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DOI: 10.1615/ICHMT.2008.CHT.1090
10 pages

Mohamed Omri
Génie mécanique, Université de Sherbrooke, Sherbrooke, Canada

Nicolas Galanis
THERMAUS, Département de génie mécanique, Université de Sherbrooke, Sherbrooke J1K 2R1, Quèbec, Canada


Three dimensional mixed convection in an ice rink heated by eight radiant heaters has been simulated numerically using a k-ε Standard model associated to a wall function correction. This large building is modelled by considering or not the presence of radiant heaters and also by considering or not radiation between the internal surfaces. This gives a total of four scenarios. The flow was first considered isothermal and calculation have been carried out with several different grids (from 7×105 to 2.05×106 nodes) allowing especially to fix a uniform step in the length-wise direction. Results indicate the usefulness of the CFD technique as a powerful tool which provides a detailed description of the air flow, the temperature field and the turbulent quantities. The most important results of this work are:
-When isothermal case is considered, velocities are localised in the zone of stands, which represent the tenth of the total volume.
-The agreement between calculated values and some measured air temperatures is good. The results indicate that in a significant part of the ice rink the air is essentially stagnant and significant air velocities can only be found in the spectator zone and in the top region parallel to the ceiling. Also turbulent kinetic is localised in the same regions. This justifies the use of less complicated turbulent models, by different authors, in this kind of application.
- The use of radiant heating results in an important increasing of the temperature field within the ice rink. Compared to the case without heaters, temperature at some heights over the ice increases more than 5°C.

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