کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6932292 | 867719 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determining the effective resolution of advection schemes. Part II: Numerical testing
ترجمه فارسی عنوان
تعیین حل موثر طرح های پیشگیری. قسمت دوم: آزمایش عددی
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کلمات کلیدی
وضوح موثر، روشهای متمایز محدود، مورد آزمون، تجزیه و تحلیل پراکندگی، هسته دینامیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
The tests are focused on the use of non-linear limiters for advection schemes. It is found that the effective resolution of such non-linear schemes is very dependent on the number of time steps. Initially, schemes with limiters introduce large errors. Therefore, their effective resolution is poor over a small number of time steps. As the number of time steps increases the error of non-linear schemes grows at a smaller rate than that of the linear schemes which improves their effective resolution considerably. The tests highlight that a scheme that produces large errors over one time step might not produce a large accumulated error over a number of time steps. The results show that, in terms of effective-resolution, there is little benefit in using higher than third-order numerical accuracy with traditional limiters. The use of weighted essentially non-oscillatory (WENO) schemes, or relaxed and quasi-monotonic limiters, which allow smooth extrema, can eliminate this reduction in effective resolution and enable higher than third-order accuracy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 278, 1 December 2014, Pages 497-508
Journal: Journal of Computational Physics - Volume 278, 1 December 2014, Pages 497-508
نویسندگان
James Kent, Christiane Jablonowski, Jared P. Whitehead, Richard B. Rood,