Computational modeling of methane-air combustion cooled by a laminar ethylene glycol flow through a thin plate

Afshin Abrishamkar, Omid Joneydi Shariatzadeh, Aliakbar Joneidi Jafari, Saman Ahmadi Siahpoush

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    Abstract

    Heat transfer applications are seen in numerous cases in various industries. The heat transferred from a fluid media through the surfaces to another media is a frequent case observed in many apparatuses and equipment. Heat transfer is sometimes desired to heat up or cool down a media; however, sometimes it occurs undesirably. In a special case in which a reaction takes place (e.g. Combustion); computational fluid dynamics (CFD) facilitates the evaluation of chemical reaction and discharge composition assessment. This paper presents a simulation model of a chamber with two compartments in which methane combustion occurs in one and a cold ethylene glycol flows in the other. The combustion of methane in a rectangular chamber was investigated and modeled by ANSYS FLUENT®. The geometry of the system was symmetrically created in GAMBIT® prior to the modeling stage. Conducting an extensive study, the effect of velocity of combustive flow was evaluated to be greatly more than molar ratio of methane to oxygen against the rise of temperature after combustion. Moreover, utilizing the reciprocal calculations, the extent of temperature decrease in combustion flow was found to be 35% as a result of increasing the oxygen to methane ratio for 4.5 times. In the next part, the same method was applied for a corresponding countercurrent case when the comparative analyses were carried out for two corresponding cases. The results proposed that the case with concurrent pattern is more effective compared to its identical countercurrent case for 15%. Finally, the usage of ethylene glycol as the coolant was justified through accomplishment and results comparison of two corresponding cases.

    Original languageEnglish
    Title of host publication27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2014
    PublisherÅbo Academy University
    Volume2014-June
    ISBN (Electronic)9781634391344
    Publication statusPublished - 2014
    MoE publication typeA4 Article in a conference publication
    EventInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - Turku, Finland
    Duration: 15 Jun 201419 Jun 2014
    Conference number: 27

    Conference

    ConferenceInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
    Abbreviated titleECOS
    CountryFinland
    CityTurku
    Period15/06/201419/06/2014

    Keywords

    • Combustion
    • Cooling efficiency
    • Ethylene glycol
    • Heat transfer
    • Methane-oxygen mixture

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