Heat Flux from Turbulent Premixed Flame to the Wall of a Constant Volume Vessel

Eiji Tomita, Yoshisuke Hamamoto, Hiroshi Sasaki

    Research output: Contribution to journalArticlepeer-review


    Instantaneous heat flux to the wall of a combustion chamber was measured by a co-axial thermocouple with a thin fin junction for the case with laminar and turbulent flame of a propane-air mixture. The experiment was performed in a constant volume vessel of the disk-type with swirl flow. When the laminar flame arrived at the wall, the heat flux had one sharp peak. In the case of the turbulent flame, however, the heat flux with multiple sharp peaks was observed. It is considered that this phenomenon corresponds to the structure of the turbulent flame. The maximum value of peak heat flux, qmax is approximately proportional to {k(Ti-Tu)/δL}0.61, where (Ti-Tu)/δL is a characteristic value of the temperature gradient in a preheat zone of laminar flame and k is the heat conductivity. The same relation is obtained, even when the flow velocity, equivalence ratio or measuring position are varied.

    Original languageEnglish
    Pages (from-to)1229-1233
    Number of pages5
    JournalTransactions of the Japan Society of Mechanical Engineers Series B
    Issue number512
    Publication statusPublished - 1989


    • Combustion
    • Heat Flux
    • Internal Combustion Engine
    • Laminar Flame
    • Turbulent Flame

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanical Engineering


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