書誌事項
- タイトル別名
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- Nunuerical Analysis of Natural Convection in a Cubic Cavity using CIP-FEM.
- CIP ユウゲン ヨウソホウ オ モチイタ リッポウタイ キャビティ ナイ シゼン タイリュウ カイセキ
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説明
In numurical fluid analysis, high accuracy and upwinding are necessary for the convection term of the Navier-stokes equation because this term is non-linear. In general, bilinear element is used in FEM (Finite Element Method) and the discretization by this method corresponds to the 2nd-order central difference. As a result, we can't obtain adequate accuracy for high Reynolds number flow. Although many upwind methods have been proposed, we use CIP (Cubic Interpolated Pseudo-particle)-FEM in the present work, and analyze natural convection in a cubic cavity. This problem has been analyzed by many investigators. However, it is difficulut to analyze this flow at high Rayleigh numbers Ra≥107 because numerical divergences and vibrations occur in the energy equation. We analyze natural convection at 103≤Ra≤108 and show that the present scheme analyze this flow stably and is effective by comparing with other numerical results.
収録刊行物
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- 日本機械学会論文集B編
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日本機械学会論文集B編 66 (650), 2513-2520, 2000
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001206184432128
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- NII論文ID
- 130004223994
- 110002392547
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 5534098
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- 本文言語コード
- ja
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