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AN OVERLAPPING ADAPTIVE STEP-SIZE MULTI-DERIVATIVE HYBRID BLOCK METHOD FOR HIGHER ORDER INITIAL VALUE PROBLEMS | ||
| Computational Methods for Differential Equations | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 31 فروردین 1404 اصل مقاله (1.69 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22034/cmde.2025.63158.2817 | ||
| نویسندگان | ||
| Uthman Olamide Rufai* ؛ Precious Sibanda؛ Sicelo Goqo | ||
| School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Pietermaritzburg 3201, South Africa. | ||
| چکیده | ||
| The need for accurate solutions to mathematical models, particularly for linear and non-linear higher-order initial value problems, is essential across various scientific and engineering fields. Traditional methods often face challenges with stability and precision, especially in non-linear cases, prompting the development of advanced numerical techniques. This study introduces a two-step overlapping adaptive step-size multi-derivative hybrid block method to address these challenges in solving higher-order initial value problems. The method incorporates overlapping elements, using the second-to-last intra-step point from the previous step within each integration block to enhance accuracy. The method uses error estimation and selects an appropriate step-size, ensuring the desired accuracy without wasting computational resources or introducing unnecessary errors. The non-linear initial value problems are efficiently linearized using a modified-Picard iteration. Numerical examples are provided to demonstrate the efficiency and accuracy of the proposed method, and its performance is compared against a similar non-overlapping method as well as other methods reported in the literature. | ||
| کلیدواژه‌ها | ||
| Hybrid block method؛ Multi-derivative؛ Modified-Picard iteration؛ Overlapping؛ Adaptive step-size | ||
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آمار تعداد مشاهده مقاله: 246 تعداد دریافت فایل اصل مقاله: 167 |
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