The kinetic acceleration of deflagration-to-detonation transition (DDT) of acetylene/oxygen mixtures at lean conditions in a 1    mm 2 microchannel is investigated using ozone addition. Equivalence ratios and ozone concentration are varied to understand the thermal and kinetic impacts, respectively, on DDT transition. The addition of ozone is found to drastically reduce the DDT time and onset distance via kinetic enhancement. The results show that, with a small amount of ozone addition, the DDT time is reduced by up to 77.5%; whereas it only slightly increases the Chapman–Jouguet velocities by 6.7%. Moreover, the addition of 1% ozone extends the DDT limit from equivalence ratios of 0.3 to 0.2. Furthermore, it is observed that ozone addition has a much larger effect on DDT time than the increase of the equivalence ratio. The present results suggest that, for accelerating DDT, the kinetic effect via ozone addition is much greater than the thermal effect. By using the ozone dissociation chemistry with an acetylene kinetic model (HP-Mech), the kinetic effect of ozone on DDT acceleration is examined. The present finding provides new insight into controlling engine knocking and detonation transition in detonation engines.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Kinetic Enhancement of Microchannel Detonation Transition by Ozone Addition to Acetylene Mixtures


    Beteiligte:
    Sepulveda, Juan (Autor:in) / Rousso, Aric (Autor:in) / Ha, Henry (Autor:in) / Chen, Timothy (Autor:in) / Cheng, Vivian (Autor:in) / Kong, Wenjun (Autor:in) / Ju, Yiguang (Autor:in)

    Erschienen in:

    AIAA Journal ; 57 , 2 ; 476-481


    Erscheinungsdatum :

    2018-12-26


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Kinetic Enhancement of Microchannel Detonation Transition by Ozone Addition to Acetylene Mixtures

    Sepulveda, Juan / Rousso, Aric C. / Ha, Henry et al. | AIAA | 2019


    Kinetic Enhancement of Microchannel Detonation Transition by Ozone Addition to Acetylene Mixtures

    Sepulveda, Juan / Rousso, Aric C. / Ha, Henry et al. | TIBKAT | 2019



    OZONE AND PLASMA-ASSISTED DEFLAGRATION TO DETONATION TRANSITION OF DIMETHYL ETHER IN A MICROCHANNEL

    Vorenkamp, Madeline / Murakami, Yuki / Chen, Timothy Y. et al. | TIBKAT | 2021


    Ozone and Plasma-assisted Deflagration to Detonation Transition of Dimethyl Ether in a Microchannel

    Vorenkamp, Madeline / Murakami, Yuki / Chen, Timothy Y. et al. | AIAA | 2021