Asymptotic Analysis and Numerical Methods for Oscillatory Infinite Generalized Bessel Transforms with an Irregular Oscillator
Asymptotic Analysis and Numerical Methods for Oscillatory Infinite Generalized Bessel Transforms with an Irregular Oscillator
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不规则振荡器振荡无限广义贝塞尔变换的渐近分析和数值方法
DOI:
10.1007/s10915-020-01132-0
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发表时间:
2020-01
影响因子:
2.5
通讯作者:
Wang Hong
中科院分区:
文献类型:
--
作者:
Kang Hongchao;Wang Hong
In this work, we perform a complete asymptotic analysis and the construction of affordable quadrature rules for a class of oscillatory infinite Bessel transform with a general oscillator. Especially in the presence of critical points, e.g., endpoints, zeros and stationary points, we first derive a series of useful asymptotic expansions in inverse powers of the frequency parameter. The resulting asymptotic expansions clarify the largebehavior of the transform and provide powerful tools for designing quadrature rules and conducting error analysis. As a consequence, efficient and affordable new modified Filon-type methods for computing the transform numerically are proposed. Particularly, we carry out the rigorous error analysis and obtain asymptotic error estimates in inverse powers of. Numerical examples can confirm our analysis. The accuracy can be improved greatly by either adding more derivatives interpolation at endpoints or adding more interior nodes. Moreover, only using a small number of nodes and multiplicities, we can obtain the required accuracy level. For fixed number of nodes and multiplicities, the higher accuracy can be achieved with the larger values of.
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影响因子:
4
作者:
Ruyun Chen
通讯作者:
Ruyun Chen
影响因子:
2.9
作者:
Davies, PJ;Duncan, DB
通讯作者:
Duncan, DB
影响因子:
2
作者:
K. S. Kölbig;F. Schaeff
通讯作者:
K. S. Kölbig;F. Schaeff
DOI:
10.1016/j.amc.2018.09.066
发表时间:
2019-04
期刊:
Appl. Math. Comput.
影响因子:
--
作者:
Hongchao Kang
通讯作者:
Hongchao Kang
影响因子:
3.5
作者:
Y. Luke;J. Gillis
通讯作者:
Y. Luke;J. Gillis