Optimal nose shaping for delayed boundary-layer separation and transition in axisymmetric flow

轴对称流中延迟边界层分离和过渡的最佳鼻部形状

• 批准号: ARC : DP0211479
• 负责人: Dr James Denier
• 金额: $ 18.5万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2002
• 资助国家: 澳大利亚
• 起止时间: 2002-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/optimal-nose-shaping-axisymmetric-flow/70594
• 关键词: Optimal; nose; shaping; delayed; boundary

Optimal nose shaping for delayed boundary-layer separation and transition in axisymmetric flow. The aim of this project is to design a smooth nose for a body of revolution placed in axisymmetric flow of a viscous fluid at high Reynolds number, such that the boundary layer on the body remains unseparated. This can always be done with a sufficiently long nose, but our objective here is to minimise the necessary nose length. Outer potential flows will be provided via ring sources. The potential flows will be used to determine inner boundary layer solutions. Transition-to-turbulence will be considered by undertaking 2D and 3D stability computations.

轴对称流动中延迟边界层分离和转捩的鼻形优化。本课题的目的是为处于高雷诺数粘性流体轴对称流动中的旋转体设计一个光滑的机头，使旋转体上的边界层保持不分离。只要鼻子足够长，就可以做到这一点，但我们的目标是尽量减少必要的鼻子长度。外部电位流将通过环形源提供。势流将用于确定内边界层解。过渡到湍流将通过进行二维和三维稳定性计算来考虑。