書誌事項
- タイトル別名
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- Uncertainty Quantification of Transonic Nozzle Flow by Polynomial Chaos Expansion
- タコウシキ カオス テンカイ オ モチイタ センオンソク ノズル ナガレ ノ フカクテイセイ カイセキ ノ ケンキュウ
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説明
This study investigates the performance of an intrusive polynomial chaos expansion (PCE) method in the uncertainty quantification (UQ) of CFD. Quasi one-dimensional flow of a transonic nozzle with an uncertainty in the exit-pressure condition is discussed. Two major numerical techniques in our intrusive PCE are Roe-variable transformation and the multi-element (ME) PCE for clear implementations and improved accuracies of the UQ code for the case with a discontinuity (shock wave). The Roe's flux difference splitting scheme for the augmented equations has a clear advantage in resolutions against a simpler scheme while the discontinuity in the stochastic space is not properly treated by the polynomial approximation. The ME-PCE has been shown quite effective to simulate a complex stochastic response. The results are compared with Monte Carlo simulations and the reliability of the developed method is verified.
収録刊行物
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- 日本航空宇宙学会論文集
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日本航空宇宙学会論文集 65 (4), 151-156, 2017
一般社団法人 日本航空宇宙学会
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詳細情報 詳細情報について
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- CRID
- 1390001204469561728
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- NII論文ID
- 130005906873
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- NII書誌ID
- AA11307372
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- ISSN
- 24323691
- 13446460
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- NDL書誌ID
- 028464163
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可