کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4995251 1458702 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New design equations for turbulent forced convection heat transfer and pressure loss in pillow-plate channels
ترجمه فارسی عنوان
معادلات طراحی جدید برای انتقال حرارت و انتقال فشار اجباری آشفتگی در کانال های صفحه بالابر
کلمات کلیدی
مبدل حرارتی بالابر روش های طراحی، از دست دادن فشار، انتقال گرما،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In particular, design methods for pressure loss and heat transfer are proposed for turbulent forced convection in pillow-plate channels over a wide range of Reynolds numbers (1000≤Re≤8000), Prandtl numbers (1≤Pr≤150) and characteristic geometry parameters (e.g., welding spot arrangement, inflation height). For the determination of heat transfer coefficients, two different approaches are presented. The first approach is based on the method typically suggested in literature, whereby the well-known Dittus-Boelter type power law function (cf. [1]) for the Nusselt number is applied and fitted to numerical data largely obtained in Ref. [2]. The second approach is based on the characteristic flow pattern in pillow plates suggested in Ref. [2]. In this pattern, the initial complex flow is broken down into two simpler flows, which can then be modeled separately. For both methods, the relative deviations between the numerical data obtained in Ref. [2] and in this study are less than 15%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 120, October 2017, Pages 459-468
نویسندگان
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