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Enhancement of applicability of high-efficiency random sampling method using control variates method and sensitivity coefficients
| Title: | Enhancement of applicability of high-efficiency random sampling method using control variates method and sensitivity coefficients |
| Authors: | Kida, Takumi Browse this author | | Chiba, Go Browse this author →KAKEN DB |
| Keywords: | Uncertainty quantification | | random sampling | | sensitivity | | control variates method |
| Issue Date: | Jul-2022 |
| Publisher: | Taylor & Francis |
| Journal Title: | Journal of nuclear science and technology |
| Volume: | 59 |
| Issue: | 7 |
| Start Page: | 866 |
| End Page: | 874 |
| Publisher DOI: | 10.1080/00223131.2021.2015473 |
| Abstract: | The CV-S method is a high-efficiency random sampling method to estimate statistical moments of random variables, and it uses an approximated target parameter which are linearly dependent on input as a mockup parameter. In order to enhance the applicability of the CV-S method, we propose to use a mockup parameter which is different from but similar to a target parameter and whose sensitivity coefficients are available. In the present work, nuclear fuel burnup problems are concerned, and standard deviation of k infinity and nuclide number densities at certain fuel burnup are estimated by the CV-S method. Through numerical tests, it is clearly demonstrated that even if sensitivity coefficients of non burnup-related parameters in a simple system like a fuel pin-cell are used as the mockup, the CV-S method has a potential to efficiently estimate statistical moments of burnup-related parameters in a complicated system like a fuel assembly. |
| Rights: | This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Nuclear Science and Technology on 22 Dec 2021, available online: http://www.tandfonline.com/10.1080/00223131.2021.2015473. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/87547 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 千葉 豪
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