書誌事項
- タイトル別名
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- Numerical Study of High Speed Liquid Droplet Impingement Phenomena by Fluid/Material Coupled Numerical Method
- リュウタイ ・ ザイリョウレンセイスウチ カイセキ ニ ヨル コウソク エキテキ ショウトツ ゲンショウ ノ スウチテキ ケンキュウ
- Numerical study of droplet impingement phenomena by fluid/material coupled simulation
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抄録
Serious damages are possibly caused by high-speed Liquid Droplet Impingement (LDI) on the material surface. In particular, the wear by LDI in piping system of nuclear power plant is becoming great problem in recent years because of high aging operation. Therefore, it is important for the safety of piping systems in nuclear power plant to evaluate accurately effect of high speed LDI on the inner pipe wall. In this study, by using our in-house fluid/material two-way coupled numerical method which considers reflection and transmission on the fluid/material interface, high-speed LDI on material surface is simulated. The algorithm of two-way coupled method at fluid/material interface is applied as follows: fluid pressure on material surface and normal stress of vertical direction of material surface are obtained by considering reflection and transmission of pressure and stress waves based on acoustic impedance. Nonslip condition is adopted on fluid/material surface, where the vertical velocity has the values obtained by considering reflection and transmission and the tangential velocity of fluid has the same velocity of material which is calculated by material analysis. From the numerical results, it is shown that variation of impingement velocity has an effect of linear for maximum pressure and equivalent stress but variation of droplet diameter has little an effect of these values.
収録刊行物
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- 混相流
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混相流 30 (1), 65-74, 2016
日本混相流学会
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詳細情報 詳細情報について
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- CRID
- 1390001204437931008
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- NII論文ID
- 130005145084
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- NII書誌ID
- AN10088286
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- ISSN
- 18815790
- 09142843
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- NDL書誌ID
- 027219476
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可