کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4993177 | 1457615 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
URANS prediction of flow fluctuations in rod bundle with split-type spacer grid
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The URANS predictions of velocity fluctuations have been improved by appropriately summing up fluctuations resolved by the basic URANS model and non-resolved fluctuations, which were modelled with the turbulence model. This treatment of turbulent fluctuations, which are directly measured in high-quality experiments, allows more detailed evaluation of various URANS turbulence models. It was found out that the best agreement is achieved when resolved and modelled fluctuations are assumed to be uncorrelated, which indicates that the large-scale structures in this particular flow are distinct in the spectral space from the rest of turbulence. Turbulent flow in the MATiS-H experiment was reproduced by numerous authors using different approaches and our results are among the most accurate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 64, April 2017, Pages 10-22
Journal: International Journal of Heat and Fluid Flow - Volume 64, April 2017, Pages 10-22
نویسندگان
Blaž Mikuž, Iztok Tiselj,