کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4925712 1431407 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of mesh non-orthogonality on numerical simulation of buoyant jet flows
ترجمه فارسی عنوان
تأثیر غیر ارتقایی مش مشی بر شبیه سازی عددی جریان شناور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
In the present research, we discuss the influence of mesh non-orthogonality on numerical solution of a type of buoyant flow. Buoyant jet flows are simulated numerically with hexahedral and prismatic mesh elements in an open source Computational Fluid Dynamics (CFD) code called “OpenFOAM”. Buoyant jet instability obtained with the prismatic meshes may be overestimated compared to that obtained with the hexahedral meshes when non-orthogonal correction is not applied in the code. Although the non-orthogonal correction method can improve the instability generated by mesh non-orthogonality, it may increase computation time required to reach a convergent solution. Thus, we propose modified solvers that can reduce the influence of mesh non-orthogonality and reduce the computation time compared to the existing solvers in OpenFOAM. It is demonstrated that calculations for a buoyant jet with a large temperature difference are performed faster by the modified solver.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Engineering and Design - Volume 314, 1 April 2017, Pages 326-337
نویسندگان
, , , ,