Developments of the 3-D numerical model and the simplified model of the eruption cloud dynamics

喷发云动力学3D数值模型和简化模型的发展

• 批准号: 20710137
• 负责人: SUZUKI Yujiro
• 金额: $ 1.83万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20710137/
• 关键词: 火山噴火; 火山; 乱流混合; 数値計算; 大規模シミュレーション; 自然災害; 火山噴煙; 火山災害

During explosive volcanic eruptions, a mixture of volcanic ash and gases is ejected from the volcanic vent into the atmosphere. In this study, I have developed a 3-D numerical model of the eruption cloud dynamics and estimated the relationship between the explosive intensity and the column height and the column collapse condition. On the basis of the 3-D simulation results, I have suggested a simplified model which predicts the column height and the column collapse condition.

在火山爆发时，火山灰和气体的混合物从火山口喷射到大气中。在本研究中，我建立了喷发云动力学的三维数值模型，并估计了爆炸强度与柱高和柱坍塌条件的关系。在三维模拟结果的基础上，提出了一个简化的预测柱高和柱倒塌情况的模型。

项目成果

Spatial variation of efficiency of turbulent mixing in eruption columns

喷发柱中湍流混合效率的空间变化

• 发表时间: 2008
• 作者: Y.J. Suzuki;T. Koyaguchi
• 通讯作者: T. Koyaguchi

High-resolution 3-D numerical simulation of volcanic eruption clouds

火山喷发云的高分辨率 3D 数值模拟

• 发表时间: 2009
• 作者: 鈴木雄治郎;小屋口剛博;Yujiro Suzuki;Takehiro Koyaguchi;鈴木雄治郎;Alain Volentik;大場武;Yujiro Suzuki;Yujiro Suzuki;Yujiro Suzuki;Yujiro Suzuki;Takehiro Koyaguchi;Takehiro Koyaguchi
• 通讯作者: Takehiro Koyaguchi

「超ペタスケール・コンピューティング」第1.6節 火山噴煙の数値シミュレーション

《超千万亿次计算》第1.6节火山羽流的数值模拟

• 发表时间: 2009
• 作者: 小柳義夫;他;鈴木雄治郎;鈴木雄治郎
• 通讯作者: 鈴木雄治郎

The effect of intensity of turbulence in umbrella cloud on tephra dispersion during explosive volcanic eruptions : Experimentai and numerical approaches

火山爆发期间伞云湍流强度对火山灰分散的影响：实验和数值方法

• 发表时间: 2009
• 期刊: Journal of Volcanology and Geothermal Research 186
• 作者: 鈴木雄治郎;小屋口剛博;Yujiro Suzuki;Takehiro Koyaguchi
• 通讯作者: Takehiro Koyaguchi

3-D numerical simulations of eruption clouds : flow regimes at the column collapse condition

喷发云的 3-D 数值模拟：柱塌陷条件下的流态

• 发表时间: 2010
• 作者: Norimitsu Nakata;Takeshi Tsuji;Toshifumi Matsuoka;Y. J. Suzuki and T. Koyaguchi
• 通讯作者: Y. J. Suzuki and T. Koyaguchi