کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5011679 1462654 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of an efficient bifurcation tracking method
ترجمه فارسی عنوان
توسعه یک روش ردیابی روش کارآمد
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی


- Novel work on continuation methods for large systems.
- Bifurcation tracking for large RANS systems.
- Uses a projection method to reduce the computational cost of the problem.
- Presents computationally inexpensive direct bifurcation tracking methods.

The buffet onset boundary is associated with a change in stability of the flow solution. The buffet onset boundary has been computed for a NACA 0012 aerofoil using a modified bifurcation tracking method. The algorithm combines the projection aspect of the Recursive Projection Method with two different direct bifurcation tracking methods. This considerably reduces the cost of the bifurcation tracking methods by solving for the bifurcation point on a small subspace of the system containing only the least stable dynamics. The method has been extended to allow the boundary to be computed as geometrical parameters, camber and thickness, are changed. This enables rapid evaluation of the effect of different aerofoil designs on the boundary. Results are presented comparing the full bifurcation tracking methods to their projected equivalent and show that although the projected methods lack the numerical accuracy of the full counterpart, the trends of the boundaries agree well.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Fluids - Volume 157, 3 November 2017, Pages 28-42
نویسندگان
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