کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10704624 | 1022013 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new trigonometrically-fitting technique to construct a symmetric linear multi-step method for the numerical solution of an orbital problem
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
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چکیده انگلیسی
Some previous works show that the linear multi-step methods with the trigonometrically-fitting technique suffer from the numerical instability due to the parameters, so that these parameters must be converted into Taylor series. In this paper, we present a general way to construct the symmetric linear multi-step method for the approximate solution of orbital problem by using a new trigonometrically-fitting technique. By using the new technique, we can eliminate the parameter instability so that the Taylor series expansion is avoided and show that the new obtained method is P-stable. Comparing with the previous trigonometrically-fitting technique for the implicit eight-step method, new technique extends the interval of periodicity from H02â¼5 to infinity and cuts the error constant nearly off 28%. By using a new efficient algorithm, we can cut off about one-fifth CPU time, because the first-stage and the iterative calculation can be completely avoided. Numerical results from the application to the well-known periodic orbital problems show that the new improved eight-step method is better than the previous eight-step method in accuracy and efficiency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 11, Issue 2, November 2005, Pages 90-102
Journal: New Astronomy - Volume 11, Issue 2, November 2005, Pages 90-102
نویسندگان
Zhongcheng Wang,