کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7053468 | 1457607 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Space and energy-based turbulent scale-resolving simulations of flow in a 5â¯Ãâ¯5 nuclear reactor core fuel assembly with a spacer grid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
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چکیده انگلیسی
The partially averaged Navier-Stokes turbulence model, which is a bridging model between the Reynolds averaged Navier-Stokes model and direct numerical simulation, is capable of directly resolving the turbulent scales of interest by filtering the Navier-Stokes equation using turbulent kinetic energy and dissipation based filters. In this study, comparison is made between the partially averaged Navier-Stokes and large eddy simulation models, with emphasis on the mean flow characteristics and spatio-temporal turbulent flow structures. The results show that the partially averaged Navier-Stokes modeling produces results comparable to those of large eddy simulation when the appropriate cut-off energy filter is chosen. The test case involves simulating flows in a 5â¯Ãâ¯5 fuel rod bundle configuration with a spacer grid at a Reynolds number of 14,000. The simulation results are compared with particle image velocimetry data obtained from the scientific literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 71, June 2018, Pages 420-441
Journal: International Journal of Heat and Fluid Flow - Volume 71, June 2018, Pages 420-441
نویسندگان
Giacomo Busco, Yassin A. Hassan,