Buoyancy-induced airflow in a side-heated structure consisting of a cubic box and vertical ducts

N. S. Buenconsejo, Tetsu Fujii, Shigeru Koyama

    Research output: Contribution to journalArticlepeer-review


    Buoyancy-induced airflow in a box with one wall heated, an unheated inlet duct connected to its floor, and an exit duct with one side heated connected to its ceiling is experimentally investigated. A flow rate prediction method based on buoyancy and flow resistance balance is proposed and experimentally validated. The flow pattern and thermal stratification in the box; the flow resistance characteristics for low Reynolds numbers; the relationship among buoyancy, flow resistance, and pressure defect; the chimney effect caused by the exit duct; and the heat transfer characteristics of the heated walls are clarified. The flow rate, thermal stratification, and flow enhancement due to the chimney effect are considerably dependent on the size of the gap of the exit duct.

    Original languageEnglish
    Pages (from-to)603-612
    Number of pages10
    JournalExperimental Thermal and Fluid Science
    Issue number6
    Publication statusPublished - Jan 1 1990

    All Science Journal Classification (ASJC) codes

    • Chemical Engineering(all)
    • Nuclear Energy and Engineering
    • Aerospace Engineering
    • Mechanical Engineering
    • Fluid Flow and Transfer Processes


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