WEKO3
アイテム
A recommended modification to the dynamic two-parameter mixed subgrid scale model for large eddy simulation of wall bounded turbulent flow
https://nitech.repo.nii.ac.jp/records/5015
https://nitech.repo.nii.ac.jp/records/50156a4729c0-e6c9-49bd-b81c-61a15ca40335
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文_fulltext (253.8 kB)
|
Copyright (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.The following article appeared in Physics of Fluids, 13(11), pp.3400- 3410 ; 2001 and may be found at http://link.aip.org/link/?phf/13/3400
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2012-11-06 | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | A recommended modification to the dynamic two-parameter mixed subgrid scale model for large eddy simulation of wall bounded turbulent flow | |||||||||||||||
| 言語 | en | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| 資源タイプ | ||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||
| 資源タイプ | journal article | |||||||||||||||
| 著者 |
森西, 洋平
× 森西, 洋平
× Vasilyev, Oleg V.
|
|||||||||||||||
| 著者別名 | ||||||||||||||||
| 姓名 | Morinishi, Yohei | |||||||||||||||
| 言語 | en | |||||||||||||||
| 姓名 | 森西, 洋平 | |||||||||||||||
| 言語 | ja | |||||||||||||||
| 姓名 | モリニシ, ヨウヘイ | |||||||||||||||
| 言語 | ja-Kana | |||||||||||||||
| 書誌情報 |
en : PHYSICS OF FLUIDS 巻 13, 号 11, p. 3400-3410, 発行日 2001-11 |
|||||||||||||||
| 出版者 | ||||||||||||||||
| 出版者 | American Institute of Physics | |||||||||||||||
| 言語 | en | |||||||||||||||
| ISSN | ||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||
| 収録物識別子 | 1070-6631 | |||||||||||||||
| item_10001_source_id_32 | ||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||
| 収録物識別子 | AA10986203 | |||||||||||||||
| 出版タイプ | ||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||
| item_10001_relation_34 | ||||||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||
| 関連識別子 | http://dx.doi.org/10.1063/1.1404396 | |||||||||||||||
| 関連名称 | 10.1063/1.1404396 | |||||||||||||||
| 内容記述 | ||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||
| 内容記述 | It is well known that the correlation between the Smagorinsky model and the subgrid scale stress is low, while the model based on the scale similarity assumption has considerably higher correlation. However, the scale similarity model by itself was found to be insufficiently dissipative. Therefore, the model is usually used together with the Smagorinsky model. Model coefficients are commonly computed using the two-parameter dynamic procedure. Nevertheless, the dynamic two-parameter mixed model still does not work well for wall bounded flows, since the model predicts a high value of the wall shear stress. In this study, we propose a modification to the two-parameter dynamic procedure for wall bounded flows, which removes that defect: the Smagorinsky parameter, CS, is computed exactly the same way as in the dynamic Smagorinsky model, then the other parameter, CL, is computed dynamically as CS is known. This ensures that the mixed model provides proper wall shear stress and mean velocity profile. Computational tests are done for turbulent channel flow where the Reynolds numbers based on the channel half-width and wall friction velocity are 395 and 1400. To remove the ambiguity regarding the accuracy of the finite difference scheme, we use high (up to 12th) order accurate fully conservative finite difference schemes in a staggered grid system. | |||||||||||||||
| 言語 | en | |||||||||||||||
