کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9703437 1463323 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evolution of complex singularities in Kida-Pelz and Taylor-Green inviscid flows
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Evolution of complex singularities in Kida-Pelz and Taylor-Green inviscid flows
چکیده انگلیسی
The analyticity strip method is used to trace complex singularities in direct numerical simulations of the Kida-Pelz and Taylor-Green flows, performed with up to 20483 collocation points. Oscillations found in the Kida-Pelz energy spectrum are attributed to interferences of complex singularities. A generalized least-square fit that separates out the oscillations from the measure of the width of the analyticity strip δ is introduced. Using the available resolution, δ is found to decay exponentially in time up to t=1.25. It is argued that resolutions in the range 163843-327683 (within reach of the Earth Simulator) are needed to really probe the Pelz singularity at t∼2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Dynamics Research - Volume 36, Issues 4–6, April–June 2005, Pages 239-248
نویسندگان
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