Thermal plumes above hot sources: characterization and capture efficiency
نویسندگان
چکیده
منابع مشابه
Experimental characterization of a plume of passive contaminant above a thermal source: capture efficiency of a fume extraction hood.
Industrial ventilation problems can be linked to the formation of thermal plumes that develop due to natural convection above various heat sources. These plumes, independent of the energy losses and thermal constraints caused, can also be the carrier of polluting products. This article describes an experimental study of the dynamic, thermal, and mass fields that develop from a hot rectangular (...
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Hot spots are anomalous areas of surface volcanism that cannot be directly associated with plate tectonic processes. The term hot spot is used rather loosely. It is often applied to any long-lived volcanic center that is not part of the global network of mid-ocean ridges and island arcs. The classic example is Hawaii. Anomalous regions of thick crust on ocean ridges are also considered to be ho...
متن کاملMantle Convection at Earth-like Vigor: Thermal Plumes Reconcile Hot–spot Observations
Hot–spots are anomalous regions of magmatism that cannot be directly associated with plate tectonic processes. They are widely regarded as the surface expression of hot, columnar plumes, upwelling from deep within Earth’s 2900–km thick mantle. Hot–spots have variable life–spans, magmatic productivity and fixity. This suggests that a wide– range of upwelling structures co–exist within Earth’s ma...
متن کاملExtraction of plumes in turbulent thermal convection.
We present a scheme to extract the velocity of buoyant structures in turbulent thermal convection from simultaneous local velocity and temperature measurements. Applying this scheme to measurements taken at positions within the convection cell where the buoyant structures are dominated by plumes, we obtain the temperature dependence of the plume velocity and understand our results using the equ...
متن کاملExperimental characterisation of a plume above rectangular thermal sources. Effect of aspect ratio
An experimental study of the thermal plume emerging above a number of plane rectangular heat sources of finite dimensions was performed with the aim of verifying the corresponding point source or linear source models and the evolutions of the dynamic and thermal fields in relation to the aspect ratio. The heat sources were assembled from four rectangular units 1.5 m in length and 0.25 m in widt...
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ژورنال
عنوان ژورنال: Mechanics & Industry
سال: 2016
ISSN: 2257-7777,2257-7750
DOI: 10.1051/meca/2016010