang, Yan & Zhao, Yongxian & Li, Yanjie, 2023. "Effect of hydrogen addition on explosion characteristics of premixed methane/air mixture under different equivalence ratio distributions," Energy, Elsevier, vol. 276(C).
    3. Xiangzhou Feng & Xiqiao Huang, 2022. "Influence of Variable Blocking Ratio on DDT Process," Energies, MDPI, vol. 15(20), pages 1-17, October.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:9102-:d:990020. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.