کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5017263 1466386 2017 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A comprehensive two-dimensional numerical study on unsteady conjugate heat transfer in magnetic refrigerator with Gd plates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A comprehensive two-dimensional numerical study on unsteady conjugate heat transfer in magnetic refrigerator with Gd plates
چکیده انگلیسی
In the present work, the comprehensive two-dimensional numerical model is constructed with ANSYS Fluent for the unsteady conjugate heat transfer of magnetic refrigerator with Gd plates. To express the reciprocating piston movements and magneto-caloric effect, etc., several user-defined functions are compiled. With current model, the reciprocating magnetic refrigerator in the literature is simulated under room temperature conditions and its refrigeration mechanism is analyzed. Besides, the effect of cycling period (τ) on maximal temperature span (ΔTmax) is numerically investigated and different channel widths (w) are adopted for the effects of heat transfer enhancement. Computation results indicate that current comprehensive model could match well with public experimental data and the ΔTmax is effectively improved with smaller w at the cost of substantial increase of pressure difference. Moreover, the ΔTmax generated by narrower channels varies convexly with the τ, and the peak ΔTmax increases with a decreasing w.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 79, July 2017, Pages 217-225
نویسندگان
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