کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
225072 464474 2009 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational fluid dynamics (CFD) modelling of local mean age of air distribution in forced-ventilation food plants
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Computational fluid dynamics (CFD) modelling of local mean age of air distribution in forced-ventilation food plants
چکیده انگلیسی

This paper reports the implementation of the “mean age of air” (MAA) concept into the computational fluid dynamics (CFD) code Fluent through user-defined functions to assess ventilation efficiency inside forced-ventilation food plants. Two transient methods and a steady-state method based on the resolution of an additional scalar transport equation were implemented and compared with experimental and numerical data obtained by Bartak et al. [Bartak, M., Cermak, M., Clarke, J.A., Denev, J., Drkal, F., Lain, M., Macdonald, I.A., Majer, M., Stankov, P., 2001. Experimental and numerical study of local mean age of air. In: Proceedings of the 7th International Building Performance Simulation Association (IBPSA) Conference, Rio de Janeiro, Brazil; Bartak, M., Beausoleil-Morrison, I., Clarke, J.A., Denev, J., Drkal, F., Lain, M., Macdonald, I.A., Melikov, A., Popiolek, Z., Stankov, P., 2002. Integrating CFD and building simulation. Building and Environment, 37, 865–871] for a 45 m3 test room. As the steady-state method led to the best compromise between accuracy of results and computation time, this method was then used to characterize ventilation efficiency inside a pilot cheese ripening room and two modern sausage dryers of large height. In light of the results presented, local MAA is a better and a more sensitive parameter than mean air velocity for highlighting areas with inadequate ventilation, and thus for assessing ventilation efficiency in industrial food plants.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 90, Issue 1, January 2009, Pages 90–103
نویسندگان
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