Non-oberbeck-boussinesq effects in gaseous Rayleigh-Bénard convection.
نویسندگان
چکیده
Non-Oberbeck-Boussinesq (NOB) effects are measured experimentally and calculated theoretically for strongly turbulent Rayleigh-Bénard convection of ethane gas under pressure where the material properties strongly depend on the temperature. Relative to the Oberbeck-Boussinesq case we find a decrease of the central temperature as compared to the arithmetic mean of the top- and bottom-plate temperature and an increase of the Nusselt number. Both effects are of opposite sign and greater magnitude than those for NOB convection in liquids like water.
منابع مشابه
Heat transfer & large-scale dynamics in turbulent Rayleigh-Bénard convection
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ورودعنوان ژورنال:
- Physical review letters
دوره 98 5 شماره
صفحات -
تاریخ انتشار 2007