Development of the multi-scale hybrid turbulence model for large-eddy simulation using unstructured grid
使用非结构化网格开发用于大涡模拟的多尺度混合湍流模型
基本信息
- 批准号:20560143
- 负责人:
- 金额:$ 2.91万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 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:
- 关键词:
项目摘要
Sub-grid scale turbulence model and numerical method for large-eddy simulation have been developed based on the unstructured finite volume method. By optimizing the blending factor and SGS turbulence model considering the length from the solid wall, the drag crisis phenomena, in which drag coefficient of the sphere drastically decreases at a specific Reynolds number, was successfully simulated, and the numerical method developed has been validated. In addition, the method has been verified by applying it to the rotating sphere cases and the negative Magnus effect predicted in past wind-tunnel measurements has been realized in LES. The physical mechanism of causing the negative Magnus effect and its discrepancy from the theory was explained and discussed.
基于非结构有限体积法,发展了亚网格尺度湍流模型和大涡模拟的数值方法。通过优化掺混因子和SGS湍流模型,成功地模拟了在特定雷诺数下球体阻力系数急剧下降的阻力危机现象,验证了所提出的数值方法的有效性。此外,该方法已通过将其应用到旋转球的情况下,并在过去的风洞测量预测的负马格纳斯效应已实现在LES验证。对负马格努斯效应产生的物理机制及其与理论的差异进行了解释和讨论。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Effect of Ambient Turbulence on the Drag Force of Particle at High Stokes Number
环境湍流对高斯托克斯数粒子阻力的影响
- DOI:
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:Masaya Mutoh;Takuji Nakashima;Makoto Tsubokura;Nobuyuki Oshima
- 通讯作者:Nobuyuki Oshima
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TSUBOKURA Makoto其他文献
Aerodynamic drag reduction of a simplified vehicle model by promoting flow separation using plasma actuator
通过使用等离子体致动器促进流动分离来减少简化车辆模型的气动阻力
- DOI:
10.1299/mel.19-00354 - 发表时间:
2019 - 期刊:
- 影响因子:0
- 作者:
SHIMIZU Keigo;NAKASHIMA Takuji;SEKIMOTO Satoshi;FUJII Kozo;HIRAOKA Takenori;NAKAMURA Yusuke;NOUZAWA Takahide;IKEDA Jun;TSUBOKURA Makoto - 通讯作者:
TSUBOKURA Makoto
A study on efficiency of semi-implicit, density-based solver for simulation of evaporating particle-laden flow
用于模拟蒸发颗粒流的半隐式、基于密度的求解器的效率研究
- DOI:
10.1299/mel.21-00136 - 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
CHO Younghwa;BALE Rahul;TSUBOKURA Makoto;OSHIMA Nobuyuki - 通讯作者:
OSHIMA Nobuyuki
TSUBOKURA Makoto的其他文献
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{{ truncateString('TSUBOKURA Makoto', 18)}}的其他基金
Verification Study toward the Strategic Drag Reduction Control of Practical Bluff Boies
实用钝体策略减阻控制验证研究
- 批准号:
23560179 - 财政年份:2011
- 资助金额:
$ 2.91万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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